Energy performance of buildings - Method for calculation of system energy requirements and system efficiencies - Part 4-2: Space heating generation systems, heat pump systems, Module M3-8-2, M8-8-2

This European Standard covers heat pumps for space heating, heat pump water heaters (HPWH) and heat pumps with combined space heating and domestic hot water production in alternate or simultaneous operation, where the same heat pump delivers the heat to cover the space heating and domestic hot water heat requirement.
The standard provides a calculation method under steady conditions that corresponds to one calculation step.
The results of this calculation are incorporated in larger building models and take in account the influence of the external conditions and building control that influence the energy requirements for heating supplied by the heat pump system.
The scope of this part is to standardize the:
-   required inputs;
-   calculation methods;
-   required outputs
Generation for space heating and domestic hot water production of the following heat pump systems, including control of:
-   electrically-driven vapour compression cycle (VCC) heat pumps;
-   combustion engine-driven vapour compression cycle heat pumps;
-   thermally-driven vapour absorption cycle (VAC) heat pumps,
using combinations of heat source and heat distribution listed in Table 1.
This standard does not cover sizing or inspection of heat pumps.
This standard deals with heat generators for heating or for combined domestic hot water and heating service. Generators for domestic hot water only are taken into account into module M8-8.
NOTE 1   Heat pumps for cooling systems are taken into account into module M4–8.
NOTE 2   Heat pumps for space heating using air (distribution) are taken into account in module M5–8.
Other generation systems such as boilers are covered in other sub modules of part M3-8.
This is the revision of EN 15316 4 2:2008. The revision covers the adaptation of the standard to hourly and monthly energy calculation.
Table 2 shows the relative position of this standard within the set of EPB standards in the context of the modular structure as set out in prEN ISO 52000 1.
NOTE 1   In prCEN ISO/TR 52000 2 the same table can be found, with, for each module, the numbers of the relevant EPB standards and accompanying technical reports that are published or in preparation.
NOTE 2   The modules represent EPB standards, although one EPB standard may cover more than one module and one module may be covered by more than one EPB standard, for instance a simplified and a detailed method
respectively. See also Clause 2 and Tables A.1 and B.1.

Energetische Bewertung von Gebäuden - Verfahren zur Berechnung der Energieanforderungen und Nutzungsgrade der Anlagen - Teil 4-5: Fernwärme und Fernkälte, Modul M3-8-5, M4-8-5, M8-8-5, M11-8-5

Diese Europäische Norm deckt Wärmepumpen für die Raumheizung, Wärmepumpenwarmwasserbereiter (HPWH) und Wärmepumpen für die kombinierte Nutzung zur Raumheizung und Trinkwassererwärmung im Alternativ  oder Simultanbetrieb, bei denen die zur Deckung des Bedarfs für die Raumheizung und die Trinkwassererwärmung erforderliche Wärme von ein und derselben Wärmepumpe geliefert wird, ab.
Diese Norm stellt ein Berechnungsverfahren für Beharrungsbedingungen zur Verfügung, das einem Berechnungsschritt entspricht.
Die Ergebnisse dieser Berechnung werden in größere Gebäudemodelle einbezogen und tragen dem Einfluss der äußeren Bedingungen und der Gebäudeleittechnik Rechnung, soweit diese Einfluss auf die Energieanforderungen des für Heizzwecke verwendeten Wärmepumpensystems haben.
Ziel des vorliegenden Teils ist die Normung der:
—   notwendigen Eingabedaten;
—   Berechnungsverfahren;
—   notwendigen Ausgabedaten.
Erzeugung für die Raumheizung und die Trinkwassererwärmung durch die folgenden Wärme-pumpensysteme, einschließlich Regelung von:
—   elektrisch angetriebenen Kompressions-Wärmepumpen (en: vapour compression cycle, VCC);
—   verbrennungsmotorisch angetriebenen Kompressions-Wärmepumpen;
—   thermisch angetriebenen Dampfabsorptions-Wärmepumpen (en: vapour absorption cycle, VAC),
mit den in Tabelle 1 aufgeführten Kombinationen von Wärmequelle und Wärmeverteilung

Performance énergétique des bâtiments - Méthode de calcul des besoins énergétiques et des rendements des systèmes - Partie 4-2 : Systèmes de génération de chauffage des locaux, systèmes de pompes à chaleur Module M3-8-2, M8-8-2

La présente Norme européenne traite des pompes à chaleur pour le chauffage des locaux, des systèmes de chauffage de l’eau par pompe à chaleur et des pompes à chaleur utilisées à la fois pour le chauffage des locaux et la production d’eau chaude sanitaire en fonctionnement alterné ou simultané, où une seule et même pompe à chaleur fournit la chaleur nécessaire pour assurer les besoins en énergie calorifique pour le chauffage des locaux et la production d’eau chaude sanitaire.
La norme fournit une méthode de calcul dans des conditions stables qui correspondent à un pas de calcul.
Les résultats de ce calcul sont intégrés à de plus grands modèles de bâtiment et tiennent compte de l’influence des conditions extérieures et de la régulation du bâtiment sur les besoins énergétiques pour le chauffage satisfaits par le système de chauffage par pompe à chaleur.
L’objet de cette partie est de normaliser :
-   les données d’entrée requises ;
-   les méthodes de calcul ;
-   les données de sortie requises.
La génération pour le chauffage des locaux et la production d’eau chaude sanitaire des systèmes de chauffage par pompe à chaleur suivants, régulation comprise :
-   pompes à chaleur à compression de vapeur (VCC) à moteur électrique ;
-   pompes à chaleur à compression de vapeur à moteur à combustion ;
-   pompes à chaleur à absorption de vapeur (VAC) entraînées thermiquement ;
à l’aide des combinaisons de source de chaleur et de vecteur de distribution de chaleur listées dans le Tableau 1.

Energijske lastnosti stavb - Metoda za izračun energijskih zahtev in učinkovitosti sistema - 4-2. del: Sistemi za pridobivanje toplote za ogrevanje, toplotne črpalke - Modula M3-8-2 in M8-8-2

Standard zajema toplotne črpalke za ogrevanje prostora, grelnike vode s toplotno črpalko (HPWH) in toplotne črpalke s kombinirano proizvodnjo gospodinjske tople vode in ogrevanjem prostora v izmeničnem ali hkratnem delovanju, kjer ista toplotna črpalka dovaja toploto in tako pokriva zahteve po ogrevanju prostora in gospodinjske tople vode.
Standard nudi računsko metodo pod stabilnimi pogoji, ki ustrezajo enemu koraku izračuna.
Rezultati tega izračuna so vdelani v modele večjih stavb in upoštevajo vpliv zunanjih pogojev in nadzor stavbe, ki vpliva na energijske zahteve za ogrevanje s pomočjo sistemov toplotnih črpalk.
Namen tega dela je standardizirati:
– zahtevane vhode;
– računske metode;
– zahtevane izhode
za izhode termoelektrarn, za ogrevanje prostora in gospodinjsko toplo vodo naslednjih sistemov toplotnih črpalk, vključno z nadzorom:
– toplotne črpalke s ciklusom stiskanja hlapov (VCC) z električnim pogonom;
– toplotne črpalke s ciklusom stiskanja hlapov s pomočjo motorja z notranjim izgorevanjem;
– toplotne črpalke s ciklusom absorpcije hlapov s pomočjo toplote
s kombinacijami toplotnih virov in razporeditve toplote, naštetimi v preglednici 1.
Ta standard ne zajema ugotavljanja velikosti ali nadzora toplotnih črpalk.
Ta standard se uporablja za generatorje toplote za ogrevanje ali za kombinirano storitev gospodinjske tople vode in ogrevanja. Generatorji za gospodinjsko toplo vodo so upoštevani samo v modulu M8-8.
OPOMBA 1 Generatorji toplotnih črpalk za sisteme za hlajenje so upoštevani v modulu M4-8.
OPOMBA 2 Generatorji toplotnih črpalk za ogrevanje prostora s pomočjo zraka (razporejanje) so upoštevani v modulu M5-8.
Drugi sistemi proizvodnje, kot so kotli, so zajeti v drugih podmodulih dela M3-8.
To je revizija standarda EN 15316-4-2:2008. Revizija zajema prilagajanje standarda urnim in mesečnim izračunom energije.

General Information

Status
Published
Publication Date
25-Apr-2017
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
26-Apr-2017
Completion Date
26-Apr-2017

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 15316-4-2:2018
01-maj-2018
1DGRPHãþD
SIST EN 15316-4-2:2008

(QHUJLMVNHODVWQRVWLVWDYE0HWRGD]DL]UDþXQHQHUJLMVNLK]DKWHYLQXþLQNRYLWRVWL

VLVWHPDGHO6LVWHPL]DSULGRELYDQMHWRSORWH]DRJUHYDQMHWRSORWQHþUSDONH

0RGXOD0LQ0

Energy performance of buildings - Method for calculation of system energy requirements

and system efficiencies - Part 4-2: Space heating generation systems, heat pump
systems, Module M3-8-2, M8-8-2
Energetische Bewertung von Gebäuden - Verfahren zur Berechnung der

Energieanforderungen und Nutzungsgrade der Anlagen - Teil 4-2: Wärmeerzeugung für

die Raumheizung, Wärmepumpensysteme, Modul M3-8-2, M8-8-2

Performance énergétique des bâtiments - Méthode de calcul des besoins énergétiques

et des rendements des systèmes - Partie 4-2 : Systèmes de génération de chauffage

des locaux, systèmes de pompes à chaleur Module M3-8-2, M8-8-2
Ta slovenski standard je istoveten z: EN 15316-4-2:2017
ICS:
27.080 7RSORWQHþUSDONH Heat pumps
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
SIST EN 15316-4-2:2018 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 15316-4-2:2018
---------------------- Page: 2 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2017
EUROPÄISCHE NORM
ICS 91.140.10 Supersedes EN 15316-4-2:2008
English Version
Energy performance of buildings - Method for calculation
of system energy requirements and system efficiencies -
Part 4-2: Space heating generation systems, heat pump
systems, Module M3-8-2, M8-8-2

Performance énergétique des bâtiments - Méthode de Energetische Bewertung von Gebäuden - Verfahren zur

calcul des besoins énergétiques et des rendements des Berechnung der Energieanforderungen und

systèmes - Partie 4-2 : Systèmes de génération de Nutzungsgrade der Anlagen - Teil 4-5: Fernwärme und

chauffage des locaux, systèmes de pompes à chaleur Fernkälte, Modul M3-8-5, M4-8-5, M8-8-5, M11-8-5

Module M3-8-2, M8-8-2
This European Standard was approved by CEN on 27 February 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.

This document consolidates EN 15316-4-2:2017 and the corrigendum EN 15316-4-2:2017/AC:2017.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATIO N
EUROPÄISCHES KOMITEE FÜR NORMUN G
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15316-4-2:2017 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 9

3 Terms and definitions ................................................................................................................................... 9

4 Symbols and abbreviations ...................................................................................................................... 13

4.1 Symbols ............................................................................................................................................................ 13

4.2 Subscripts ........................................................................................................................................................ 13

5 Description of the methods ...................................................................................................................... 14

5.1 General ............................................................................................................................................................. 14

5.2 Multiple heat generators ........................................................................................................................... 14

5.3 System boundary .......................................................................................................................................... 15

5.3.1 General ............................................................................................................................................................. 15

5.3.2 Physical factors taken into account: ...................................................................................................... 15

5.4 Schematisation of the heat pump for heating .................................................................................... 15

5.5 Energy input needed to meet the heat requirements for heat pumps system....................... 16

5.6 Auxiliary energy (W ) ................................................................................................................... 18

HW;gen;aux

5.7 Recoverable, recovered and unrecoverable heat losses ............................................................... 18

5.8 Calculation by zones .................................................................................................................................... 18

5.9 Combined heating and domestic hot water preparation ............................................................... 19

6 Generation with heat pump systems - Energy calculation (hourly, bin) – Method A .......... 19

6.1 Output data ..................................................................................................................................................... 19

6.2 Input data ........................................................................................................................................................ 20

6.3 Multiple heat generators ........................................................................................................................... 26

6.4 Calculation time steps ................................................................................................................................ 26

6.5 Flow chart ....................................................................................................................................................... 26

6.6 Energy requirements for space heating and DHW mode for the time step considered ..... 27

6.7 COP and energy used for heating, storage and domestic hot water .......................................... 28

6.8 Auxiliary energy (W ) ...................................................................................................................... 39

H;gen;aux

6.9 Energy used from the heat source.......................................................................................................... 39

6.10 Calculation of back-up heater .................................................................................................................. 40

6.11 Total losses and total recoverable heat losses of the generation subsystem......................... 40

7 Method B – Monthly and annual energy calculation method ....................................................... 43

7.1 Calculation time steps ................................................................................................................................ 43

7.2 Output data ..................................................................................................................................................... 43

7.3 Principle of the calculation method B................................................................................................... 43

7.4 Additional input Data ................................................................................................................................. 44

7.5 Construction of the bins – Step 1 ............................................................................................................ 47

7.6 Determination of energy requirement of the single bins – Step 2 ............................................. 50

7.7 Determination of thermal performance of the heat pump (step 3) ........................................... 52

7.8 Determination of back-up energy of the single bins (step 4) ....................................................... 53

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SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)

7.9 Calculation of auxiliary energy input (step 5).................................................................................... 53

7.10 Calculation of recoverable generation subsystem losses (step 6) ............................................. 53

7.11 Calculation of the energy from the heat source (step 7) ................................................................ 54

7.12 Calculation of the total driving energy input to cover the requirements (step 8) ................ 54

8 Quality control ............................................................................................................................................... 54

8.1 Hourly, bin or monthly method ............................................................................................................... 54

8.2 Main sources of errors ................................................................................................................................ 55

9 Compliance check ......................................................................................................................................... 55

Annex A (normative) Template for input data ................................................................................................ 56

A.1 Heat pump description data ..................................................................................................................... 56

A.2 System design data ....................................................................................................................................... 60

A.3 Operating conditions ................................................................................................................................... 62

Annex B (informative) Default values ................................................................................................................ 64

B.1 Heat pump description data ..................................................................................................................... 64

B.2 System design data ....................................................................................................................................... 68

B.3 - Operating conditions ................................................................................................................................ 70

Annex C (informative) Tables of COP and energy at full load .................................................................... 72

C.1 General ............................................................................................................................................................. 72

C.2 Air – Water electrically driven heat pumps ........................................................................................ 72

C.3 COP and energy for exhaust air/ water electrically driven heat pump .................................... 73

C.4 COP and energy for water or brine/ water electrically driven heat pump ............................. 74

C.5 Air/water combustion-engine driven heat pumps ........................................................................... 75

Annex D (normative) Adaptation of the COP to different conditions of temperature

conditions ........................................................................................................................................................ 77

D.1 Principle ........................................................................................................................................................... 77

D.2 Application to electrically-driven heat pump .................................................................................... 78

D.3 Application to thermally-driven heat pumps ..................................................................................... 78

D.4 Correction of COP with adaptation to the operational temperature spread .......................... 79

D.5 Tests results form EN 14825 .................................................................................................................... 83

D.6 Input data for the calculation of COP and capacity at operating conditions ........................... 83

Bibliography ................................................................................................................................................................. 85

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SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)
European foreword

This document (EN 15316-4-2:2017) has been prepared by Technical Committee CEN/TC 228 “Heating

systems and water based cooling systems in buildings”, the secretariat of which is held by DIN.

This document supersedes EN 15316-4-2:2008.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by October 2017, and conflicting national standards shall

be withdrawn at the latest by October 2017.

The revision keeps the main principles of the calculation unchanged but the structure of the document

was changed. Informative content was removed to the accompanying technical report CEN/TR 15316-

6-2. The provisions cover also other energy carriers than heat now. The values may be altered in a

national annex.

Calculation methods to determine energy source indicators like the renewable energy ratio have been

added.
The main changes compared to EN 15316-4-2:2008 are:

a) type of heat pumps are now limited to hot water production at the output of the condenser;

b) informative content was removed to the accompanying technical report CEN/TR 15316-6-2;

c) calculation for performance of the heat pumps at different conditions is based on interpolation

provisions;

d) input data for energy performance of the heat pumps are based on part load and/or full load

information;

e) Annex A contains a template for the data and parameters used in the standards and Annex B a set of

default values.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document includes the corrigendum EN 15316-4-2:2017/AC:2017 which corrects Table D.3.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
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SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)
Introduction

This European Standard is part of a series of standards aiming at international harmonization of the

methodology for the assessment of the energy performance of buildings, called “set of EPB standards”.

All EPB standards follow specific rules to ensure overall consistency, unambiguity and transparency.

All EPB standards provide a certain flexibility with regard to the methods, the required input data and

references to other EPB standards, by the introduction of a normative template in Annex A and Annex B

with informative default choices.

EPB standards deal with energy performance calculation and other related aspects (like system sizing)

to provide the building services considered in the EPBD.

CEN/TC 228 deals with heating systems in buildings. Subjects covered by CEN/TC 228 are:

— energy performance calculation for heating systems;
— inspection of heating systems;
— design of heating systems;
— installation and commissioning of heating systems.

This standard specifies to take into account the energy performance of heat pump systems used for

domestic or heating purpose.

For the correct use of this standard, Annex A is to be used to specify the choices with the required input

data. Default values are presented in Annex B. In case the standard is used in the context of national or

regional legal requirements, mandatory choices may be given at national or regional level for such

specific applications, in particular for the application within the context of EU Directives transposed

into national legal requirements. These choices can be made available as National Annex or as separate

(e.g. legal) document. It is expected, if the default values and choices in Annex A are not followed due to

national regulations, policy or traditions, that:

— either the national standardization body will consider the possibility to add or include a National

Annex in agreement with the template of Annex A.

— or the national or regional authorities will, in the building regulations, reference the standard and

prepare data sheets containing the national or regional choices and values, in agreement with the

template of Annex A.

This updated standard covers hourly, monthly, annual time-steps and temperatures classes (bin

method).
---------------------- Page: 7 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)
1 Scope

This European Standard covers heat pumps for space heating, heat pump water heaters (HPWH) and

heat pumps with combined space heating and domestic hot water production in alternate or

simultaneous operation, where the same heat pump delivers the heat to cover the space heating and

domestic hot water heat requirement.

The standard provides a calculation method under steady conditions that corresponds to one

calculation step.

The results of this calculation are incorporated in larger building models and take in account the

influence of the external conditions and building control that influence the energy requirements for

heating supplied by the heat pump system.
The scope of this part is to standardize the:
— required inputs;
— calculation methods;
— required outputs

Generation for space heating and domestic hot water production of the following heat pump systems,

including control of:
— electrically-driven vapour compression cycle (VCC) heat pumps;
— combustion engine-driven vapour compression cycle heat pumps;
— thermally-driven vapour absorption cycle (VAC) heat pumps,
using combinations of heat source and heat distribution listed in Table 1.
Table 1 — Heating sources and energy distribution
Source Distribution
Outdoor air
Exhaust-air Water
Indirect ground source with brine
Indirect ground source with water
Direct ground source (Direct expansion
(DX)
Surface water
Ground water
This standard does not cover sizing or inspection of heat pumps.

This standard deals with heat generators for heating or for combined domestic hot water and heating

service. Generators for domestic hot water only are taken into account into module M8-8.

NOTE 1 Heat pumps for cooling systems are taken into account into module M4–8.

NOTE 2 Heat pumps for space heating using air (distribution) are taken into account in module M5–8.

---------------------- Page: 8 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)

Other generation systems such as boilers are covered in other sub modules of part M3-8.

This is the revision of EN 15316-4-2:2008. The revision covers the adaptation of the standard to hourly

and monthly energy calculation.

Table 2 shows the relative position of this standard within the set of EPB standards in the context of the

modular structure as set out in EN ISO 52000-1.

NOTE 3 In CEN ISO/TR 52000-2 the same table can be found, with, for each module, the numbers of the

relevant EPB standards and accompanying technical reports that are published or in preparation.

NOTE 4 The modules represent EPB standards, although one EPB standard may cover more than one module

and one module may be covered by more than one EPB standard, for instance a simplified and a detailed method

respectively. See also Clause 2 and Tables A.1 and B.1.
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SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)

Table 2 — Position of this standard, within the modular structure of the set of EPB standards

Building
Overarching Technical Building Systems
(as such)
sub
M1 sub1 M2 sub1 M3 M4 M5 M6 M7 M8 M9 M10 M11
1 General 1 General 1 General 15316–1 15316–1
Common terms
and definitions; Building Energy
2 2 2 Needs 12831–3 ?
symbols, units and Needs
subscripts
(Free) Indoor
Maximum Load and
3 Applications 3 Conditions 3 12831–1 12831–3
Power
without Systems
Ways to Express Ways to Express Ways to Express
4 Energy 4 Energy 4 Energy 15316–1 15316–1
Performance Performance Performance
Building
Functions and Heat Transfer by Emission and
5 5 5 15316–2 15316–2
Building Transmission control
Boundaries
Building
Heat Transfer by
Occupancy and Distribution and
6 6 Infiltration and 6 15316–3 15316–3 15316–3
Operating control
Ventilation
Conditions
Aggregation of
Energy Services Internal 15316–5
7 7 7 Storage and control 15316–5
and Energy Heat Gains 15316–4-3
Carriers
Building
8 8 Solar Heat Gains 8 Generation
Partitioning
8–1 Combustion boilers 15316–4-1 15316–4-1
8–2 Heat pumps 15316–4-2 15316–4-2
Thermal solar 15316–
8–3 15316–4-3 15316–4-3
Photovoltaics 4-3
On-site 15316–
8–4 15316–4-4 15316–4-4
cogeneration 4-4
District heating and 15316–
8–5 15316–4-5 15316–4-5
cooling 4-5
Direct electrical
8–6 15316–4-6 15316–4-6
heater
15316–
8–7 Wind turbines
4-7
Radiant heating,
8–8 15316–4-8
stoves
Building Load dispatching
Calculated Energy
9 9 Dynamics 9 and operating
Performance
(thermal mass) conditions
Measured
Measured Energy Measured Energy
10 Energy 10 10 15378–3 15378–3
Performance Performance
Performance
11 Inspection 11 Inspection 11 Inspection 15378–1 15378–1
Ways to Express
12 12 – 12 BMS
Indoor Comfort
External
13 Environment
Conditions
Economic 1545
Calculation 9–1
NOTE The shaded modules are not applicable
Descriptions
Descriptions
Descriptions
Heating
Cooling
Ventilation
Humidification
Dehumidification
Domestic Hot
water
Lighting
Building
automation and
control
Electricity
production
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SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

EN 12309-4, Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding

70 kW - Part 4: Test methods

EN 12309-6, Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding

70 kW - Part 6: Calculation of seasonal performances

EN 15316-3, Energy performance of buildings - Method for calculation of system energy requirements and

system efficiencies - Part 3: Space distribution systems (DHW, heating and cooling), Module M3-6, M4-6,

M8-6

EN 15316-4-1, Heating systems in buildings - Method for calculation of system energy requirements and

system efficiencies - Part 4-1: Space heating generation systems, combustion systems (boilers)

EN 14511 (all parts), Air conditioners, liquid chilling packages and heat pumps with electrically driven

compressors for space heating and cooling

EN 14825, Air conditioners, liquid chilling packages and heat pumps, with electrically driven compressors,

for space heating and cooling - Testing and rating at part load conditions and calculation of seasonal

performance

EN 16147, Heat pumps with electrically driven compressors - Testing, performance rating and

requirements for marking of domestic hot water units

EN ISO 15927-6, Hygrothermal performance of buildings - Calculation and presentation of climatic data -

Part 6: Accumulated temperature differences (degree-days) (ISO 15927-6)

EN ISO 52000-1:2017, Energy performance of buildings - Overarching EPB assessment - Part 1: General

framework and procedures (ISO 52000-1:2017)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN ISO 7345:1995,

EN ISO 52000-1:2017 and the following definitions apply.
3.1
alternate operation

production of heat energy for the space heating and domestic hot water system by a heat generator

with combined service by switching the heat generator either to the domestic hot water operation or

the space heating operation
3.2
application rating conditions

mandatory rated conditions within the operating range of the unit that are published by the

manufacturer or supplier
3.3
auxiliary energy

electrical energy used by technical building systems for heating, cooling, ventilation and/or domestic

water to support energy transformation to satisfy energy needs
---------------------- Page: 11 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)

Note 1 to entry: This includes energy for fans, pumps, electronics, etc. Electrical energy input to a ventilation

system for air transport and heat recovery is not considered as auxiliary energy, but as energy use for ventilation.

Note 2 to entry: The driving energy input for electrically-driven heat pumps in the system boundary of the COP

and an electrical back-up heater is not entitled auxiliary energy.
3.4
back-up heater
heater to supply heat not covered by the heat pump system itself

Note 1 to entry: If the back-up heater is an electrical heater, the system is calculated according to this standard,

if it is external system, this standard gives the demand of missing heat not supplied by the heat pump as output

data.
3.5
bin hours
sum of all hours occurring at a given temperature for a specific location equal

Note 1 to entry: In EN 14825, the number is rounded to a whole number and is derived from representative

weather data over the 1982–1999 period.
---------------------- Page: 12 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)
3.6
bivalent temperature

lowest temperature at which the heat pump heating power and the building heat load are equal

Note 1 to entry: Below this point, the unit may still deliver capacity, but additional back up heating is necessary

to fulfill the full heating load.

Note 2 to entry: According to the definition bivalent temperature is not fixed at the heating load depends on

temperature and internal gains; but bivalent temperature is mainly consider a fixed by the control system to

operate additional back-up heater.
3.7
bin

statistical temperature class (sometimes a class interval) for the outdoor air temperature, with the class

limits expressed in a temperature unit
3.8
coefficient of performance COP
ratio of the heating capacity to the effective power input of the unit
3.9
combustion engine heat pump
compressed vapour heat pump driven by a combustion engine.
3.10
cut-out period
...

SLOVENSKI STANDARD
SIST EN 15316-4-2:2018
01-maj-2018
1DGRPHãþD
SIST EN 15316-4-2:2008

(QHUJLMVNHODVWQRVWLVWDYE0HWRGD]DL]UDþXQHQHUJLMVNLK]DKWHYLQXþLQNRYLWRVWL

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Energy performance of buildings - Method for calculation of system energy requirements

and system efficiencies - Part 4-2: Space heating generation systems, heat pump
systems, Module M3-8-2, M8-8-2
Energetische Bewertung von Gebäuden - Verfahren zur Berechnung der

Energieanforderungen und Nutzungsgrade der Anlagen - Teil 4-2: Wärmeerzeugung für

die Raumheizung, Wärmepumpensysteme, Modul M3-8-2, M8-8-2

Performance énergétique des bâtiments - Méthode de calcul des besoins énergétiques

et des rendements des systèmes - Partie 4-2 : Systèmes de génération de chauffage

des locaux, systèmes de pompes à chaleur Module M3-8-2, M8-8-2
Ta slovenski standard je istoveten z: EN 15316-4-2:2017
ICS:
27.080 7RSORWQHþUSDONH Heat pumps
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
SIST EN 15316-4-2:2018 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 15316-4-2:2018
---------------------- Page: 2 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2017
EUROPÄISCHE NORM
ICS 91.140.10 Supersedes EN 15316-4-2:2008
English Version
Energy performance of buildings - Method for calculation
of system energy requirements and system efficiencies -
Part 4-2: Space heating generation systems, heat pump
systems, Module M3-8-2, M8-8-2

Performance énergétique des bâtiments - Méthode de Energetische Bewertung von Gebäuden - Verfahren zur

calcul des besoins énergétiques et des rendements des Berechnung der Energieanforderungen und

systèmes - Partie 4-2 : Systèmes de génération de Nutzungsgrade der Anlagen - Teil 4-2:

chauffage des locaux, systèmes de pompes à chaleur Wärmeerzeugung für die Raumheizung,

Module M3-8-2, M8-8-2 Wärmepumpensysteme, Modul M3-8-2, M8-8-2
This European Standard was approved by CEN on 27 February 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15316-4-2:2017 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 9

3 Terms and definitions ................................................................................................................................... 9

4 Symbols and abbreviations ...................................................................................................................... 13

4.1 Symbols ............................................................................................................................................................ 13

4.2 Subscripts ........................................................................................................................................................ 13

5 Description of the methods ...................................................................................................................... 14

5.1 General ............................................................................................................................................................. 14

5.2 Multiple heat generators ........................................................................................................................... 14

5.3 System boundary .......................................................................................................................................... 15

5.3.1 General ............................................................................................................................................................. 15

5.3.2 Physical factors taken into account: ...................................................................................................... 15

5.4 Schematisation of the heat pump for heating .................................................................................... 15

5.5 Energy input needed to meet the heat requirements for heat pumps system....................... 16

5.6 Auxiliary energy (W ) ................................................................................................................... 18

HW;gen;aux

5.7 Recoverable, recovered and unrecoverable heat losses ............................................................... 18

5.8 Calculation by zones .................................................................................................................................... 18

5.9 Combined heating and domestic hot water preparation ............................................................... 19

6 Generation with heat pump systems - Energy calculation (hourly, bin) – Method A .......... 19

6.1 Output data ..................................................................................................................................................... 19

6.2 Input data ........................................................................................................................................................ 20

6.3 Multiple heat generators ........................................................................................................................... 26

6.4 Calculation time steps ................................................................................................................................ 26

6.5 Flow chart ....................................................................................................................................................... 26

6.6 Energy requirements for space heating and DHW mode for the time step considered ..... 27

6.7 COP and energy used for heating, storage and domestic hot water .......................................... 28

6.8 Auxiliary energy (W ) ...................................................................................................................... 39

H;gen;aux

6.9 Energy used from the heat source.......................................................................................................... 39

6.10 Calculation of back-up heater .................................................................................................................. 40

6.11 Total losses and total recoverable heat losses of the generation subsystem......................... 40

7 Method B – Monthly and annual energy calculation method ....................................................... 43

7.1 Calculation time steps ................................................................................................................................ 43

7.2 Output data ..................................................................................................................................................... 43

7.3 Principle of the calculation method B................................................................................................... 43

7.4 Additional input Data ................................................................................................................................. 44

7.5 Construction of the bins – Step 1 ............................................................................................................ 46

7.6 Determination of energy requirement of the single bins – Step 2 ............................................. 50

7.7 Determination of thermal performance of the heat pump (step 3) ........................................... 52

7.8 Determination of back-up energy of the single bins (step 4) ....................................................... 53

7.9 Calculation of auxiliary energy input (step 5) ................................................................................... 53

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SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)

7.10 Calculation of recoverable generation subsystem losses (step 6) ............................................. 53

7.11 Calculation of the energy from the heat source (step 7) ................................................................ 54

7.12 Calculation of the total driving energy input to cover the requirements (step 8) ................ 54

8 Quality control ............................................................................................................................................... 54

8.1 Hourly, bin or monthly method ............................................................................................................... 54

8.2 Main sources of errors ................................................................................................................................ 55

9 Compliance check ......................................................................................................................................... 55

Annex A (normative) Template for input data ................................................................................................ 56

A.1 Heat pump description data ..................................................................................................................... 56

A.2 System design data ....................................................................................................................................... 60

A.3 Operating conditions ................................................................................................................................... 62

Annex B (informative) Default values ................................................................................................................ 64

B.1 Heat pump description data ..................................................................................................................... 64

B.2 System design data ....................................................................................................................................... 68

B.3 - Operating conditions ................................................................................................................................ 70

Annex C (informative) Tables of COP and energy at full load .................................................................... 72

C.1 General ............................................................................................................................................................. 72

C.2 Air – Water electrically driven heat pumps ........................................................................................ 72

C.3 COP and energy for exhaust air/ water electrically driven heat pump .................................... 73

C.4 COP and energy for water or brine/ water electrically driven heat pump ............................. 74

C.5 Air/water combustion-engine driven heat pumps ........................................................................... 75

Annex D (normative) Adaptation of the COP to different conditions of temperature

conditions ........................................................................................................................................................ 77

D.1 Principle ........................................................................................................................................................... 77

D.2 Application to electrically-driven heat pump .................................................................................... 78

D.3 Application to thermally-driven heat pumps ..................................................................................... 78

D.4 Correction of COP with adaptation to the operational temperature spread .......................... 79

D.5 Tests results form EN 14825 .................................................................................................................... 82

D.6 Input data for the calculation of COP and capacity at operating conditions ........................... 82

Bibliography ................................................................................................................................................................. 84

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SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)
European foreword

This document (EN 15316-4-2:2017) has been prepared by Technical Committee CEN/TC 228 “Heating

systems and water based cooling systems in buildings”, the secretariat of which is held by DIN.

This document supersedes EN 15316-4-2:2008.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by October 2017, and conflicting national standards shall

be withdrawn at the latest by October 2017.

The revision keeps the main principles of the calculation unchanged but the structure of the document

was changed. Informative content was removed to the accompanying technical report CEN/TR 15316-

6-2. The provisions cover also other energy carriers than heat now. The values may be altered in a

national annex.

Calculation methods to determine energy source indicators like the renewable energy ratio have been

added.
The main changes compared to EN 15316-4-2:2008 are:

a) type of heat pumps are now limited to hot water production at the output of the condenser;

b) informative content was removed to the accompanying technical report CEN/TR 15316-6-2;

c) calculation for performance of the heat pumps at different conditions is based on interpolation

provisions;

d) input data for energy performance of the heat pumps are based on part load and/or full load

information;

e) Annex A contains a template for the data and parameters used in the standards and Annex B a set of

default values.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
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SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)
Introduction

This European Standard is part of a series of standards aiming at international harmonization of the

methodology for the assessment of the energy performance of buildings, called “set of EPB standards”.

All EPB standards follow specific rules to ensure overall consistency, unambiguity and transparency.

All EPB standards provide a certain flexibility with regard to the methods, the required input data and

references to other EPB standards, by the introduction of a normative template in Annex A and Annex B

with informative default choices.

EPB standards deal with energy performance calculation and other related aspects (like system sizing)

to provide the building services considered in the EPBD.

CEN/TC 228 deals with heating systems in buildings. Subjects covered by CEN/TC 228 are:

— energy performance calculation for heating systems;
— inspection of heating systems;
— design of heating systems;
— installation and commissioning of heating systems.

This standard specifies to take into account the energy performance of heat pump systems used for

domestic or heating purpose.

For the correct use of this standard, Annex A is to be used to specify the choices with the required input

data. Default values are presented in Annex B. In case the standard is used in the context of national or

regional legal requirements, mandatory choices may be given at national or regional level for such

specific applications, in particular for the application within the context of EU Directives transposed

into national legal requirements. These choices can be made available as National Annex or as separate

(e.g. legal) document. It is expected, if the default values and choices in Annex A are not followed due to

national regulations, policy or traditions, that:

— either the national standardization body will consider the possibility to add or include a National

Annex in agreement with the template of Annex A.

— or the national or regional authorities will, in the building regulations, reference the standard and

prepare data sheets containing the national or regional choices and values, in agreement with the

template of Annex A.

This updated standard covers hourly, monthly, annual time-steps and temperatures classes (bin

method).
---------------------- Page: 7 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)
1 Scope

This European Standard covers heat pumps for space heating, heat pump water heaters (HPWH) and

heat pumps with combined space heating and domestic hot water production in alternate or

simultaneous operation, where the same heat pump delivers the heat to cover the space heating and

domestic hot water heat requirement.

The standard provides a calculation method under steady conditions that corresponds to one

calculation step.

The results of this calculation are incorporated in larger building models and take in account the

influence of the external conditions and building control that influence the energy requirements for

heating supplied by the heat pump system.
The scope of this part is to standardize the:
— required inputs;
— calculation methods;
— required outputs

Generation for space heating and domestic hot water production of the following heat pump systems,

including control of:
— electrically-driven vapour compression cycle (VCC) heat pumps;
— combustion engine-driven vapour compression cycle heat pumps;
— thermally-driven vapour absorption cycle (VAC) heat pumps,
using combinations of heat source and heat distribution listed in Table 1.
Table 1 — Heating sources and energy distribution
Source Distribution
Outdoor air
Exhaust-air Water
Indirect ground source with brine
Indirect ground source with water
Direct ground source (Direct expansion
(DX)
Surface water
Ground water
This standard does not cover sizing or inspection of heat pumps.

This standard deals with heat generators for heating or for combined domestic hot water and heating

service. Generators for domestic hot water only are taken into account into module M8-8.

NOTE 1 Heat pumps for cooling systems are taken into account into module M4–8.

NOTE 2 Heat pumps for space heating using air (distribution) are taken into account in module M5–8.

---------------------- Page: 8 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)

Other generation systems such as boilers are covered in other sub modules of part M3-8.

This is the revision of EN 15316-4-2:2008. The revision covers the adaptation of the standard to hourly

and monthly energy calculation.

Table 2 shows the relative position of this standard within the set of EPB standards in the context of the

modular structure as set out in EN ISO 52000-1.

NOTE 3 In CEN ISO/TR 52000-2 the same table can be found, with, for each module, the numbers of the

relevant EPB standards and accompanying technical reports that are published or in preparation.

NOTE 4 The modules represent EPB standards, although one EPB standard may cover more than one module

and one module may be covered by more than one EPB standard, for instance a simplified and a detailed method

respectively. See also Clause 2 and Tables A.1 and B.1.
---------------------- Page: 9 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)

Table 2 — Position of this standard, within the modular structure of the set of EPB standards

Building
Overarching Technical Building Systems
(as such)
sub
M1 sub1 M2 sub1 M3 M4 M5 M6 M7 M8 M9 M10 M11
1 General 1 General 1 General 15316–1 15316–1
Common terms
and definitions; Building Energy
2 2 2 Needs 12831–3 ?
symbols, units and Needs
subscripts
(Free) Indoor
Maximum Load and
3 Applications 3 Conditions 3 12831–1 12831–3
Power
without Systems
Ways to Express Ways to Express Ways to Express
4 Energy 4 Energy 4 Energy 15316–1 15316–1
Performance Performance Performance
Building
Functions and Heat Transfer by Emission and
5 5 5 15316–2 15316–2
Building Transmission control
Boundaries
Building
Heat Transfer by
Occupancy and Distribution and
6 6 Infiltration and 6 15316–3 15316–3 15316–3
Operating control
Ventilation
Conditions
Aggregation of
Energy Services Internal 15316–5
7 7 7 Storage and control 15316–5
and Energy Heat Gains 15316–4-3
Carriers
Building
8 8 Solar Heat Gains 8 Generation
Partitioning
8–1 Combustion boilers 15316–4-1 15316–4-1
8–2 Heat pumps 15316–4-2 15316–4-2
Thermal solar 15316–
8–3 15316–4-3 15316–4-3
Photovoltaics 4-3
On-site 15316–
8–4 15316–4-4 15316–4-4
cogeneration 4-4
District heating and 15316–
8–5 15316–4-5 15316–4-5
cooling 4-5
Direct electrical
8–6 15316–4-6 15316–4-6
heater
15316–
8–7 Wind turbines
4-7
Radiant heating,
8–8 15316–4-8
stoves
Building Load dispatching
Calculated Energy
9 9 Dynamics 9 and operating
Performance
(thermal mass) conditions
Measured
Measured Energy Measured Energy
10 Energy 10 10 15378–3 15378–3
Performance Performance
Performance
11 Inspection 11 Inspection 11 Inspection 15378–1 15378–1
Ways to Express
12 12 – 12 BMS
Indoor Comfort
External
13 Environment
Conditions
Economic 1545
Calculation 9–1
NOTE The shaded modules are not applicable
Descriptions
Descriptions
Descriptions
Heating
Cooling
Ventilation
Humidification
Dehumidification
Domestic Hot
water
Lighting
Building
automation and
control
Electricity
production
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SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

EN 12309-4, Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding

70 kW - Part 4: Test methods

EN 12309-6, Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding

70 kW - Part 6: Calculation of seasonal performances

EN 15316-3, Energy performance of buildings - Method for calculation of system energy requirements and

system efficiencies - Part 3: Space distribution systems (DHW, heating and cooling), Module M3-6, M4-6,

M8-6

EN 15316-4-1, Heating systems in buildings - Method for calculation of system energy requirements and

system efficiencies - Part 4-1: Space heating generation systems, combustion systems (boilers)

EN 14511 (all parts), Air conditioners, liquid chilling packages and heat pumps with electrically driven

compressors for space heating and cooling

EN 14825, Air conditioners, liquid chilling packages and heat pumps, with electrically driven compressors,

for space heating and cooling - Testing and rating at part load conditions and calculation of seasonal

performance

EN 16147, Heat pumps with electrically driven compressors - Testing, performance rating and

requirements for marking of domestic hot water units

EN ISO 15927-6, Hygrothermal performance of buildings - Calculation and presentation of climatic data -

Part 6: Accumulated temperature differences (degree-days) (ISO 15927-6)

EN ISO 52000-1:2017, Energy performance of buildings - Overarching EPB assessment - Part 1: General

framework and procedures (ISO 52000-1:2017)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN ISO 7345:1995,

EN ISO 52000-1:2017 and the following definitions apply.
3.1
alternate operation

production of heat energy for the space heating and domestic hot water system by a heat generator

with combined service by switching the heat generator either to the domestic hot water operation or

the space heating operation
3.2
application rating conditions

mandatory rated conditions within the operating range of the unit that are published by the

manufacturer or supplier
3.3
auxiliary energy

electrical energy used by technical building systems for heating, cooling, ventilation and/or domestic

water to support energy transformation to satisfy energy needs
---------------------- Page: 11 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)

Note 1 to entry: This includes energy for fans, pumps, electronics, etc. Electrical energy input to a ventilation

system for air transport and heat recovery is not considered as auxiliary energy, but as energy use for ventilation.

Note 2 to entry: The driving energy input for electrically-driven heat pumps in the system boundary of the COP

and an electrical back-up heater is not entitled auxiliary energy.
3.4
back-up heater
heater to supply heat not covered by the heat pump system itself

Note 1 to entry: If the back-up heater is an electrical heater, the system is calculated according to this standard,

if it is external system, this standard gives the demand of missing heat not supplied by the heat pump as output

data.
3.5
bin hours
sum of all hours occurring at a given temperature for a specific location equal

Note 1 to entry: In EN 14825, the number is rounded to a whole number and is derived from representative

weather data over the 1982–1999 period.
---------------------- Page: 12 ----------------------
SIST EN 15316-4-2:2018
EN 15316-4-2:2017 (E)
3.6
bivalent temperature

lowest temperature at which the heat pump heating power and the building heat load are equal

Note 1 to entry: Below this point, the unit may still deliver capacity, but additional back up heating is necessary

to fulfill the full heating load.

Note 2 to entry: According to the definition bivalent temperature is not fixed at the heating load depends on

temperature and internal gains; but bivalent temperature is mainly consider a fixed by the control system to

operate additional back-up heater.
3.7
bin

statistical temperature class (sometimes a class interval) for the outdoor air temperature, with the class

limits expressed in a temperature unit
3.8
coefficient of performance COP
ratio of the heating capacity to the effective power input of the unit
3.9
combustion engine heat pump
compressed vapour heat pump driven by a combustion engine.
3.10
cut-out period

time period in which the electricity supply to the heat pump is interrupt by the supplying utility

3.11
effective power input
average power input of the unit within the defined int
...

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