Energy performance of buildings - Ventilation for buildings - Part 15: Calculation of cooling systems (Module M4-7) - Storage

This standard covers energy performance calculation of storage systems used for ventilation systems.
This standard does not cover sizing or inspection of such storage systems.
Table 1 shows the relative position of this standard within the EN EPB package of standards.

Energetische Bewertung von Gebäuden - Lüftung von Gebäuden - Teil 15: Berechnung von Kühlsystemen (Modul M4-7) - Speicherung

Diese Norm deckt die Berechnung der Gesamtenergieeffizienz von für Lüftungsanlagen genutzten Speichersystemen ab.
Die vorliegende Norm behandelt nicht die Bemessung oder Inspektion derartiger Speichersysteme.
Tabelle 1 zeigt die relative Position dieser Norm innerhalb des EPBD-Normenpakets.

Performance énergétique des bâtiments - Ventilation des bâtiments - Partie 15 : Calcul des systèmes de refroidissement (Module M4-7) - Stockage

La présente norme traite du calcul de la performance énergétique des systèmes de stockage utilisés pour les systèmes de ventilation.
La présente norme ne couvre pas le dimensionnement ou l'inspection de ces systèmes de stockage.
Le Tableau 1 présente la position relative de la présente norme par rapport à l'ensemble de normes EN DPEB.

Energijske lastnosti stavb - Prezračevanje stavb - 15. del: Izračun za hladilne sisteme - Modul M4-7 - Shranjevanje

Ta standard zajema izračun energetske učinkovitosti sistemov shranjevanja, ki se uporabljajo pri prezračevalnih sistemih. Ta standard ne zajema ugotavljanja velikosti ali nadzora teh sistemov shranjevanja. Preglednica 1 prikazuje relativen položaj tega standarda v sklopu standardov EN EPB.

General Information

Status
Published
Public Enquiry End Date
01-Mar-2015
Publication Date
13-Jun-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
12-Dec-2017
Due Date
16-Feb-2018
Completion Date
14-Jun-2018

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Energetische Bewertung von Gebäuden - Lüftung von Gebäuden - Teil 15: Berechnung von Kühlsystemen (Modul M4-7) - SpeicherungPerformance énergétique des bâtiments - Ventilation des bâtiments - Partie 15 : Calcul des systèmes de refroidissement (Module M4-7) - StockageEnergy performance of buildings - Ventilation for buildings - Part 15: Calculation of cooling systems (Module M4-7) - Storage91.140.30VLVWHPLVentilation and air-conditioning systemsICS:Ta slovenski standard je istoveten z:EN 16798-15:2017SIST EN 16798-15:2018en,fr,de01-julij-2018SIST EN 16798-15:2018SLOVENSKI

STANDARD
SIST EN 16798-15:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16798-15
June
t r s y ICS
{ sä s t rä s râ
{ sä s v rä u r English Version

Energy performance of buildings æ Ventilation for buildings Storage Performance énergétique des bâtiments æ Ventilation des bâtiments æ Partie

s w ã Calcul des systèmes de
Energieeffizienz von Gebäuden æ Teil

s wã Modul M væ y æ Berechnungsmethoden für den Energiebedarf von Kälteanlagen æ Speicherung This European Standard was approved by CEN on

t y February
t r s yä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels

t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s x y { zæ s wã t r s y ESIST EN 16798-15:2018
EN 16798-15:2017 (E) 2 Contents

Page European foreword ....................................................................................................................................................... 4 Introduction .................................................................................................................................................................... 7 1 Scope .................................................................................................................................................................... 9 2 Normative references ................................................................................................................................. 11 3 Terms and definitions ................................................................................................................................ 11 4 Symbols and subscripts ............................................................................................................................. 11 4.1 Symbols ............................................................................................................................................................ 11 4.2 Subscripts ........................................................................................................................................................ 11 5 Brief description of the method .............................................................................................................. 12 5.1 Output of the method .................................................................................................................................. 12 5.2 Extension of the method ............................................................................................................................ 12 5.3 Flowchart of the calculation procedure ............................................................................................... 12 5.4 Technologies covered by the standard ................................................................................................ 13 5.5 Description of cooling systems................................................................................................................ 13 6 Calculation method ...................................................................................................................................... 13 6.1 Output data ..................................................................................................................................................... 13 6.2 Calculation time interval and calculation period ............................................................................. 14 6.3 Calculation period ........................................................................................................................................ 14 6.4 Input data ........................................................................................................................................................ 15 6.4.1 Source of data ................................................................................................................................................ 15 6.4.2 Product data ................................................................................................................................................... 15 6.4.3 System design data ...................................................................................................................................... 16 6.4.4 Operating conditions .................................................................................................................................. 18 6.4.5 Constants and physical data ..................................................................................................................... 18 6.4.6 Input data from Annex A (Annex B) ...................................................................................................... 19 6.5 Calculation procedure, hourly method ................................................................................................ 19 6.5.1 Applicable time intervals .......................................................................................................................... 19 6.5.2 Operating conditions calculation ........................................................................................................... 19 6.5.3 Energy calculation ....................................................................................................................................... 19 6.6 Calculation procedure, monthly method ............................................................................................. 26 6.6.1 Applicable time step .................................................................................................................................... 26 6.6.2 Operating conditions calculation ........................................................................................................... 26 6.6.3 Energy calculation ....................................................................................................................................... 26 6.6.4 Simplification of formulae for the energy delivered to the storage, monthly method ....... 26 7 Quality control .............................................................................................................................................. 28 8 Compliance check......................................................................................................................................... 28 Annex A (normative)

Input and method selection data sheet — Template ........................................... 29 A.1 General ............................................................................................................................................................. 29 A.2 References ...................................................................................................................................................... 30 A.3 Hourly, monthly and annual method .................................................................................................... 30 A.3.1 Storage type .................................................................................................................................................... 30 A.3.2 Product storage technical data................................................................................................................ 30 SIST EN 16798-15:2018

EN 16798-15:2017 (E) 3 A.3.3 System design data ....................................................................................................................................... 31 A.3.3.1 Qualitative process design data choices ............................................................................................... 31 A.3.3.2 Quantitative process design data choices ............................................................................................ 31 A.3.3.3 Storage control options .............................................................................................................................. 31 A.4 Additional information for monthly method ...................................................................................... 31 Annex B (informative)

Input and method selection data sheet — Default choices ............................. 32 B.1 General ............................................................................................................................................................. 32 B.2 References ....................................................................................................................................................... 33 B.3 Hourly, bin, monthly and annual method ............................................................................................ 33 B.3.1 Storage type .................................................................................................................................................... 33 B.3.2 Product storage technical data ................................................................................................................ 33 B.3.3 System design data ....................................................................................................................................... 34 B.3.3.1 Qualitative process design data choices ............................................................................................... 34 B.3.3.2 Quantitative process design data choices ............................................................................................ 34 B.3.3.3 Process control options .............................................................................................................................. 35 B.4 Additional information for monthly and annual method .............................................................. 35 Bibliography ................................................................................................................................................................. 36

SIST EN 16798-15:2018

EN 16798-15:2017 (E) 4 European foreword This document (EN 16798-15:2017) has been prepared by Technical Committee CEN/TC 156 “Ventilation for buildings”, the secretariat of which is held by BSI. 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 December 2017 and conflicting national standards shall be withdrawn at the latest by December 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This standard has been produced to meet the requirements of Directive 2010/31/EU 19 May 2010 on the energy performance of buildings (recast), referred to as “recast EPDB”. For the convenience of Standards users CEN/TC 156, together with responsible Working Group Conveners, have prepared a simple table below relating, where appropriate, the relationship between the ‘EPBD’ and ‘recast EPBD’ standard numbers prepared by Technical Committee CEN/TC 156 “Ventilation for buildings”. EPBD

EN Number Recast EPBD EN Number Title EN 15251 EN 16798-1 Energy performance of buildings – Ventilation for buildings – Part 1:

Indoor environmental input parameters for design and assessment of energy performance of buildings addressing indoor air quality, thermal environment, lighting and acoustics (Module M1-6)

N/A CEN/TR 16798-2 Energy performance of buildings – Ventilation for buildings – Part 2: Interpretation of the requirements in EN 16798-1

– Indoor environmental input parameters for design and assessment of energy performance of buildings addressing indoor air quality, thermal environment, lighting and acoustics (Module M1-6)

EN 13779 EN 16798-3

Energy performance of buildings – Ventilation for buildings – Part 3: For non-residential buildings – Performance requirements for ventilation and room-conditioning systems (Modules M5-1, M5-4)

N/A CEN/TR 16798-4 Energy performance of buildings – Ventilation for buildings –

Part 4: Interpretation of the requirements in EN 16798- 3 – For non-residential buildings – Performance requirements for ventilation and room-conditioning systems (Modules M5-1, M5-4)

SIST EN 16798-15:2018

EN 16798-15:2017 (E) 5 EN 15241 EN 16798-5-1 Energy performance of buildings – Ventilation for buildings – Part 5-1: Calculation methods for energy requirements of ventilation and air conditioning systems (Modules M5-6, M5-8, M6-5, M6-8, M7-5, M7-8)

– Method 1: Distribution and generation

EN 15241 EN 16798-5-2 Energy performance of buildings – Ventilation for buildings – Part 5-2: Calculation methods for energy requirements of ventilation systems (Modules M5-6.2, M5-8.2) – Method 2: Distribution and generation

N/A CEN/TR 16798-6 Energy performance of buildings – Ventilation for buildings – Part 6: Interpretation of the requirements in EN 16798-5–1 and EN 16798-5-2 – Calculation methods for energy requirements of ventilation and air conditioning systems (Modules M5-6, M5-8, M 6-5, M6-8 , M7-5, M7-8) EN 15242 EN 16798-7 Energy performance of buildings – Ventilation for buildings – Part 7: Calculation methods for the determination of air flow rates in buildings including infiltration (Module M5-5)

N/A CEN/TR 16798-8 Energy performance of buildings – Ventilation for buildings – Part 8: Interpretation of the requirements in EN 16798-7 – Calculation methods for the determination of air flow rates in buildings including infiltration – (Module M5-5)

EN 15243 EN 16798-9

Energy performance of buildings – Ventilation for buildings – Part 9: Calculation methods for energy requirements of cooling systems

(Modules M4-1, M4-4, M4-9) – General

N/A CEN/TR 16798-10 Energy performance of buildings – Ventilation for buildings – Part 10: Interpretation of the requirements in EN 16798-9 – Calculation methods for energy requirements of cooling systems (Module M4-1,M4-4, M4-9) – General

EN 15243 EN 16798-13 Energy performance of buildings – Ventilation for buildings – Part 13: Calculation of cooling systems (Module M4-8) – Generation EN 15243 CEN/TR 16798-14 Energy performance of buildings – Ventilation for buildings – Part 14: Interpretation of the requirements in EN 16798-13 – Calculation of cooling systems (Module M4-8) – Generation N/A EN 16798-15 Energy performance of buildings – Ventilation for buildings – Part 15: Calculation of cooling systems (Module M4-7) – Storage

SIST EN 16798-15:2018

EN 16798-15:2017 (E) 6 N/A CEN/TR 16798-16 Energy performance of buildings – Ventilation for buildings – Part 16: Interpretation of the requirements in EN 16798-15 –

Calculation of cooling systems (Module M4-7) – Storage EN 15239 and EN 15240 EN 16798-17 Energy performance of buildings – Ventilation for buildings – Part 17: Guidelines for inspection of ventilation

and
air- conditioning systems (Module M4-11, M5-11, M6-11, M7-11)

N/A CEN/TR 16798-18 Energy performance of buildings – Ventilation for buildings –

Part 18: Interpretation of the requirements in EN 16798-17 – Guidelines for inspection of ventilation and

air-conditioning systems (Module M4-11, M5-11, M6-11, M7-11) According to the CEN-CENELEC Internal Regulations, the national standards organizations 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. SIST EN 16798-15:2018

EN 16798-15:2017 (E) 7 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. For the correct use of this standard a normative template is given in Annex A to specify these choices. Informative default choices are provided in Annex B. The main target groups of this standard are all the users of the set of EPB standards (e.g. engineers, regulators, programmers). Use by or for regulators: 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. These choices (either the informative default choices from Annex B or choices adapted to national / regional needs, but in any case following the template of this Annex A) can be made available as national annex or as separate (e.g. legal) document (national data sheet). NOTE So in this case: — the regulators will specify the choices; — the individual user will apply the standard to assess the energy performance of a building, and thereby use the choices made by the regulators. Topics addressed in this standard can be subject to public regulation. Public regulation on the same topics can override the default values in Annex B of this standard. Public regulation on the same topics can even, for certain applications, override the use of this standard. Legal requirements and choices are in general not published in standards but in legal documents. In order to avoid double publications and difficult updating of double documents, a national annex may refer to the legal texts where national choices have been made by public authorities. Different national annexes or national data sheets are possible, for different applications. It is expected, if the default values, choices and references to other EPB standards in Annex B are not followed due to national regulations, policy or traditions, that: — national or regional authorities prepare data sheets containing the choices and national or regional values, according to the model in Annex A. In this case the national annex (e.g. NA) refers to this text; — or, by default, the national standards body will consider the possibility to add or include a national annex in agreement with the template of Annex A, in accordance to the legal documents that give national or regional values and choices. Further target groups are parties wanting to motivate their assumptions by classifying the building energy performance for a dedicated building stock. More information is provided in the Technical Report accompanying this standard (CEN/TR 16798-16 [4]). SIST EN 16798-15:2018

EN 16798-15:2017 (E) 8 CEN/TC 156 deals with ventilation and air conditioning systems in buildings. Subjects covered by CEN/TC 156 are:

energy performance calculation for ventilation, air conditioning and cooling systems;

inspection of ventilation and air conditioning systems;

installation and commissioning of ventilation and air conditioning systems. This standard gives the methods applicable to calculate the energy performance of the cooling storage systems. SIST EN 16798-15:2018

EN 16798-15:2017 (E) 9 1 Scope This European Standard specifies a calculation method for the energy performance of storage systems used for ventilation systems. It takes into account the energy performance of storage systems using water from phase change material (PCM) to store cooling energy. This standard presents a general method applicable to the different technologies of water-based storage systems or PCM related controls systems. It does not cover the cooling emission, distribution and generation that are covered by EN 15316-2, EN 15316-3 and EN 16798-13 respectively. The standard covers typically hourly time steps but can be adapted to different time steps accordingly with the scenarios used for energy use and energy delivered or to bin method. A simplified method is provided for monthly or annual time step. This standard does not cover: — the cooling emission, distribution and generation systems; or — sizing or inspection of such storage systems. Table 1 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 52000-1:2017. NOTE 1 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 2 The modules represent EPB standards, although one EPB standard might cover more than one module and one module might 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. SIST EN 16798-15:2018

EN 16798-15:2017 (E) 10 Table 1 — Position of this standard (in casu M4–7) within the EPB set of standards

Overarching
Building (as such)
Technical Building Systems Submodule
Descriptions
Descriptions

Descriptions Heating Cooling Ventilation Humidification Dehumidification Domestic Hot water Lighting Building automation and control PV, wind, .. sub1

M3 M4 M5 M6 M7 M8 M9 M10 M11 1
General
General
General
Common terms and definitions; symbols, units and subscripts
Building Energy Needs
Needs
Applications
(Free) Indoor Conditions without Systems
Maximum Load and Power
Ways to Express Energy Performance
Ways to Express Energy Performance
Ways to Express Energy Performance
Building categories and Building Boundaries
Heat Transfer by Transmission
Emission and control
Building Occupancy and Operating Conditions
Heat Transfer by Infiltration and Ventilation
Distribution and control
Aggregation of Energy Services and Energy Carriers
Internal Heat Gains
Storage and control
EN 16798-15
Building zoning
Solar Heat Gains
Generation and control
Calculated Energy Performance
Building Dynamics (thermal mass)
Load dispatching and operating conditions
Measured Energy Performance
Measured Energy Performance
Measured Energy Performance
Inspection
Inspection
Inspection
Ways to Express Indoor Comfort
BMS
External Environment Conditions
Economic Calculation
a The shaded modules are not applicable. SIST EN 16798-15:2018

EN 16798-15:2017 (E) 11 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 ISO 52000-1:2017, Energy performance of buildings — Overarching EPB assessment — Part 1: General framework and procedures (ISO 52000-1:2017) NOTE 1 Default references to EPB standards other than EN ISO 52000-1:2017 are identified by the EPB module code number and given in Annex A (normative template) and Annex B (informative default choice). NOTE 2 Example of EPB module code number: M5–5, or M5–5.1 (if module M5–5 is subdivided), or M5–5/1 (if reference to a specific clause of the standard covering M5–5. NOTE 3 The same module code numbering will be used in other EPB standards. This will facilitate, in an individual country, the making of a consistent set of national annexes for each EPB standard and contribute to the overall consistency and transparency. 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 52000-1:2017 and the following apply. NOTE The terms of EN ISO 52000-1:2017 that are indispensable for the understanding of the underlying standard are repeated here. 3.1 EPB standard standard that complies with the requirements given in EN ISO 52000-1:2017, CEN/TS 16628 and CEN/TS 16629 3.2 Phase Change Material PCM substance capable of storing and releasing thermal energy in the form of latent heat (enthalpy) over a specific temperature range during which the material changes phase (from solid to liquid, or from liquid to solid), thus buffering external temperature changes 4 Symbols and subscripts 4.1 Symbols For the purposes of this document, the symbols given in Clause 4 and Annex C of EN ISO 52000-1:2017 apply. 4.2 Subscripts For the purposes of this document, the subscripts given in Clause 4 and Annex C of EN ISO 52000-1:2017, EN 12792, and the specific subscripts listed in Table 2 apply. Table 2 —Subscripts Subscript Term Sld Solid Stb Standby lqd Liquid tot total med Medium SIST EN 16798-15:2018

EN 16798-15:2017 (E) 12 5 Brief description of the method 5.1 Output of the method This method covers the calculation of energy delivered to the storage system, energy delivered from the storage systems to distribution system, auxiliary energy and thermal losses (recoverable or not) of storage systems used for cooling. The time step of the output can be: — hourly; — bin; — monthly; or — yearly, in accordance with the scenarios used to determine the thermal load. 5.2 Extension of the method The method presented in this standard can be extended to storage systems with multiple storage units. The adaptation depends on the hydraulic schema used for the design of the storage systems: — serial mounting: the storage units are hydraulically linked as the output of the storage unit 'n' becomes the input of the storage unit 'n+1'. The formulae are identical as the calculation procedure considers a loop for all storage units to calculate the total energy stored, the energy used and delivered and the corresponding volume of hot water delivered to the system; — parallel mounting: the control system sets the priority for the storage units that are considered independently. The method presented in this standard can be extended to storage systems with multiple storage units. 5.3 Flowchart of the calculation procedure Figure 1 illustrates the calculation process.

Figure 1 — Flow chart of the calculation method SIST EN 16798-15:2018

EN 16798-15:2017 (E) 13 5.4 Technologies covered by the standard The standard covers the calculation of the energy use for the following technologies: — storage of energy without phase change (use of the sensible thermal capacity of the material – water); — storage of energy using latent thermal capacity of water/ice: the ice is formed outside (most frequent) of a tube where the primary refrigerant is circulating. The set of tubes are installed inside an insulated reservoir which is connected to the refrigerating unit and to the distribution system. As an alternative the ice could be stored inside a tubing system; and — storage of energy using latent capacity of phase changing material (PCM) other than water. In this case the PCM is conditioned in nodules that are installed inside an insulated reservoir. The fluid, used as a medium to and from the storage, is controlled by a set a valve and pumps depending on the mode used (storage, use, storage + use). Figure 2 illustrates such technologies. 5.5 Description of cooling systems The cooling system storage includes: — the primary circuit between the cooling production unit and the storage unit; — the storage unit and the constitutive material; — the distribution system including the circulator and pipes. It excludes the heat exchanger with the air handling unit or other distribution systems and the cooling production.

Figure 2 — General model of the storage unit 6 Calculation method 6.1 Output data The output data of this method are listed in Table 3. SIST EN 16798-15:2018

EN 16798-15:2017 (E) 14 Table 3 — Output data of this method Name Symbol Computed symbol Unit Intended

destination Energy flow data

Heat extracted from the distribution system QC;sto;in Q_C_sto_in kWh M4–1 Heat losses (recoverable) QC;sto;ls;tot;rbl Q_C_sto_ls_tot_rbl kWh M2–2 Total auxiliary energy WC;sto;aux W_C_sto_aux kWh M4–1, M4–4 Operating condition data

Required temperature of the liquid flow to the storage ÍC;sto;in;req=theta_C_sto_in_req °C M4–1 Temperature(s) of the volume(s) of the storage

...

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