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

This European Standard covers the energy performance calculation of complete cooling systems. It gives a calculation method that defines how to collect the cooling energy requirements from the thermal zones and from the air handling units connected to a distribution system, and how to aggregate multiple distribution systems to an overall system energy requirement. It incorporates the calculation of the emission and distribution losses and auxiliary energy. The required cooling energy to be extracted by the cooling generation system is calculated, and the cooling energy storage is considered. It gives a method on how to dispatch the cooling energy provided by the cooling generation to different distribution systems, and possible priorities are considered.
This European Standard defines energy performance indicators for cooling systems.
Table 1 shows the relative position of this standard within the EPB package of 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 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.

Energetische Bewertung von Gebäuden - Lüftung von Gebäuden - Teil 9: Berechnungsmethoden für den Energiebedarf von Kühlsystemen (Module M4-1, M4-4, M4-9) - Allgemeines

Diese Europäische Norm behandelt die Berechnung der Gesamtenergieeffizienz von der gesamten Kälteanlage. Sie enthält ein Berechnungsverfahren, das definiert, wie der Kühlenergiebedarf der thermischen Zonen und der an ein Verteilungssystem angeschlossenen zentralen raumlufttechnischen Geräte zu bestimmen ist und wie die Bedarfe mehrerer Verteilungssysteme zu einem Gesamtenergiebedarf der Anlage zusammengefasst werden können. Sie umfasst die Berechnung der Emissions- und Verteilungsverluste und der Hilfsenergie. Die erforderliche, durch das Kälteerzeugungssystem abzuführende Kühlenergie wird berechnet und die Kühlenergiespeicherung wird berücksichtigt. Sie enthält ein Verfahren zur Verteilung der durch das Kälteerzeugungssystem abgegebenen Kühlenergie an verschiedene Verteilungssysteme unter Berücksichtigung möglicher Prioritäten.
Diese Europäische Norm definiert Energieeffizienzindikatoren für Kälteanlagen.
Tabelle 1 zeigt die relative Position dieser Norm innerhalb des EPB Normenpakets im Kontext der in prEN ISO 52000 1 dargestellten modularen Struktur.
ANMERKUNG 1   In prCEN ISO/TR 52000 2 ist dieselbe Tabelle zu finden, die für jedes Modul die Nummern der relevanten EPB-Normen und der begleitenden Technischen Berichte enthält, die veröffentlicht wurden oder sich in Vorbereitung befinden.
ANMERKUNG 2   Die Module repräsentieren EPB-Normen, auch wenn eine EPB-Norm mehr als ein Modul abdecken kann und ein Modul von mehr als einer EPB-Norm abgedeckt werden kann, zum Beispiel eine jeweils vereinfachte und detaillierte Methode. Siehe auch Abschnitt 2 und Tabellen A.1 und B.1.

Performance énergétique des bâtiments - Ventilation des bâtiments - Partie 9 : Module M4-1,M4-4, M4-9 - Méthodes de calcul des exigences énergétique des systèmes de refroidissement - Généralités

La présente Norme européenne traite du calcul de la performance énergétique des systèmes de refroidissement complets. Elle donne une méthode de calcul déterminant la manière de collecter les exigences relatives à l'énergie de refroidissement des zones thermiques et des caissons de traitement d’air connectés au système de distribution, ainsi que la manière d’assembler les systèmes de distribution multiples en une exigence énergétique du système globale. Elle contient le calcul des pertes à l’émission et à la distribution ainsi que celui de l'énergie des auxiliaires. L'énergie de refroidissement requise à extraire par le système de génération de froid est calculée, et le stockage de l'énergie de refroidissement est pris en compte. Elle donne une méthode indiquant comment distribuer l'énergie de refroidissement fournie par la génération de froid aux différents systèmes de distribution, et les priorités éventuelles sont prises en compte.
La présente Norme européenne définit les indicateurs de performance énergétique des systèmes de refroidissement.
Le Tableau 1 indique la position relative de la présente norme dans l’ensemble de normes PEB dans le cadre de la structure modulaire donnée dans le prEN ISO 52000 1.
NOTE 1   Le même tableau figure dans le prCEN ISO/TR 52000 2 avec, pour chaque module, le numéro des normes PEB correspondantes et les rapports techniques associés qui sont publiés ou en cours d'élaboration.
NOTE 2   Les modules représentent des normes PEB, bien qu'une norme PEB puisse couvrir plus d'un module et qu'un module puisse être couvert par plusieurs normes PEB, par exemple une méthode simplifiée et détaillée respectivement. Voir également l'Article 2 et les Tableaux A.1 et B.1.

Energijske lastnosti stavb - Prezračevanje stavb - 9. del: Metode za izračun potrebne energije za hladilne sisteme - Moduli M4-1, M4-4, M4-9 - Splošno

Ta standard zajema izračun energetske učinkovitosti celovitih hladilnih sistemov. Podaja računsko metodo, ki določa zahteve za način zbiranja hladilne energije iz toplotnih območij in prezračevalnih enot, povezanih s sistemov za distribucijo, ter način združevanja več distribucijskih sistemov za izpolnjevanje skupnih energijskih potreb sistema. Vključuje tudi izračun oddanih emisij in uhajanja pri distribuciji ter izračun pomožne energije. Izračuna se potrebna hladilna energija, ki jo mora hladilni sistem odvajati, ob upoštevanju shranjevanja hladilne energije. Podaja metodo za pošiljanje hladilne energije, ki jo proizvajajo hladilni sistemi, v različne distribucijske sisteme, pri čemer metoda upošteva možna prednostna opravila.
Ta standard opredeljuje kazalnike energetske učinkovitosti hladilnih sistemov, povezane s tehničnim sistemom.

General Information

Status
Published
Publication Date
13-Jun-2017
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
14-Jun-2017
Completion Date
14-Jun-2017

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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 9: Berechnungsmethoden für den Energiebedarf von Kühlsystemen (Module M4-1, M4-4, M4-9) - AllgemeinesPerformance énergétique des bâtiments - Ventilation des bâtiments - Partie 9 : Module M4-1,M4-4, M4-9 - Méthodes de calcul des exigences énergétique des systèmes de refroidissement - GénéralitésEnergy performance of buildings - Ventilation for buildings - Part 9: Calculation methods for energy requirements of cooling systems (Modules M4-1, M4-4, M4-9) - General91.140.30VLVWHPLVentilation and air-conditioning systemsICS:Ta slovenski standard je istoveten z:EN 16798-9:2017SIST EN 16798-9:2018en,fr,de01-julij-2018SIST EN 16798-9:2018SLOVENSKI

STANDARDSIST EN 15243:20071DGRPHãþD
SIST EN 16798-9:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16798-9
June
t r s y ICS
{ sä s t rä s râ
{ sä s v rä u r Supersedes EN
s w t v uã t r r yEnglish Version
Energy performance of buildings æ Ventilation for buildings æ Part

{ã Calculation methods for energy requirements of Performance énergétique des bâtiments æ Ventilation des bâtiments æ Partie

{ ã Module M væ sáM væ vá M væ { æ Méthodes de calcul des exigences énergétique des systèmes de refroidissement æ Généralités

Energieeffizienz
von Gebäuden æ Lüftung von Gebäuden æ Teil

{ã Modul M væ sâ væ vá M væ { æ Berechnungsverfahren für den Energiebedarf der Kühlsysteme æ Allgemeines 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 {ã t r s y ESIST EN 16798-9:2018
EN 16798-9:2017 (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 ........................................................................................................................................................ 12 5 Brief description of the methods ............................................................................................................ 12 5.1 Output of the method .................................................................................................................................. 12 5.2 General description of the methods ...................................................................................................... 13 5.3 Selection criteria between the methods .............................................................................................. 14 5.4 Required functionality of cooling system calculation methods .................................................. 14 6 Calculation method 1 (simplified) ......................................................................................................... 14 6.1 Output data ..................................................................................................................................................... 14 6.2 Calculation time interval and calculation period ............................................................................. 16 6.2.1 Calculation interval ..................................................................................................................................... 16 6.2.2 Calculation period ........................................................................................................................................ 16 6.3 Input data ........................................................................................................................................................ 16 6.3.1 Source of data ................................................................................................................................................ 16 6.3.2 Configuration and system design data ................................................................................................. 16 6.3.3 Operating or boundary conditions ........................................................................................................ 18 6.4 Calculation procedure, method 1 ........................................................................................................... 18 6.4.1 Applicable time intervals .......................................................................................................................... 18 6.4.2 Operating conditions calculation ........................................................................................................... 19 6.4.3 Energy calculation ....................................................................................................................................... 20 7 Calculation method 2 (detailed) ............................................................................................................. 21 7.1 Output data ..................................................................................................................................................... 21 7.2 Calculation time interval and calculation period ............................................................................. 23 7.2.1 Calculation interval ..................................................................................................................................... 23 7.2.2 Calculation period ........................................................................................................................................ 23 7.3 Input data ........................................................................................................................................................ 23 7.3.1 Source of data ................................................................................................................................................ 23 7.3.2 Configuration and system design data ................................................................................................. 24 7.3.3 Operating or boundary conditions ........................................................................................................ 26 7.3.4 Constants and physical data ..................................................................................................................... 27 7.4 Calculation procedure, method 2 ........................................................................................................... 27 7.4.1 Applicable time intervals .......................................................................................................................... 27 7.4.2 Operating conditions calculation ........................................................................................................... 27 7.4.3 Energy Calculation ....................................................................................................................................... 29 8 Energy performance expression............................................................................................................. 31 8.1 Annual efficiency of cooling system ...................................................................................................... 31 8.2 Annual efficiency of cooling generation system ............................................................................... 32 SIST EN 16798-9:2018

EN 16798-9:2017 (E) 3 9 Quality control ............................................................................................................................................... 32 10 Compliance check ......................................................................................................................................... 32 Annex A (normative)

Input and method selection data sheet — Template ......................................... 33 A.1 General ............................................................................................................................................................. 33 A.2 References ....................................................................................................................................................... 34 A.3 System design data ....................................................................................................................................... 34 A.3.1 Default process design data choices ...................................................................................................... 34 A.3.2 Default process control options .............................................................................................................. 34 A.3.3 Factors for simplified distribution calculation .................................................................................. 35 A.3.4 Energy weighting factors ........................................................................................................................... 35 Annex B (informative)

Input and method selection data sheet — Default choices ........................... 36 B.1 General ............................................................................................................................................................. 36 B.2 References ....................................................................................................................................................... 36 B.3 System design data ....................................................................................................................................... 37 B.3.1 Default process design data choices ...................................................................................................... 37 B.3.2 Default process control options .............................................................................................................. 38 B.3.3 Default factors for simplified distribution calculation ................................................................... 38 B.3.4 Default energy weighting factors ............................................................................................................ 38 Annex C (normative)

System overview and required functionalities .................................................... 39 Bibliography ................................................................................................................................................................. 42

SIST EN 16798-9:2018

EN 16798-9:2017 (E) 4 European foreword This document (EN 16798-9:2017) has been prepared by Technical Committee CEN/TC 156 “Ventilation for buildings”, the secretariat of which is held by BSI. 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”. 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 shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 15243:2007. EN 15243:2007 was produced to meet the requirements of Directive 2002/91/EC 16 December 2002 on energy performance of buildings referred to as “EPBD”. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. 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 16798-9:2018
EN 16798-9:2017 (E) 5 EPBD

EN Number Recast EPBD EN Number Title 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, M5-8, M6-5, M6-8, M7-5, M7-8) - 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 (Modules 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 – (Modules 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 N/A EN 16798–13 Energy performance of buildings – Ventilation for buildings - Part 13: - Calculation of cooling systems (Module M4-8) – Generation N/A 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 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 M4-8) – 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) SIST EN 16798-9:2018

EN 16798-9:2017 (E) 6 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. SIST EN 16798-9:2018

EN 16798-9:2017 (E) 7 Introduction This 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 “EPB set of 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 1 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. Default references to other EPB standards, identified by the EPB module code number, are given in Table B.1. If alternative references are specified, this should be done in Table NA.1 of a National Annex, which should follow the template given in Table A.1. 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 a individual country, the making of a consistent set of national annexes for each EPB standard and contribute to the overall consistency and transparency. SIST EN 16798-9:2018

EN 16798-9:2017 (E) 8 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 16798-10 [4], under preparation). TC 156 deals with ventilation and air conditioning systems in buildings. Subjects covered by TC 156 are: — energy performance calculation for ventilation, air conditioning and cooling systems; — inspection of ventilation and air conditioning systems; and — installation and commissioning of ventilation and air conditioning systems. This standard gives the method of how to apply and combine the calculation methods given in the different cooling related standards covering sub-system calculations, in order to get a consistent overall calculation of an envisaged cooling system. It also contains information on how to express the energy performance of cooling systems as technical system related energy performance indicators. This standard replaces EN 15243:2007 [1], which was developed during the first EPBD mandate and was published in 2007. However, due to the revision of the whole EBPD related standards, the majority of the content of EN 15243 are covered elsewhere, or the calculation methods presented cover issues that are now described in more detail in other EPBD standards. Specifically, the following parts are covered in other standards: — Clause 5: CEN/TR 16798-10; — Clauses 6 to 8: prEN ISO 52016-1; — Clause 9: prEN ISO/TR 52016-2; — Clause 10 and 11: prEN ISO 52016-1; — Clause 12: prEN ISO/TR 52016-2; and — Clause 13: prEN ISO 52016-1. This European Standard specifically replaces EN 15243:2007, Clause 14. SIST EN 16798-9:2018

EN 16798-9:2017 (E) 9 1 Scope This European Standard covers the energy performance calculation of complete cooling systems. It gives a calculation method that defines how to collect the cooling energy requirements from the thermal zones and from the air handling units connected to a distribution system, and how to aggregate multiple distribution systems to an overall system energy requirement. It incorporates the calculation of the emission and distribution losses and auxiliary energy. The required cooling energy to be extracted by the cooling generation system is calculated, and the cooling energy storage is considered. It gives a method on how to dispatch the cooling energy provided by the cooling generation to different distribution systems, and possible priorities are considered. This European Standard defines energy performance indicators for cooling systems. Table 1 shows the relative position of this standard within the EPB package of 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 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 16798-9:2018

EN 16798-9:2017 (E) 10 Table 1 — Position of this standard (in casu M4–1, M4–4, M4–9) 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 M1 M2

M3 M4 M5 M6 M7 M8 M9 M10 M11 1 General General General
EN 16798–9

2 Common terms and definitions; symbols, units and subscripts Building Energy Needs Needs

3 Applications (Free) Indoor Conditions without Systems Maximum Load and Power

4 Ways to Express Energy Performance Ways to Express Energy Performance Ways to Express Energy Performance

EN 16798-9

5 Building categories and Building Boundaries Heat Transfer by Transmission Emission and control

6 Building Occupancy and Operating Conditions Heat Transfer by Infiltration and Ventilation Distribution and control

7 Aggregation of Energy Services and Energy Carriers Internal Heat Gains Storage and control

8 Building zoning Solar Heat Gains Generation and control

9 Calculated Energy Performance Building Dynamics (thermal mass) Load dispatching and operating conditions

EN 16798–9
SIST EN 16798-9:2018
EN 16798-9:2017 (E) 11

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 M1 M2

M3 M4 M5 M6 M7 M8 M9 M10 M11 10 Measured Energy Performance Measured Energy Performance Measured Energy Performance

11 Inspection Inspection Inspection
12 Ways to Express Indoor Comfort
BMS
13 External Environment Conditions
14 Economic Calculation

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 12792:2003, Ventilation for buildings - Symbols, terminology and graphical symbols prEN ISO 52000-1:2016, Energy performance of buildings — Overarching EPB assessment — Part 1: General framework and procedures EN ISO 7345:1995, Thermal insulation - Physical quantities and definitions (ISO 7345:1987) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 7345:1995, prEN ISO 52000-1:2016 and EN 12792:2003 apply. 4 Symbols and subscripts 4.1 Symbols For the purposes of this Standard, the symbols given in prEN ISO 52000-1:2016 and EN 12792:2003 apply. SIST EN 16798-9:2018

EN 16798-9:2017 (E) 12 4.2 Subscripts For the purposes of this Standard, the subscripts given in EN ISO 52000-1:2016 and EN 12792:2003 and the specific subscripts listed in Table 2 apply. Table 2 — Subscripts Subscript Term Subscript Term Subscript Term abs absorption flw Flow set set point ahu Air handling unit req required wat water des design ret return

5 Brief description of the methods 5.1 Output of the method The method covers the calculation of: — the required cooling generation outlet temperature; — the flow and return water temperatures in the cooling distribution systems, based on the required values; — the volume flow rates of the cooling distribution systems; — the required cooling energy to be extracted by the cooling generation system, based on the requirements of the thermal zones and the air handling units calculated according to the module M2-2 and M5-8 standards; — the cooling energy extracted from the distribution systems, based on the cooling energy extracted by the generation system according to the M4-8 standard and possible storage effects according to the M4-7 standard, considering possible priorities; — the cooling energy extracted from the thermal zones and the air handling units, considering the emission losses according to the M4-5 standard and the distribution losses according to the M4-6 standard; and — technical system performance indicators for cooling systems. The interval of the output can be: — yearly; — monthly; — hourly; or — bin. NOTE For the definition and explanation of a bin see prCEN ISO/TR 52000-2. SIST EN 16798-9:2018

EN 16798-9:2017 (E) 13 5.2 General description of the methods In this and all subsequent calculation methods, cooling energy is defined as extracted heat in th

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