oSIST prEN 15316-4-2:2022

SLOVENSKI STANDARD
oSIST prEN 15316-4-2:2022
01-maj-2022
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
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 4-5: Wärmeerzeugung für
die Raumheizung, Wärmepumpensysteme, Module 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: prEN 15316-4-2
ICS:
27.080 Toplotne črpalke Heat pumps
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
oSIST prEN 15316-4-2:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 15316-4-2:2022

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oSIST prEN 15316-4-2:2022


DRAFT
EUROPEAN STANDARD
prEN 15316-4-2
NORME EUROPÉENNE

EUROPÄISCHE NORM

March 2022
ICS 91.140.10
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:
chauffage des locaux, systèmes de pompes à chaleur Wärmeerzeugung für die Raumheizung,
Module M3-8-2, M8-8-2 Wärmepumpensysteme, Module M3-8-2, M8-8-2
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 228.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15316-4-2:2022 E
worldwide for CEN national Members.

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oSIST prEN 15316-4-2:2022
prEN 15316-4-2:2022 (E)
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 9
3 Terms and definitions .10
4 Symbols and abbreviations .13
4.1 Symbols .13
4.2 Subscripts .13
5 Description of the methods .14
5.1 Output of the method .14
5.2 Alternative methods .15
5.3 Multiple heat generators .15
5.4 Multiple services within a calculation interval .15
5.5 System boundary .15
5.6 Auxiliary energy .15
6 Calculation method .16
6.1 Output data .16
6.2 Input data .17
6.2.1 General .17
6.2.2 Product data .17
6.2.3 Operating conditions .26
6.2.4 Other calculation parameters.27
6.2.5 Constants and physical data .28
6.3 Calculation time intervals .28
6.4 Calculation procedure flow chart .28
6.5 Required energy output for each service .28
6.5.1 Domestic hot water service (W) .28
6.5.2 Space heating service (H) .28
6.6 Source temperature .29
6.6.1 General .29
6.6.2 External air .29
6.6.3 Exhaust air .29
6.6.4 Ground heat exchanger, horizontal, water or brine .29
6.6.5 Ground heat exchanger, vertical, water or brine .30
6.6.6 Ground, direct expansion .30
6.6.7 Ground water .30
6.6.8 Surface water .31
6.7 Sink temperature .31
6.7.1 General .31
6.7.2 Indoor air .31
6.7.3 Ducted air (ventilation) .32
6.7.4 Technical water (heat transfer medium of the system) .32
6.7.5 Domestic hot water .32
6.8 Operational limits and authorisation .32
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6.9 Priorities . 33
6.10 Full load heat power output. 33
6.10.1 General . 33
6.10.2 Extrapolated performance map (Path A from single value) . 34
6.10.3 Known performance map (Path A with more product data) . 36
6.10.4 EN 14825 air to air . 36
6.10.5 EN 14825 air to water . 37
6.11 Running time and load factor and output for each priority . 37
6.11.1 General . 37
6.11.2 Default time allocation criterion for priorities. 37
6.12 Main energy input . 39
6.12.1 General . 39
6.12.2 Path A . 39
6.12.3 Path B, air to air heat pumps . 49
6.12.4 Path B, air to water heat pumps . 55
6.12.5 Absorption/Adsorption heat pumps . 61
6.12.6 Combustion engine driven heat pumps . 61
6.13 Calculation of the back-up heater . 62
6.13.1 General . 62
6.13.2 Calculation procedure. 62
6.14 Auxiliary energy . 62
6.14.1 External auxiliary energy . 62
6.14.2 Auxiliary energy during stand-by . 63
6.14.3 Total auxiliary energy for priority pi . 64
6.14.4 Auxiliary energy during power-off . 64
6.15 Recoverable heat losses of the heat pump . 64
6.15.1 General . 64
6.15.2 Recoverable heat losses from auxiliary energy . 64
6.16 Attribution of results of priorities to services . 65
6.17 Data collection and partial performance indicators. 65
6.18 Total results . 66
7 Quality control . 66
7.1 Calculation report . 66
7.2 Error reporting . 67
8 Compliance check . 67
Annex A (normative) Template for input data . 68
A.1 General . 68
A.2 References . 69
A.3 Heat pump description data . 69
A.3.1 Heat pump fuel . 69
A.3.2 Back-up fuel . 69
A.3.3 Type of energy taken from the source . 69
A.4 Heat pump technical data . 70
A.4.1 Technical data for all calculation paths . 70
A.4.2 Technical data for Path A . 70
A.4.3 Technical data for Path B . 72
A.4.4 Performance map for Path B . 73
A.5 System design data (Time constant of distribution and emitters) . 75
A.6 Calculation parameters . 75
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A.6.1 Extrapolation matrix coefficients.75
A.6.2 Maximum extrapolation .77
A.6.3 Default parameters for source temperature modelling .77
A.7 Calculation path choices .78
A.8 Priority management .81
Annex B (informative) Default values .82
B.1 General .82
B.2 References .82
B.3 Heat pump description data .83
B.3.1 Heat pump energy carrier .83
B.3.2 Back-up energy carrier .84
B.3.3 Type of energy taken from the source .84
B.4 Heat pump technical data .84
B.4.1 Technical data for all calculation paths .84
B.4.2 Technical data for Path A .85
B.4.3 Technical data for Path B .87
B.4.4 Performance map for Path B .88
B.5 System design data .90
B.6 Calculation parameters .91
B.6.1 Extrapolation matrix coefficients.91
B.6.2 Maximum extrapolation .95
B.6.3 Default parameters for source temperature modelling .96
B.7 Calculation path choices .97
B.8 Priority management . 100
Annex C (informative) Calculation flow chart . 101
Annex D (informative) Examples of filled in interpolation matrixes (path A). 107
Annex E (informative) Calculation examples for path B . 112
E.1 Scope of this annex . 112
E.2 Air-to-air heat pump with modulating mode of operation . 112
E.3 Air-to-water heat pump with modulating mode of operation . 123
E.4 Air-to-water heat pump with ON-OFF mode of operation . 133
Bibliography . 141

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oSIST prEN 15316-4-2:2022
prEN 15316-4-2:2022 (E)
European foreword
This document (prEN 15316-4-2:2022) 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 15316-4-2:2017.
The main changes compared to EN 15316-4-2:2017 are:
1) inclusion of more types of heat pumps, such as air to air (direct expansion);
2) method B has been withdrawn;
3) path A and path B have been reviewed and integrated into a unique frame;
4) Annex A contains a template for the data and parameters used in the standards and Annex B a set of
default values. Default values given in Annex B may be overridden by a national annex.

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oSIST prEN 15316-4-2:2022
prEN 15316-4-2:2022 (E)
Introduction
This document 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 water based heating and cooling systems in buildings. Subjects covered by
CEN/TC 228 are:
— energy performance calculation for heating and cooling systems;
— inspection of heating systems;
— design of heating systems and water-based cooling systems;
— installation and commissioning of heating systems.
This document specifies how to calculate the energy performance of heat pump systems used for
domestic hot water preparation or space heating purpose.
This document also includes direct expansion and/or condensation systems.
For the correct use of this standard, Annex A specifies the required choices and input data. Default choices
and input data 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. If the default values and choices in Annex A are not followed due to national regulations, policy
or traditions, it is expected 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 document covers hourly calculation intervals.

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prEN 15316-4-2:2022 (E)
1 Scope
This document cover heat pumps for space heating, domestic hot water production and alternate
operation, where the same heat pump delivers the heat to cover the space heating and domestic hot water
heat requirement.
The document provides a calculation method under steady conditions that corresponds to one calculation
interval.
This calculation is intended to be connected to the whole building calculation model and takes in account
the external conditions and building controls that influence the energy requirements for heating supplied
by the heat pump system.
The scope of this standard is to standardize the:
— required inputs;
— calculation methods;
— required outputs;
of the generation for space heating and domestic hot water production of the following heat pump
systems:
— 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 sink listed in Table 1.
Table 1 — Heating sources and sinks
Source Sink
Outdoor air Indoor air
Exhaust-air Ducted air
Indirect ground source with brine Technical water
Indirect ground source with water Domestic hot water
Direct ground source (DX, direct expansion)
Surface water
Ground water

This document does not cover sizing or inspection of heat pumps.
Heat pumps for cooling systems are taken into account in module M4–8. Other generation systems such
as boilers are covered in other sub modules of part M3-8.
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 1 The same table can be found in CEN ISO/TR 52000-2, with, for each module, the numbers of the relevant
EPB standards and accompanying technical reports that are published or in preparation.
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prEN 15316-4-2:2022 (E)
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.
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 sub M2 sub  M3 M4 M5 M6 M7 M8 M9 M10 M11

1 General  1 General 1 General

Common
terms and
Building
2 definitions;  2 2 Needs

Energy Needs
symbols, units
and subscripts
(Free) Indoor
Conditions Maximum Load
3 Applications  3 3

without and Power
Systems
Ways to Ways to
Ways to
Express Express
4  4 4 Express Energy

Energy Energy
Performance
Performance Performance
Building
Heat Transfer
Functions and Emission and
5  5 by 5
Building control
Transmission
Boundaries
Building Heat Transfer
Occupancy by Infiltration Distribution
6  6 6
and Operating and and control
Conditions Ventilation
Aggregation of
Energy
Internal Storage and
7 Services and  7 7
Heat Gains control
Energy
Carriers
Building Solar
8  8 8 Generation
Partitioning Heat Gains
Combustion
     8–1
boilers
15316– 15316–
     8–2 Heat pumps
4-2 4-2
Thermal solar
     8–3
Photovoltaics
On-site
     8–4

cogeneration
District heating
     8–5
and cooling
8
Descriptions
Descriptions
Descriptions
Heating
Cooling
Ventilation
Humidificatio
n
Dehumidifica
tion
Domestic Hot
water
Lighting
Building
automation

Electricity
production

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oSIST prEN 153
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