Gas-fired endothermic engine driven heat pumps - Part 5: Calculation of seasonal performances in heating and cooling mode

1.1   Scope of FprEN 16905 series
This European Standard specifies the requirements, test methods and test conditions for the rating and performance calculation of air conditioners and heat pumps using either air, water or brine as heat transfer media, with gas-fired endothermic engine driven compressors when used for space heating, cooling and refrigeration, hereafter referred to as “GEHP appliance”.
This European Standard only applies to appliances with a maximum heat input (based on net calorific value) not exceeding 70 kW at standard rating conditions.
This European Standard only applies to appliances under categories I2H, I2E, I2Er, I2R, I2E(S)B, I2L, I2LL, I2ELL, I2E(R)B, I2ESi, I2E(R), I3P, I3B, I3B/P, II2H3+, II2Er3+, II2H3B/P, II2L3B/P, II2E3B/P, II2ELL3B/P, II2L3P, II2H3P, II2E3P and II2Er3P according to EN 437.
This European Standard only applies to appliances having:
a)   gas fired endothermic engines under the control of fully automatic control systems;
b)   closed system refrigerant circuits in which the refrigerant does not come into direct contact with the fluid to be cooled or heated;
c)   where the temperature of the heat transfer fluid of the heating system (heating water circuit) does not exceed 105 °C during normal operation;
d)   where the maximum operating pressure in the:
1)   heating water circuit (if installed) does not exceed 6 bar,
2)   domestic hot water circuit (if installed) does not exceed 10 bar.
This European Standard applies to appliances only when used for space heating or space cooling or for refrigeration, with or without heat recovery.
The appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by this European Standard.
Packaged units, single split and multisplit systems are covered by this European Standard. Single duct and double duct units are covered by this European Standard.
The above appliances can have one or more primary or secondary functions.
This European Standard is applicable to appliances that are intended to be type tested. Requirements for appliances that are not type tested would need to be subject to further consideration.
In the case of packaged units (consisting of several parts), this European Standard applies only to those designed and supplied as a complete package.
NOTE   All the symbols given in this text are used regardless of the language used.
1.2   Scope of FprEN 16905 5
This part of the FprEN 16905 series specifies the calculation of seasonal performance factor for gas-fired endothermic engine driven heat pumps for heating and/or cooling mode including the engine heat recovery.

Gasbefeuerte endothermische Motor-Wärmepumpen - Teil 5: Berechnung der saisonalen Effizienzkennzahlen im Heiz- und Kühlmodus

1.1   Anwendungsbereich der Normenreihe EN 16905
Diese Europäische Norm legt die Anforderungen, Prüfverfahren und Prüfbedingungen für die Bewertung und Leistungsberechnung von Luftkonditionierern und Wärmepumpen mit gasbefeuerten endothermischen motorgetriebenen Verdichtern fest, die entweder Luft, Wasser oder Sole als Wärmeübertragungsmedium verwenden und zur Raumbeheizung, Raumkühlung und Kälteerzeugung dienen, nachfolgend als "GEHP-Gerät" bezeichnet.
Diese Europäische Norm gilt ausschließlich für Geräte mit einer maximalen Wärmebelastung von 70 kW (bezogen auf den Heizwert [NCV; en: net calorific value]) bei Norm-Nennbedingungen.
Diese Europäische Norm gilt entsprechend der EN 437 ausschließlich für Geräte der Kategorien I2H, I2E, I2Er, I2R, I2E(S)B, I2L, I2LL, I2ELL, I2E(R)B, I2ESi, I2E(R), I3P, I3B, I3B/P, II2H3+, II2Er3+, II2H3B/P, II2L3B/P, II2E3B/P, II2ELL3B/P, II2L3P, II2H3P, II2E3P und II2Er3P.
Diese Europäische Norm gilt ausschließlich für Geräte mit:
a)   endothermischen Gasmotoren, die durch vollständig automatisierte Regelungen gesteuert werden;
b)   geschlossenen Kühlkreislaufsystemen, in denen das Kühlmittel nicht direkt mit der zu kühlenden oder zu erwärmenden Flüssigkeit in Berührung kommt;
c)   einer Temperatur des Wärmeübertragungsmediums im Heizsystem (Heizungswasserkreislauf), die im Normalbetrieb 105 °C nicht überschreitet;
d)   einem höchsten Betriebsdruck im:
1)   Heizungswasserkreislauf (falls installiert), der 6 bar nicht überschreitet;
2)   Trinkwasserkreislauf (falls installiert), der 10 bar nicht überschreitet.
Diese Europäische Norm gilt ausschließlich für Geräte, die zur Raumheizung oder -kühlung oder zur Kälteerzeugung mit oder ohne Wärmerückgewinnung angewendet werden.
In dieser Europäischen Norm werden keine Geräte behandelt, deren Kondensator mit Luft oder durch Verdampfung von zusätzlichem Wasser auf der Außenseite gekühlt wird.
In dieser Europäischen Norm werden Kompaktsysteme, Single-Split- und Multi-Split-Systeme behandelt. Auch Einkanal- und Zweikanal-Einheiten werden in der vorliegenden Europäischen Norm behandelt.
Die vorstehend aufgeführten Geräte können eine oder mehrere Primär- oder Sekundärfunktion(en) haben.
Diese Europäische Norm gilt für Geräte, die einer Typprüfung zu unterziehen sind. Anforderungen an nicht typgeprüfte Geräte wären ein Thema für weitere Überlegungen.
Bei (aus mehreren Teilen bestehenden) Kompaktsystemen gilt die vorliegende Europäische Norm nur, wenn sie als vollständige Baugruppe ausgelegt und geliefert werden.
ANMERKUNG   Sämtliche in diesem Text angegebenen Symbole werden unabhängig von der jeweilig verwendeten Sprache angewendet.
1.2   Anwendungsbereich der EN 16905-5
Dieser Teil der Normenreihe EN 16905 legt Berechnungsverfahren für den saisonalen Leistungsfaktor von gasbefeuerten endothermischen Motor-Wärmepumpen fest, die für den Heiz- und/oder Kühlbetrieb, einschließlich der Motor-Wärmerückgewinnung, vorgesehen sind.

Pompes à chaleur à moteur endothermique alimenté au gaz -Partie 5 : Calcul des performances saisonnières en modes chauffage et refroidissement

1.1   Domaine d'application de la série EN 16905
La présente Norme européenne spécifie les exigences, les méthodes d'essai et les conditions d'essai applicables aux calculs des caractéristiques et des performances des climatiseurs et pompes à chaleur utilisant de l'air, de l'eau ou de l'eau glycolée comme fluide caloporteur, munis de compresseurs à moteur endothermique alimenté au gaz, et destinés à des applications de chauffage, de refroidissement et de réfrigération de locaux (ci-après désignés par l'appellation « appareils GEHP »).
Cette norme s'applique uniquement aux appareils dont le débit calorifique maximal (dérivé du pouvoir calorifique inférieur) ne dépasse pas 70 kW dans les conditions de performance nominale.
Elle se limite également aux appareils classés dans les catégories I2H, I2E, I2Er, I2R, I2E(S)B, I2L, I2LL, I2ELL, I2E(R)B, I2ESi, I2E(R), I3P, I3B, I3B/P, II2H3+, II2Er3+, II2H3B/P, II2L3B/P, II2E3B/P, II2ELL3B/P, II2L3P, II2H3P, II2E3P et II2Er3P de l'EN 437.
Cette norme ne s'applique qu'aux appareils :
a)   équipés de moteurs endothermiques alimentés au gaz régulés par des systèmes de régulation entièrement automatisés ;
b)   comportant des circuits fermés de réfrigérant dans lesquels le réfrigérant n'entre pas en contact direct avec le fluide à refroidir ou à chauffer ;
c)   dans lesquels la température du fluide caloporteur du système de chauffage (circuit d'eau de chauffage) ne dépasse pas 105 °C dans les conditions normales de fonctionnement ;
d)   dans lesquels la pression maximale de fonctionnement
1)   ne dépasse pas 6 bar dans le circuit d'eau de chauffage (le cas échéant) et
2)   ne dépasse pas 10 bar dans le circuit d'eau chaude sanitaire (le cas échéant).
Cette norme s'applique aux appareils utilisés uniquement pour le chauffage de locaux, le refroidissement de locaux ou la réfrigération, avec ou sans récupération de chaleur.
Elle ne couvre pas les appareils dont le condenseur est refroidi par air et par évaporation de l'eau d'un circuit supplémentaire externe.
Cette norme couvre les systèmes autonomes, mono-split et multi-split. Les installations à simple conduit et à double conduit entrent également dans son domaine d'application.
Les appareils ci-dessus peuvent assurer une ou plusieurs fonctions principales ou secondaires.
Cette norme s'applique aux appareils destinés à être soumis à des essais de type. Les exigences relatives aux appareils non soumis à des essais de type pourraient appeler des considérations supplémentaires.
Dans le cas des appareils autonomes (constitués de plusieurs éléments), la norme ne s'applique qu'aux appareils conçus et fournis sous forme d'ensemble complet.
NOTE   Il faut employer tous les symboles spécifiés dans le présent document, quelle que soit la langue utilisée.
1.2   Domaine d'application de la présente EN 16905-5
La présente partie de la série EN 16905 décrit le calcul du facteur de performance saisonnière pour le mode chauffage et/ou refroidissement, y compris la récupération de chaleur du moteur.

Toplotna črpalka s plinsko gnanim motorjem z notranjim zgorevanjem - 5. del: Izračun sezonske zmogljivosti za ogrevanje in hlajenje

Ta evropski standard določa zahteve, preskusne metode in preskusne pogoje za ocenjevanje in izračun zmogljivosti klimatskih naprav in toplotnih črpalk, ki uporabljajo zrak, vodo ali slanico kot medij za prenos toplote, s kompresorji s plinsko gnanim motorjem z notranjim zgorevanjem, kadar se uporabljajo za segrevanje, ohlajanje in hlajenje, v nadaljevanju »naprava GEHP«.
Ta evropski standard se uporablja samo za naprave z največjo grelno močjo (na podlagi neto kalorične vrednosti), ki ne presega 70 kW pri standardnih pogojih za določanje moči.
Ta evropski standard se uporablja samo za naprave iz kategorij I2H, I2E, I2Er, I2R, I2E(S)B, I2L, I2LL, I2ELL, I2E(R)B, I2ESi, I2E(R), I3P, I3B, I3B/P, II2H3+, II2Er3+, II2H3B/P, II2L3B/P, II2E3B/P, II2ELL3B/P, II2L3P, II2H3P, II2E3P in II2Er3P v skladu s standardom EN 437.
Ta evropski standard se uporablja samo za naprave:
– s plinsko gnanimi motorji z notranjim zgorevanjem, ki jih nadzirajo povsem samodejni krmilni sistemi;
– s hladilnimi tokokrogi z zaprtim sistemom, pri katerih hladilno sredstvo ne pride v neposreden stik s tekočino, ki se ohlaja ali segreva;
– pri katerih temperatura tekočine za prenos toplote ogrevalnega sistema (ogrevalno vodovodno omrežje) pri običajnem delovanju ne presega 105 °C;
– pri katerih najvišji obratovalni tlak v:
– ogrevalnem vodovodnem omrežju (če je nameščeno) ne presega 6 barov;
– gospodinjskem ogrevalnem vodovodnem omrežju (če je nameščeno) ne presega 10 barov.
Ta evropski standard se uporablja za naprave samo, če se uporablja za segrevanje, ohlajanje ali hlajenje prostora z rekuperacijo toplote ali brez nje.
Ta evropski standard ne zajema naprav, katerih kondenzator se hladi z zrakom in izhlapevanjem zunanje dodatne vode.
Ta evropski standard zajema pakirane enote in sisteme z enim ali več razcepi. Ta evropski standard zajema enote z enojnim in dvojnim vodom.
Zgornje naprave imajo lahko eno ali več primarnih ali sekundarnih funkcij.
Ta evropski standard se uporablja za vse naprave, za katere se izvaja tipski preskus. Zahteve za naprave, za katere se ne izvaja tipski preskus, bi bilo treba dodatno proučiti.
Pri pakiranih enotah (sestavljenih iz več kosov) se ta evropski standard uporablja samo za tiste, ki so projektirane in dostavljene kot celoten paket.
OPOMBA Vsi simboli v tem besedilu se uporabljajo ne glede na uporabljeni jezik.

General Information

Status
Published
Publication Date
07-Mar-2017
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
08-Mar-2017
Completion Date
08-Mar-2017

Buy Standard

Standard
EN 16905-5:2018
English language
57 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Gasbefeuerte endothermische Motor-Wärmepumpen - Teil 5: Berechnung der saisonalen Effizienzkennzahlen im Heiz- und KühlmodusPompes à chaleur à moteur endothermique alimenté au gaz -Partie 5 : Calcul des performances saisonnières en modes chauffage et refroidissementGas-fired endothermic engine driven heat pumps - Part 5: Calculation of seasonal performances in heating and cooling mode27.080Heat pumpsICS:Ta slovenski standard je istoveten z:EN 16905-5:2017SIST EN 16905-5:2018en,fr,de01-januar-2018SIST EN 16905-5:2018SLOVENSKI

STANDARD
SIST EN 16905-5:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16905-5
March
t r s y ICS
t yä r z r English Version
Gasæfired endothermic engine driven heat pumps æ Part

wã Calculation of seasonal performances in heating and cooling mode Pompes à chaleur à moteur endothermique alimenté au gaz æPartie

w ã Calcul des performances saisonnières en modes chauffage et refroidissement
Gasbefeuerte endothermische MotoræWärmepumpen æ Teil

wã Berechnung der saisonalen Effizienzkennzahlen im Heizæ und Kühlmodus This European Standard was approved by CEN on

{ January
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 { r wæ wã t r s y ESIST EN 16905-5:2018

EN 16905-5:2017 (E) 2 Contents Page European foreword ....................................................................................................................................................... 4 1 Scope .................................................................................................................................................................... 5 1.1 Scope of EN 16905 series .............................................................................................................................. 5 1.2 Scope of EN 16905-5 ....................................................................................................................................... 5 2 Normative references .................................................................................................................................... 6 3 Terms and definitions ................................................................................................................................... 6 4 Part load conditions in cooling mode ...................................................................................................... 6 4.1 General ................................................................................................................................................................ 6 4.2 Air-to-air units ................................................................................................................................................. 6 4.3 Water-to-air and brine to air units ........................................................................................................... 6 4.4 Air-to-water units ........................................................................................................................................... 7 4.5 Water-to-water and brine-to-water units .............................................................................................. 8 5 Part load conditions in heating mode ...................................................................................................... 9 5.1 General ................................................................................................................................................................ 9 5.2 Air-to-air units .............................................................................................................................................. 10 5.3 Water-to-air units and brine to air units ............................................................................................. 12 5.4 Air-to-water units ........................................................................................................................................ 13 5.4.1 General ............................................................................................................................................................. 13 5.4.2 Low temperature application .................................................................................................................. 14 5.4.3 Medium temperature application .......................................................................................................... 17 5.4.4 High temperature application ................................................................................................................. 20 5.5 Water-to-water and brine-to-water units ........................................................................................... 23 5.5.1 General ............................................................................................................................................................. 23 5.5.2 Low temperature application .................................................................................................................. 23 5.5.3 Medium temperature application .......................................................................................................... 26 5.5.4 High temperature application ................................................................................................................. 29 6 Calculation methods for reference SPERc ........................................................................................... 31 6.1 General ............................................................................................................................................................. 31 6.2 General formula for calculation of GUEc and AEFc ............................................................................ 32 6.3 General formula for calculation of EHREgasc and EHREelecc ....................................................... 32 6.4 General formula for calculation of reference SGUEc ........................................................................ 32 6.5 Calculation of reference SAEFc ................................................................................................................ 33 6.6 Calculation of reference annual cooling demand (Qref,c) ................................................................ 33 6.7 Calculation of reference SAEFcON ............................................................................................................. 34 6.8 Calculation of reference SEHREgasc ....................................................................................................... 34 6.9 Calculation of reference SEHREelecc ..................................................................................................... 35 6.10 Procedures for the determination of GUEcPL / AEFcPL values ........................................................ 35 6.11 Procedures for the determination of EHREgascPL / EHREeleccPL values ................................... 35 6.12 Calculation of reference SPERc ................................................................................................................ 36 7 Calculation methods for reference SPERh ........................................................................................... 36 7.1 General ............................................................................................................................................................. 36 7.2 General formula for calculation of GUEh and AEFh ........................................................................... 36 7.3 General formula for calculation of EHREgash ..................................................................................... 36 7.4 General formula for calculation of reference SGUEh ....................................................................... 37 SIST EN 16905-5:2018

EN 16905-5:2017 (E) 3 7.5 Calculation of reference SAEFh ................................................................................................................. 39 7.6 Calculation of reference annual heating demand (Qrefh) ................................................................ 39 7.7 Calculation of reference SAEFhON ............................................................................................................. 40 7.8 Calculation of reference SEHREgash ....................................................................................................... 40 7.9 Calculation of reference SEHREelech ..................................................................................................... 41 7.10 Procedures for the determination of GUEhPL / AEFhPL values ........................................................ 41 7.11 Procedures for the determination of SEHREgashPL / SEHREelechPL values ............................... 41 7.12 Calculation of reference SPERh ................................................................................................................ 42 Annex A (normative)

Determination of reference annual cooling/heating demands and determination of hours for active mode, thermostat off, standby, off mode and crankcase heater mode for reference SAEFc and SAEFh calculation ........................................... 43 Annex B (informative)

Calculation example for reference SGUEc, SAEFc, SEHREgasc, SEHREelecc and SPERc ................................................................................................................................. 45 Annex C (informative)

Calculation example for reference SGUEh, SAEFh, SEHREgash, SEHREelech and SPERh ................................................................................................................................. 48 Annex D (informative)

Adaption of water temperature for fixed capacity .......................................... 51 Annex E (informative)

Compensation method for air to water and water to water units .............. 52 Annex ZA (informative)

Relationship between this European Standard and the ecodesign requirements of Commission Regulation (EU) No 813/2013 aimed to be covered ............. 53 Annex ZB (informative)

Relationship between this European Standard and the energy labelling requirements of Commission Delegated Regulation (EU) No 811/2013 aimed to be covered ..................................................................................................................................... 55 Bibliography ................................................................................................................................................................. 57

SIST EN 16905-5:2018

EN 16905-5:2017 (E) 4 European foreword This document (EN 16905-5:2017) has been prepared by Technical Committee CEN/TC 299 “Gas-fired sorption appliances, indirect fired sorption appliances, gas-fired endothermic engine heat pumps and domestic gas-fired washing and drying appliances”, the secretariat of which is held by UNI. 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 September 2017, and conflicting national standards shall be withdrawn at the latest by September 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 has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA and Annex ZB, which are integral parts of this document. This standard comprises the following parts under the general title, Gas-fired endothermic engine driven heat pumps: — Part 1: Terms and definitions; — Part 2: Safety (WI 00299025; currently in preparation); — Part 3: Test conditions; — Part 4: Test methods; — Part 5: Calculation of seasonal performances in heating and cooling mode. EN 16905-1, prEN 16905-2, EN 16905-3, EN 16905-4 and EN 16905-5 have been prepared to address the essential requirements of the European Directive 2009/142/EC relating to appliances burning gaseous fuels (see prEN 16905-2:201X, Annex ZA for safety aspects and EN 16905-5:2017, Annex ZA for rational use of energy aspects). These documents are linked to the Energy Related Products Directive (2009/125/EC) in terms of tests conditions, tests methods and seasonal performances calculation methods under Mandate M/535; (see EN 16905-3:2017, Annex ZA, EN 16905-4:2017, Annex ZA, EN 16905-5:2017, Annex ZA and prEN 16905-2:201X, Annex ZB). These documents will be reviewed whenever new mandates could apply. 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 16905-5:2018

EN 16905-5:2017 (E) 5 1 Scope 1.1 Scope of EN 16905 series This European Standard specifies the requirements, test methods and test conditions for the rating and performance calculation of air conditioners and heat pumps using either air, water or brine as heat transfer media, with gas-fired endothermic engine driven compressors when used for space heating, cooling and refrigeration, hereafter referred to as “GEHP appliance”. This European Standard only applies to appliances with a maximum heat input (based on net calorific value) not exceeding 70 kW at standard rating conditions. This European Standard only applies to appliances under categories I2H, I2E, I2Er, I2R, I2E(S)B, I2L, I2LL, I2ELL, I2E(R)B, I2ESi, I2E(R), I3P, I3B, I3B/P, II2H3+, II2Er3+, II2H3B/P, II2L3B/P, II2E3B/P, II2ELL3B/P, II2L3P, II2H3P, II2E3P and II2Er3P according to EN 437. This European Standard only applies to appliances having: a) gas fired endothermic engines under the control of fully automatic control systems; b) closed system refrigerant circuits in which the refrigerant does not come into direct contact with the fluid to be cooled or heated; c) where the temperature of the heat transfer fluid of the heating system (heating water circuit) does not exceed 105 °C during normal operation; d) where the maximum operating pressure in the: 1) heating water circuit (if installed) does not exceed 6 bar, 2) domestic hot water circuit (if installed) does not exceed 10 bar. This European Standard applies to appliances only when used for space heating or space cooling or for refrigeration, with or without heat recovery. The appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by this European Standard. Packaged units, single split and multisplit systems are covered by this European Standard. Single duct and double duct units are covered by this European Standard. The above appliances can have one or more primary or secondary functions. This European Standard is applicable to appliances that are intended to be type tested. Requirements for appliances that are not type tested would need to be subject to further consideration. In the case of packaged units (consisting of several parts), this European Standard applies only to those designed and supplied as a complete package. NOTE All the symbols given in this text are used regardless of the language used. 1.2 Scope of EN 16905-5 This part of the EN 16905 series specifies the calculation of seasonal performance factor for gas-fired endothermic engine driven heat pumps for heating and/or cooling mode including the engine heat recovery. SIST EN 16905-5:2018

EN 16905-5:2017 (E) 6 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 16905-1, Gas-fired endothermic engine driven heat pumps — Part 1: Terms and definitions EN 16905-4:2017, Gas-fired endothermic engine driven heat pumps — Part 4: Test methods 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 16905-1 apply. 4 Part load conditions in cooling mode 4.1 General For the purpose of calculation of application SGUEc, SAEFc, SEHREgasc, SEHREelecc and reference SGUEc, SAEFc, SEHREgasc, SEHREelecc as explained in Clauses 6 and 7, the part load ratios mentioned below shall be based on the part load ratio Formulae (1)st column of Tables 1 to 2) and not on the rounded figures as mentioned in the 2nd column of these tables. The calculation of SGUEc, SAEFc, SEHREgasc, SEHREelecc and reference SGUEc, SAEFc, SEHREgasc, SEHREelecc is determined via linear interpolation of the respective part load values at the reference part load conditions mentioned below (A, B, C, D). 4.2 Air-to-air units The part load conditions for determining the reference SGUEc (Formula (2)), SAEFc (Formula (4)), SEHREgasc (Formula (7)), SEHREelecc (Formula (8)) are given in the following table: Table 1 — Part load conditions of air to air units and air-cooled multisplit systems in cooling mode

Part load ratio Part load ratio % Outdoor air dry bulb temperature °C Indoor air dry bulb (wet bulb) temperatures °C A (35–16)/(Tdesignc-16) 100 35 27(19) B (30–16)/(Tdesignc-16) 74 30 27(19) C (25–16)/(Tdesignc-16) 47 25 27(19) D (20–16)/(Tdesignc-16) 21 20 27(19) 4.3 Water-to-air and brine to air units The part load conditions for determining the reference SGUEc (Formula (2)), SAEFc (Formula (4)), SEHREgasc (Formula (7)), SEHREelecc (Formula (8)) are given in the following table: SIST EN 16905-5:2018

EN 16905-5:2017 (E) 7 Table 2 — Part load conditions of water-to-air and brine-to-air units in cooling mode

Part load ratio Part load ratio % Outdoor heat exchanger Indoor heat exchanger Cooling tower b

or water loop application Inlet/outlet water temperatures °C Ground coupled application (water or brine) Inlet/outlet water temperatures °C Dry cooler application Inlet/outlet water temperatures °C Air dry bulb (wet bulb) temperatures °C A (35–16)/(Tdesignc-16) 100 30/35 10/15 50/45 27(19) B (30–16)/(Tdesignc-16) 74 26/a 10/a 45/a 27(19) C (25–16)/(Tdesignc-16) 47 22/a 10/a 40/a 27(19) D (20–16)/(Tdesignc-16) 21 18/a 10/a 35/a 27(19) a With the water flow rate as determined during the “A” test. b If a cooling tower and a water-to-air unit are sold as a matched assembly, they shall be tested as an air-to-air unit. 4.4 Air-to-water units For each application, units either allowing or not allowing a variation of the outlet water temperature with the outdoor temperature are considered. The variable outlet temperature shall only be applied when the control provides a regulation of outlet water temperature that considers the outdoor temperature. The part load conditions for determining the reference SGUEc (Formula (2)), SAEFc (Formula (4)), SEHREgasc (Formula (7)), SEHREelecc (Formula (8)) are given in the following table: SIST EN 16905-5:2018

EN 16905-5:2017 (E) 8 Table 3 — Part load conditions of air-to-water units in cooling mode

Part load ratio Part load ratio % Outdoor heat exchanger Indoor heat exchanger

Air dry bulb temperature °C Fan coil application Inlet/outlet water temperatures Cooling floor application Inlet/outlet water temperatures °C

Fixed outlet °C Variable outlet °C A (35–16)/(Tdesignc-16) 100 35 12/7 12/7 23/18 B (30–16)/(Tdesignc-16) 74 30 a/7 a/8,5 a/18 C (25–16)/(Tdesignc-16) 47 25 a/7 a/10 a/18 D (20–16)/(Tdesignc-16) 21 20 a/7 a/11,5 a/18 a With the water flow rate as determined during “A” test for units with a fixed water flow rate or with a fixed delta T of 5 K for units with a variable water flow rate. 4.5 Water-to-water and brine-to-water units For each application, units either allowing or not allowing a variation of the outlet water temperature with the outdoor temperature are considered. The variable outlet temperature shall only be applied when the control provides a regulation of outlet water temperature that considers the outdoor temperature. The part load conditions for determining the reference SGUEc (Formula (2)), SAEFc (Formula (4)), SEHREgasc (Formula (7)), SEHREelecc (Formula (8)) are given in the following table: SIST EN 16905-5:2018

EN 16905-5:2017 (E) 9 Table 4 — Part load conditions of water to-water units and brine to-water units in cooling mode

Part load ratio Part load ratio %
Outdoor heat exchanger Indoor heat exchanger

Cooling towerb application Inlet/outlet water temperatures °C Ground coupled application (water or brine) Inlet/outlet water temperatures °C Dry cooler application Inlet/outlet water temperatures °C Fan coil application Inlet/outlet water temperatures Cooling floor application Inlet/outlet water temperatures °C

Fixed outlet °C Variable outlet °C

A (35–1 6) / (Tdesignc-16) 100 30/35 10/15 50/45 12/7 12/7 23/18 B (30–1 6) / (Tdesignc-16) 74 26/a 10/a 45/a a/7 a/8,5 a/18 C (25–1 6) / (Tdesignc-16) 47 22/a 10/a 40/a a/7 a/10 a/18 D (20–1 6) / (Tdesignc-16) 21 18/a 10/a 35/a a/7 a/11,5 a/18 a With the water flow rate as determined during “A” test for units with a fixed water flow rate or with a fixed delta T of 5 K for units with a variable water flow rate. b If a cooling tower and water-to-air unit are sold as a matched assembly, they shall be tested as an air-to-air unit. 5 Part load conditions in heating mode 5.1 General For the purpose of calculation of application SGUEh, SAEFh, SEHREgash, SEHREelech and reference SGUEh, SAEFh, SEHREgash, SEHREelech the part load ratios mentioned below should be based on the part load ratio Formulae (1)st column of Tables 4 to 22) and not on the rounded figures as mentioned in the 2nd column of these tables. The calculation of SGUEh, SAEFh, SEHREgash, SEHREelech and reference SGUEh, SAEFh, SEHREgash, SEHREelech is determined via linear interpolation of the respective part load values at the reference part load conditions mentioned below (A, B, C, D). For the purpose of reference SGUEh, SAEFh, SEHREgash, SEHREelech there are three reference conditions: average(A), warmer (W) and colder (C). The relevant Tdesignh values are defined as follows: — Tdesign “average” dry bulb temperature conditions at

« 10

11 °C wet bulb) outdoor temperature and 20 °C indoor temperature; u Tdesign qcolderr dry bulb temperature conditions at

« 22

23 °C wet bulb) outdoor temperature and 20 °C indoor temperature u Tdesign qwarmerr dry bulb temperature conditions at + 2 °C (1 °C wet bulb) outdoor temperature and 20 °C indoor temperature SIST EN 16905-5:2018

EN 16905-5:2017 (E) 10 and the relevant Tbivalent is defined as follows: — for the average heating season, the dry bulb bivalent temperature is + 2 °C or lower; — for the colder heating seasoná the dry bulb bivalent temperature is

« 7 °C or lower; — for the warmer heating season, the dry bulb bivalent temperature is + 7 °C or lower. NOTE If the declared TOL is lower than the Tdesignh of the considered climate, then it is assumed that TOL is equal to Tdesignhä For Tbivalent and TOL higher or equal to

« 7 °C the wet bulb temperature equals the dry bulb temperature minus 1
¹Cä For Tbivalent and TOL below

« 7 °C, the wet bulb temperature is not defined. At any other part load conditions, the declared capacity of the appliance is larger than the building load. 5.2 Air-to-air units The part load conditions for determining the reference SGUEh (Formula (11)), SAEFh (Formula (13)), SEHREgash (Formula (16)), SEHREelech (Formula (17)) are given in the following tables: Table 5 — Part load conditions of air-to-air units and air-cooled multisplit systems in heating mode for the reference heating season “A” = average

A Outdoor air dry bulb (wet bulb) temperatures °C Indoor air dry bulb temperature °C

Part load ratio Part load ratio % A –16)/(Tdesignh-16) 88

« 20 B (+2–16)/(Tdesignh-16) 54 2(1) 20 C (+7–16)/(Tdesignh-16) 35 7(6) 20 D (+12–16)/(Tdesignh-16) 15 12(11) 20 E (TOL-16)/(Tdesignh-16) TOL 20 F (Tbivalent- Tbivalent 20 SIST EN 16905-5:2018

EN 16905-5:2017 (E) 11 Table 6 — Part load conditions of air-to-air units and air-cooled multisplit systems in heating mode for the reference heating season “W” = warmer

W Outdoor air dry bulb (wet bulb) temperatures °C Indoor air dry bulb temperature °C

Part load ratio Part load ratio %
A (not applicable)

B (+2–16)/(Tdesignh-16) 100 2(1) 20 C (+7–16)/(Tdesignh-16) 64 7(6) 20 D (+12–16)/(Tdesignh-16) 29 12(11) 20 E (TOL-16)/(Tdesignh-16) TOL 20 F (Tbivalent- Tbivalent 20 Table 7 — Part load conditions of air-to-air units and air-cooled multisplit systems in heating mode for the reference heating season “C” = colder

C Outdoor air dry bulb (wet bulb) temperatures °C Indoor air dry bulb temperature °C

Part load ratio Part load ratio %
A –16)/(Tdesignh-16) 61

« 20 B (+2–16)/(Tdesignh-16) 37 2(1) 20 C (+7–16)/(Tdesignh-16) 24 7(6) 20 D (+12–16)/(Tdesignh-16) 11 12(11) 20 E (TOL-16)/(Tdesignh-16) TOL 20 F (Tbivalent-16)/(Tdesignh-16) Tbivalent 20 Ga –16)/(Tdesignh-16) 82

«15 20 a Condition G is performed in case TOL is below
« t r °C. SIST EN 16905-5:2018

EN 16905-5:2017 (E) 12 5.3 Water-to-air units and brine to air units The part load conditions for determining the reference SGUEh (Formula (11)), SAEFh (Formula (13)), SEHREgash (Formula (16)), SEHREelech (Formula (17)) are given in the following tables: Table 8 — Part load conditions of water-to-air and brine-to-air units in heating mode for the reference heating season “A” = average

A Outdoor heat exchanger Indoor heat exchanger
Part load ratio Part load ratio %
Ground water Brine Indoor air

Inlet/outlet temperatures °C Inlet/outlet temperatures °C Inlet dry bulb temperature °C A –16)/(Tdesignh-16) 88 10/a 0/a 20 B (+2–16)/(Tdesignh-16) 54 10/a 0/a 20 C (+7–16)/(Tdesignh-16) 35 10/a 0/a 20 D (+12–16)/(Tdesignh-16) 15 10/a 0/a 20 F (Tbivalent-16)/(Tdesignh-16) 10/a 0/a 20 a The water flow rate as determined at the standard rating conditions.

Table 9 — Part load conditions of water-to-air and brine-to-air units in heating mode for the reference heating season “W” = warmer

W Outdoor heat exchanger Indoor heat exchanger

Part load ratio Part load ratio % Ground water Brine Indoor air Inlet/outlet temperatures °C Inlet/outlet temperatures ° C Indoor temperatures dry bulb °C A Not applicable

B (+2–16)/(Tdesignh-16) 100 10/a 0/a 20 C (+7–16)/(Tdesignh-16) 64 10/a 0/a 20 D (+12–16)/(Tdesignh-16) 29 10/a 0/a 20 F (Tbivalent-16)/(Tdesignh-16) 10/a 0/a 20 a The water flow rate as determined at the standard rating conditions of fixed capacity heat pumps. SIST EN 16905-5:2018

EN 16905-5:2017 (E) 13 Table 10 — Part load conditions of water-to-air and brine-to-air units in heating mode or the reference heating season “C” = colder

C Outdoor heat exchanger Indoor heat exchanger
Ground water Brine Indoor air

Part load ratio Part load ratio % Inlet/outlet temperatures °C Inlet/outlet temperatures ° C Indoor temperatures dry bulb °C A –16)/(Tdesignh-16) 61 10/a 0/a 20 B (+2–16)/(Tdesignh-16) 37 10/a 0/a 20 C (+7–16)/(Tdesignh-16) 24 10/a 0/a 20 D (+12–16)/(Tdesignh-16) 11 10/a 0/a 20 F (Tbivalent-16)/(Tdesignh-16) 10/a 0/a 20 a The water flow rate as determined at the standard rating conditions of fixed capacity heat pumps. 5.4 Air-to-water units 5.4.1 General For each application, units either allowing or not allowing a variation of the outlet water temperature with the outdoor temperature are considered. The variable outlet temperature shall only be applied when the control provides a regulation of outlet water temperature that considers the outdoor temperature. The part load conditions for determining the reference SGUEh (Formula (11)), SAEFh (Formula (13)), SEHREgash (Formula (16)), SEHREelech (Formula (17)) are given in the following tables. SIST EN 16905-5:2018

EN 16905-5:2017 (E) 14 5.4.2 Low temperature application Table 11 — Part load conditions of air-to-water units in heating mode, for low temperature application, for the reference heating season “A” = average

A Outdoor heat exchanger b Indoor heat exchanger
Part load ratio Part load ratio % Outdoor air Inlet/outlet temperatures
Inlet dry bulb

(wet bulb) temperature °C Fixed outlet °C Variable outlet °C A –16)/(Tdesignh-16) 88

« a /35 a /34 B (+2–16)/(Tdesignh-16) 54 2
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.