EN 14511-1:2022

Air conditioners, liquid chilling packages and heat pumps for space heating and cooling and process chillers, with electrically driven compressors - Part 1: Terms and definitions

This document specifies the terms and definitions for the rating and performance of air conditioners, liquid chilling packages and heat pumps using either air, water or brine as heat transfer media, with electrically driven compressors when used for space heating and/or cooling.
It also specifies the terms and definitions for the rating and performance of process chillers.
This document does not apply to heat pumps for domestic hot water, although certain definitions can be applied to these.
This document applies to:
-   factory-made units that can be ducted,
-   factory-made liquid chilling packages with integral condensers or for use with remote condensers, and
-   air-to-air air conditioners which can also evaporate the condensate on the condenser side.
Packaged units, single split and multisplit systems are covered by this document. Single duct and double duct units are covered by this document, as well.
In the case of units consisting of several parts, this document applies only to those designed and supplied as a complete package, except for liquid chilling packages with remote condenser.
This document is primarily intended for water and brine chilling packages but can be used for other liquid subject to agreement.
The units having their condenser cooled by air and by the evaporation of external additional water will have their performance in the cooling mode determined in accordance to EN 15218. For those which can also operate in the heating mode, the EN 14511 series applies for the determination of their performance in the heating mode.
NOTE 1   Part load testing of units is dealt with in EN 14825.
NOTE 2   All the symbols given in this text are used regardless of the language.

Luftkonditionierer, Flüssigkeitskühlsätze und Wärmepumpen für die Raumbeheizung und -kühlung und Prozesskühler mit elektrisch angetriebenen Verdichtern - Teil 1: Begriffe

Dieses Dokument legt die Begriffe fest für die Einstufung und Leistung von Luftkonditionierern, Flüssigkeits¬kühlsätzen und Wärmepumpen, die Luft, Wasser oder Sole als Wärmeträger nutzen, mit elektrisch angetriebenen Verdichtern für die Raumbeheizung und/oder -kühlung.
Es legt außerdem die Begriffe für die Einstufung und Leistung von Prozesskühlern fest.
Dieses Dokument ist nicht anwendbar für Wärmepumpen zum Erwärmen von Brauchwasser, obwohl bestimmte Definitionen auf diese angewendet werden können.
Dieses Dokument ist anwendbar für:
—   werksseitig hergestellte Geräte, die mit Kanalanschlüssen versehen sein können;
—   werksseitig hergestellte Flüssigkeitskühlsätze mit eingebauten Verflüssigern oder für den Betrieb mit getrennt angeordneten Verflüssigern und
—   Luft-Luft-Luftkonditionierer, die das Kondensat auch auf der Verflüssigerseite verdampfen können.
Kompaktgeräte, Einzelgeräte in Split-Bauweise und Multi-Split-Systeme werden in diesem Dokument behandelt. Geräte mit Einkanal- und Zweikanal-Systemen werden ebenfalls in diesem Dokument behandelt.
Wenn die Geräte aus mehreren Teilen bestehen, ist dieses Dokument mit der Ausnahme von Flüssigkeitskühlsätzen mit getrennt angeordnetem Verflüssiger nur für solche anwendbar, die als vollständige Funktionseinheit konstruiert und geliefert werden.
Dieses Dokument ist hauptsächlich anwendbar für Wasser- und Solekühlsätze, kann jedoch nach Vereinbarung auf weitere Flüssigkeiten angewendet werden.
Die Leistung im Kühlbetrieb von Geräten, deren Verflüssiger durch Belüftung und durch Verdampfung von zusätzlichem, von außen zugeführtem Wasser gekühlt wird, wird nach EN 15218 ermittelt. Bei solchen Geräten, die auch im Heizbetrieb arbeiten können, ist EN 14511 für die Ermittlung der Leistung im Heizbetrieb anwendbar.
ANMERKUNG 1   Die Prüfung von Geräten unter Teillastbedingungen ist in EN 14825 festgelegt.
ANMERKUNG 2   Sämtliche in diesem Text enthaltenen Symbole werden unabhängig von der verwendeten Sprache verwendet.

Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur pour le chauffage et le refroidissement des locaux et refroidisseurs industriels avec compresseur entraîné par moteur électrique - Partie 1 : Termes et définitions

Le présent document spécifie les termes et définitions relatifs à la détermination des caractéristiques et des performances des climatiseurs, des groupes refroidisseurs de liquide et des pompes à chaleur utilisant l'air, l'eau ou l'eau glycolée comme fluide caloporteur, avec compresseur entraîné par moteur électrique, lorsqu'ils sont utilisés pour le chauffage et/ou le refroidissement des locaux.
Il spécifie également les termes et définitions relatifs à la détermination des caractéristiques et des performances des refroidisseurs industriels.
Le présent document ne s'applique pas spécifiquement aux pompes à chaleur utilisées pour l'eau chaude sanitaire, bien que certaines définitions puissent leur être applicables.
Le présent document s'applique :
-   aux appareils fabriqués en usine qui peuvent être raccordés ;
-   aux groupes refroidisseurs de liquide autonomes fabriqués en usine ou conçus pour être utilisés avec des condenseurs fournis séparément ; et
-   aux climatiseurs air/air qui peuvent également évaporer les condensats du côté condenseur.
Le présent document couvre les systèmes monoblocs, à deux éléments séparés et multisplit. Le présent document couvre également les appareils à simple et à double raccordement.
Dans le cas d'appareils à éléments séparés, le présent document ne s'applique qu'aux appareils conçus et fournis comme un ensemble, sauf pour ce qui concerne les groupes refroidisseurs de liquide avec condenseur séparé.
Le présent document est principalement destiné aux groupes refroidisseurs d'eau et d'eau glycolée mais peut être utilisé, après accord, pour d'autres liquides.
La performance en mode refroidissement des appareils ayant leur condenseur refroidi par air et par évaporation d'eau extérieure supplémentaire est déterminée conformément à l’EN 15218. Pour ceux qui peuvent également fonctionner en mode chauffage, la série des EN 14511 s’applique pour la détermination de leur performance en mode chauffage.
NOTE 1   Les essais à charge partielle des appareils sont traités dans l’EN 14825.
NOTE 2   Tous les symboles spécifiés dans le présent document sont utilisés quelle que soit la langue.

Klimatske naprave, enote za hlajenje kapljevine, toplotne črpalke za ogrevanje in hlajenje prostora ter procesne hladilne naprave z električnimi kompresorji - 1. del: Izrazi in definicije

Ta evropski standard določa izraze in definicije za ocenjevanje in delovanje klimatskih naprav, enot za hlajenje kapljevine in toplotnih črpalk, ki uporabljajo zrak, vodo ali slanico kot medij za prenos toplote, z električnimi kompresorji, kadar se uporabljajo za ogrevanje in/ali hlajenje prostora.
Določa tudi izraze in definicije za ocenjevanje in delovanje procesnih hladilnih naprav.
Ta evropski standard se ne uporablja za toplotne črpalke za gospodinjsko vročo vodo, čeprav se lahko za njih uporabljajo nekatere definicije.
Ta evropski standard se uporablja za:
–   tovarniško izdelane enote, ki jih je mogoče opremiti s kanali,
–   tovarniško izdelane enote za hlajenje kapljevine z vgrajenimi kondenzatorji ali za uporabo z oddaljenimi kondenzatorji,
–   tovarniško izdelane enote bodisi fiksne ali spremenljive zmogljivosti na kakršen koli način in
–   zračne klimatske naprave, ki lahko poskrbijo tudi za izhlapevanje kondenzata na strani kondenzatorja.
Ta standard zajema pakirane enote in sisteme z enim ali več razcepi. Ta standard zajema enote z enojnim in dvojnim jaškom.
Pri enotah, sestavljenih iz več kosov, se ta evropski standard uporablja samo za tiste, ki so zasnovane in dostavljene kot celoten paket, razen za enote za hlajenje kapljevine z oddaljenim kondenzatorjem.
Ta evropski standard je prvotno namenjen enotam za hlajenje z vodo in slanico, vendar se lahko po dogovoru uporablja tudi za druge tekočine.
Delovanje hlajenja pri enotah, ki kondenzator hladijo z zrakom in z izhlapevanjem zunanje dodatne vode, naj se določi v skladu s standardom EN 15218. Pri enotah, ki lahko delujejo tudi v načinu gretja, se skupina standardov EN 14511 uporablja za določevanje njihovega delovanja pri gretju.
OPOMBA 1:   Preskusi z delnimi obremenitvami enot so obravnavani v standardu EN 14825.
OPOMBA 2:   Vsi simboli v tem besedilu se uporabljajo ne glede na jezik.

General Information

• Status: Published
• Publication Date: 06-Sep-2022
• ICS: 01.040.27 - Energy and heat transfer engineering (Vocabularies)
• ICS: 01.040.91 - Construction materials and building (Vocabularies)
• ICS: 27.080 - Heat pumps
• ICS: 91.140.30 - Ventilation and air-conditioning systems
• Technical Committee: CEN/TC 113 - Heat pumps and air conditioning units
• Drafting Committee: CEN/TC 113/WG 8 - Revision of existing standards
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 07-Sep-2022
• Due Date: 11-Jan-2022
• Completion Date: 07-Sep-2022
• Directive: 2016/2281 - Commission Regulation (EU) 2016/2281 of 30 November 2016 implementing Directive 2009/125/EC of the European Parliament and of the Council establishing a framework for the setting of ecodesign requirements for energy-related products, with regard to ecodesign requirements for air heating products, cooling products, high temperature process chillers and fan coil units
• Directive: 206/2012 - Commission Regulation (EU) No 206/2012 of 6 March 2012 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for air conditioners and comfort fans
• Mandate: M/488 - Mandate to CEN, CENELEC and ETSI in the field of air conditioners and comfort fans
• Mandate: M/560 - [C(2019) 1725 final] Ecodesign requirements for air heating products, cooling products, high temperature process chillers and fan coils in support of Commission Regulation (EU) 2016/2281
• Ref Project: SIST EN 14511-1:2022 - Air conditioners, liquid chilling packages and heat pumps for space heating and cooling and process chillers, with electrically driven compressors - Part 1: Terms and definitions

Relations

• Replaces: EN 14511-1:2018 - Air conditioners, liquid chilling packages and heat pumps for space heating and cooling and process chillers, with electrically driven compressors - Part 1: Terms and definitions
• Effective Date: 31-Jul-2019

Overview

EN 14511-1:2022 is the CEN European standard (Part 1) that defines the terms and definitions used to rate and assess the performance of vapour-compression air conditioners, liquid chilling packages, heat pumps (electrically driven compressors) and process chillers. Published in 2022 and prepared by CEN/TC 113, this document sets the vocabulary and symbols for consistent performance rating, labelling and testing across factory-made units that use air, water or brine as the heat transfer medium.

Key points:

• Focus: standardized terminology for rating and performance (cooling capacity, heating capacity, COP, EER, etc.).
• Applies to packaged units, single-split and multisplit systems, single- and double-duct units, and factory-made liquid chilling packages (integral or remote condensers).
• Excludes heat pumps solely for domestic hot water (though some definitions may be applicable).

Key Topics

• Scope and applicability: which unit types and configurations are covered (ducted units, liquid chilling packages, air-to-air units that may evaporate condensate).
• Core definitions used in performance rating: cooling capacity, heating capacity, effective power input, COP, EER, latent/sensible capacities, heat recovery terms and heat transfer media (water, brine, air).
• Measurement-related terms: internal and available external static pressure, defrost mode/period, part-load references (note: part-load testing addressed in EN 14825).
• Unit denomination and symbols: standardized symbols, abbreviated terms and units to ensure multilingual consistency across test reports and specifications.
• Clarifications on special cases (e.g., units using evaporative condensers-cooling mode per EN 15218; heating mode under EN 14511 series).

Applications and Users

EN 14511-1:2022 is essential for:

• Manufacturers drafting technical datasheets and ensuring consistent product declarations.
• Test laboratories and certification bodies performing performance tests and compliance evaluations.
• HVAC engineers and specifiers writing procurement specs, system designs and performance comparisons.
• Regulators and energy labelling/ecodesign bodies aligning test and rating language with EU requirements.
• Facility managers and consultants interpreting performance data for selection and lifecycle analysis.

Using a common terminology reduces ambiguity in contracts, test reports and regulatory compliance for air conditioners, liquid chilling packages, heat pumps and process chillers.

Related Standards and Regulations

• EN 14511 (series) - Parts 2–4: test conditions, test methods, requirements
• EN 15218 - evaporative-condenser cooling mode ratings
• EN 14825 - part-load testing considerations
• Associated EU ecodesign and energy labelling regulations referenced in the EN 14511 foreword

Keywords: EN 14511-1:2022, air conditioners, liquid chilling packages, heat pumps, process chillers, terms and definitions, performance rating, COP, EER, water, brine, CEN.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2022
Nadomešča:
SIST EN 14511-1:2018
Klimatske naprave, enote za hlajenje kapljevine, toplotne črpalke za ogrevanje in
hlajenje prostora ter procesne hladilne naprave z električnimi kompresorji - 1. del:
Izrazi in definicije
Air conditioners, liquid chilling packages and heat pumps for space heating and cooling
and process chillers, with electrically driven compressors - Part 1: Terms and definitions
Luftkonditionierer, Flüssigkeitskühlsätze und Wärmepumpen für die Raumbeheizung und
-kühlung und Prozess-Kühler mit elektrisch angetriebenen Verdichtern - Teil 1: Begriffe
Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur pour le chauffage et
le refroidissement des locaux et refroidisseurs industriels avec compresseur entraîné par
moteur électrique - Partie 1 : Termes et définitions
Ta slovenski standard je istoveten z: EN 14511-1:2022
ICS:
01.040.23 Tekočinski sistemi in sestavni Fluid systems and
deli za splošno rabo (Slovarji) components for general use
(Vocabularies)
23.120 Zračniki. Vetrniki. Klimatske Ventilators. Fans. Air-
naprave conditioners
27.080 Toplotne črpalke Heat pumps
91.140.30 Prezračevalni in klimatski Ventilation and air-
sistemi conditioning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 14511-1
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2022
EUROPÄISCHE NORM
ICS 01.040.27; 01.040.91; 27.080; 91.140.30 Supersedes EN 14511-1:2018
English Version
Air conditioners, liquid chilling packages and heat pumps
for space heating and cooling and process chillers, with
electrically driven compressors - Part 1: Terms and
definitions
Climatiseurs, groupes refroidisseurs de liquide et Luftkonditionierer, Flüssigkeitskühlsätze und
pompes à chaleur pour le chauffage et le Wärmepumpen für die Raumbeheizung und -kühlung
refroidissement des locaux et refroidisseurs industriels und Prozess-Kühler mit elektrisch angetriebenen
avec compresseur entraîné par moteur électrique - Verdichtern - Teil 1: Begriffe
Partie 1 : Termes et définitions
This European Standard was approved by CEN on 10 July 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, 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, Türkiye and
United Kingdom.
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. EN 14511-1:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Symbols, abbreviated terms and units . 14
5 Denomination . 14
Index . 16
Bibliography . 17

European foreword
This document (EN 14511-1:2022) has been prepared by Technical Committee CEN/TC 113 “Heat pumps
and air conditioning units”, the secretariat of which is held by UNE.
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 March 2023, and conflicting national standards shall be
withdrawn at the latest by March 2023.
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 14511-1:2018.
The main changes compared with EN 14511-1:2018 are as follows:
— reorganization of definitions (in alphabetical order);
— deletion of Annex ZA on the relationship with Commission Regulation (EU) No 206/2012.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
This document has been prepared in the frame of:
— Commission Regulation (EU) No 206/2012 of 6 March 2012 implementing Directive 2009/125/EC
of the European Parliament and of the Council with regard to ecodesign requirements for air
conditioners and comfort fans;
— Commission Delegated Regulation (EU) No 626/2011 of 4 May 2011 supplementing Directive
2010/30/EU of the European Parliament and of the Council with regard to energy labelling of air
conditioners;
— Commission Regulation (EU) No 813/2013 of 2 August 2013 implementing Directive 2009/125/EC
of the European Parliament and of the Council with regard to ecodesign requirements for space
heaters and combination heaters;
— Commission Delegated Regulation (EU) No 811/2013 of 18 February 2013 supplementing Directive
2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of
space heaters, combination heaters, packages of space heater, temperature control and solar device
and packages of combination heater, temperature control and solar device;
— Commission Regulation (EU) 2015/1095 of 5 May 2015 implementing Directive 2009/125/EC of the
European Parliament and of the Council with regard to ecodesign requirements for professional
refrigerated storage cabinets, blast cabinets, condensing units and process chillers;
— Commission Regulation (EU) 2016/2281 of 30 November 2016 implementing Directive
2009/125/EC of the European Parliament and of the Council establishing a framework for the setting
of ecodesign requirements for energy-related products, with regard to ecodesign requirements for
air heating products, cooling products, high temperature process chillers and fan coil units.
EN 14511, Air conditioners, liquid chilling packages and heat pumps for space heating and cooling and
process chillers, with electrically driven compressors, currently comprises the following parts:
— Part 1: Terms and definitions;
— Part 2: Test conditions;
— Part 3: Test methods;
— Part 4: Requirements.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, 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, Türkiye and the United
Kingdom.
1 Scope
This document specifies the terms and definitions for the rating and performance of air conditioners,
liquid chilling packages and heat pumps using either air, water or brine as heat transfer media, with
electrically driven compressors when used for space heating and/or cooling.
It also specifies the terms and definitions for the rating and performance of process chillers.
This document does not apply to heat pumps for domestic hot water, although certain definitions can be
applied to these.
This document applies to:
— factory-made units that can be ducted,
— factory-made liquid chilling packages with integral condensers or for use with remote condensers,
and
— air-to-air air conditioners which can also evaporate the condensate on the condenser side.
Packaged units, single split and multisplit systems are covered by this document. Single duct and double
duct units are covered by this document, as well.
In the case of units consisting of several parts, this document applies only to those designed and supplied
as a complete package, except for liquid chilling packages with remote condenser.
This document is primarily intended for water and brine chilling packages but can be used for other liquid
subject to agreement.
The units having their condenser cooled by air and by the evaporation of external additional water will
have their performance in the cooling mode determined in accordance to EN 15218. For those which can
also operate in the heating mode, the EN 14511 series applies for the determination of their performance
in the heating mode.
NOTE 1 Part load testing of units is dealt with in EN 14825.
NOTE 2 All the symbols given in this text are used regardless of the language.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
air conditioner
device capable of cooling or heating, or both, indoor air, using a vapour compression cycle driven by an
electric compressor, including air conditioners that provide additional functionalities such as
dehumidification, air purification, ventilation or supplemental air heating by means of electric resistance
heating, as well as appliances that are using water (either condensate water that is formed on the
evaporator side or externally added water) for evaporation on the condenser, provided that the device is
also able to function without the use of additional water, using air only
Note 1 to entry: Appliances using additional external water are rated according to EN 15218.
3.2
application rating condition
rating condition which provides additional information on the performance of the unit within its
operating range, where applicable
3.3
available external static pressure difference
Δp
e
positive pressure difference measured between the air (or water) outlet section and the air (or water)
inlet section of the unit, which is available for overcoming the pressure drop of any additional ducted air
(or water) circuit
Note 1 to entry: Expressed in Pa.
3.4
brine
heat transfer medium that has a freezing point lower than the freezing point of water
3.5
close control air conditioner
air conditioner to satisfy the requirements of the process carried out in the air conditioned room
3.6
coefficient of performance
COP
ratio of the heating capacity to the effective power input of the unit
Note 1 to entry: Expressed in kW/kW.
3.7
comfort chiller
liquid chilling package whose indoor heat exchanger extracts heat from a water-based cooling system
designed to operate at leaving chilled water temperatures greater than or equal to 2° C
3.8
control cabinet air conditioner
air conditioner to satisfy the requirements of the control cabinet
3.9
cooling capacity
P
C
heat given off from the heat transfer medium to the unit per unit of time, corrected from any fan or pump
heat where applicable
Note 1 to entry: Expressed in kW.
Note 2 to entry: For air to air and water(brine) to air units, cooling capacity is the total cooling capacity i.e. sum
of latent and sensible cooling capacities.
3.10
defrost mode
state of the unit in the heating mode where the operation is modified in order to defrost the outdoor air
heat exchanger
3.11
defrost period
time for which the unit is in the defrost mode
3.12
double-duct air conditioner
air conditioner in which, during cooling (or heating), the condenser (or evaporator) intake air is
introduced from the outdoor environment to the unit by a duct and rejected to the outdoor environment
by a second duct, and which is placed wholly inside the space to be conditioned
3.13
dry motor pump
pump with a motor which is cooled by the ambient air
3.14
effective power input
P
E
average electrical power input of the unit within the defined interval of time, obtained from:
— power input for operation of the compressor and any power input for defrosting;
— power input for all control and safety devices of the unit;
— proportional power input of the conveying devices (e.g. fans, pumps) for ensuring the transport of
the heat transfer media inside the unit
Note 1 to entry: Expressed in kW.
3.15
energy efficiency ratio
EER
ratio of the total cooling capacity to the effective power input of the unit
Note 1 to entry: Expressed in kW/kW.
3.16
exhaust air
air from the air conditioned space entering the outdoor heat exchanger
3.17
glandless circulator
circulator with the rotor directly coupled to the impeller and the rotor immersed in the pumped medium
3.18
glide
difference between dew point temperature and bubble point temperature at a given pressure
Note 1 to entry: Expressed in K.
3.19
heat pump
encased assembly or assemblies designed as a unit, using a vapour compression cycle driven by an
electric compressor, to provide delivery of heat
Note 1 to entry: It can have means for cleaning and dehumidifying the air, circulating and cooling. The cooling is
by means of reversing the refrigerating cycle.
3.20
heat recovery
recovery of heat rejected by the unit whose primary control is in the cooling mode by means of either an
additional heat exchanger (e.g. a liquid chiller with an additional condenser) or by transferring the heat
through the refrigerating system for use to unit whose primary control remains in the heating mode (e.g.
variable refrigerant flow)
3.21
heat recovery capacity
P
HR
heat removed by the heat transfer medium of the heat recovery heat exchanger per unit of time, corrected
from any fan or pump heat where applicable
Note 1 to entry: This applies only to heat recovery liquid chilling packages.
Note 2 to entry: Expressed in kW.
3.22
heat recovery efficiency
HRE
ratio of the total capacity of the system (heating plus cooling capacity) to the effective power input when
operating in the heat recovery mode
Note 1 to entry: Expressed in kW/kW.
3.23
heat recovery heat exchanger
heat exchanger assembly which is designed to transfer heat to the heat recovery medium
3.24
heat recovery liquid chilling package
factory-made liquid chilling package designed for the purpose of chilling liquid and recovering of heat
3.25
heat rejection capacity
heat removed by the heat transfer medium of the condenser per unit of time, corrected from any fan or
pump heat where applicable
Note 1 to entry: This applies only to heat recovery liquid chilling packages.
Note 2 to entry: Expressed in kW.
3.26
heat transfer medium
fluid (water, brine, air.) used for the transfer of the heat without change of state
EXAMPLES Examples are cooled liquid circulating in the evaporator; cooling medium circulating in the
condenser; heat recovery medium circulating in the heat recovery heat exchanger.
3.27
heating capacity
P
H
heat given off by the unit to the heat transfer medium per unit of time, corrected from any fan or pump
heat where applicable
Note 1 to entry: If heat is removed from the indoor heat exchanger for defrosting, it is taken into account.
Note 2 to entry: Expressed in kW.
3.28
high temperatu
...