EN 15450-2007 en Heating systems in buildings - Design of heat pump heating systems《建筑物加热系统 热泵加热系统的设计》.pdf

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1、BRITISH STANDARDBS EN 15450:2007Heating systems in buildings Design of heat pump heating systemsThe European Standard EN 15450:2007 has the status of a British StandardICS 27.080g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g5

2、4g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 15450:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2007 BSI 2007ISBN 978 0 580 56385 0National forewordThis British Standard is the UK impl

3、ementation of EN 15450:2007. The UK participation in its preparation was entrusted to Technical Committee RHE/24, Central heating installations.Throughout this standard, the term tapping patterns is used to describe the draw-off demands on Domestic Hot Water supply systems. In the UK, the term deman

4、d profile has similar meaning and is more commonly used.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Complia

5、nce with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 15450October 2007ICS 27.080English VersionHeating systems in buildings - Design of heat pump heatingsystemsSystmes de c

6、hauffage dans les btiments - Conceptiondes systmes de chauffage par pompe chaleurHeizungsanlagen in Gebuden - Planung vonHeizungsanlagen mit WrmepumpenThis European Standard was approved by CEN on 26 August 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulat

7、e the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists

8、 in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies

9、 of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN

10、 COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15450:2007: EEN 15450:2007 (E) 2 Co

11、ntents Page Foreword4 Introduction .5 1 Scope 6 2 Normative references 7 3 Terms, definitions and symbols.7 3.1 Terms and definitions .7 3.2 Symbols, units and abbreviations .9 4 System design requirements10 4.1 General10 4.1.1 Basic consideration.10 4.1.2 Heat source 10 4.1.3 Electrical supply 13 4

12、.1.4 Strategy.13 4.1.5 Positioning .14 4.1.6 Noise level 14 4.2 Heat supply.15 4.3 Additional backup heater15 4.4 Domestic hot water production or other attached systems16 4.4.1 Hot water demand16 4.4.2 Heat pump data16 4.4.3 Sizing (heat pump capacity, DHW storage volume, auxiliary source capacity)

13、16 4.4.4 Specific control requirement for DHW production.19 4.4.5 Other specifications 19 4.5 Hydraulic integration.20 4.6 Control of the system20 4.7 Safety arrangements .20 4.8 Operational requirements .20 4.8.1 General20 4.8.2 Provisions for monitoring operational conditions (e.g. temperature, po

14、wer consumption).20 5 Installation requirements 21 6 Commissioning of the system21 6.1 Overview.21 6.2 Preparation of commissioning.22 6.2.1 Heat distribution circuit 22 6.2.2 Ground loop .22 6.2.3 Filling and venting .22 6.2.4 Switch box and electrical wiring 22 6.3 Commissioning23 6.3.1 Functional

15、 performance tests 23 6.3.2 Operation performance tests23 6.3.3 Balancing24 6.4 Handing over24 Annex A (informative) Guidelines for determining design parameters .25 A.1 Design parameters for heat pumps using water as a heat source.25 A.1.1 Water quality 25 A.1.2 Water temperature .25 A.1.3 Water qu

16、antity25 A.2 Design parameters for heat pumps using ground as a heat source25 EN 15450:2007 (E) 3 A.2.1 General .25 A.2.2 Ground temperature26 A.2.3 Heat extraction rates .26 A.2.4 Vertical bore heat exchanger .27 Annex B (informative) Standard hydraulic circuits .30 Annex C (normative) Calculation

17、and requirements for Seasonal Performance Factors (SPF) 36 C.1 Definitions 36 C.2 Calculations .36 C.3 Minimum and target SPF-values for heat pumps.37 Annex D (informative) Noise levels in the vicinity.39 Annex E (informative) Average daily tapping patterns for domestic hot water production .40 E.1

18、Average daily tapping patterns40 E.2 Example calculation44 Annex F (informative) Capacity control 45 F.1 General control strategy.45 F.2 Capacity control of the heat pump 45 F.3 Enhanced Cycle Systems.46 Bibliography47 EN 15450:2007 (E) 4 Foreword This document (EN 15450:2007) has been prepared by T

19、echnical Committee CEN/TC 228 “Heating systems in buildings”, the secretariat of which is held by DS. 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 April 2008, and conflicting national standards

20、 shall be withdrawn at the latest by April 2008. The subjects covered by CEN/TC 228 are the following: - design of heating systems (water based, electrical etc.); - installation of heating systems; - commissioning of heating systems; - instructions for operation, maintenance and use of heating syste

21、ms; - methods for calculation of the design heat loss and heat loads; - methods for calculation of the energy performance of heating systems. Heating systems also include the effect of attached systems such as hot water production systems. All these standards are systems standards, i.e. they are bas

22、ed on requirements addressed to the system as a whole and not dealing with requirements to the products within the system. Where possible, reference is made to other European or International Standards, a.o. product standards. However, use of products complying with relevant product standards is no

23、guarantee of compliance with the system requirements. The requirements are mainly expressed as functional requirements, i.e. requirements dealing with the function of the system and not specifying shape, material, dimensions or the like. The guidelines describe ways to meet the requirements, but oth

24、er ways to fulfil the functional requirements might be used if fulfilment can be proved. Heating systems differ among the member countries due to climate, traditions and national regulations. In some cases requirements are given as classes so national or individual needs may be accommodated. In case

25、s where the standards contradict with national regulations, the latter should be followed. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Repub

26、lic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 15450:2007 (E) 5 Introduction This standard provides

27、design criteria for heating systems with integrated heat pump systems with respect to: heat source; electrical supply; strategy; positioning; noise level; heat supply; sizing. Energy performance design criteria are dealt with in another document of this technical committee. EN 15450:2007 (E) 6 1 Sco

28、pe This standard specifies design criteria for heating systems in buildings using electrically driven heat pumps alone or in combination with other heat generators. Heat pump systems considered include (see Table 1): water water; water air; brine water; refrigerant water (direct expansion systems);

29、refrigerant refrigerant; air air; air water. This standard takes into account the heating requirements of attached systems (e.g. domestic hot water) in the design of heat supply, but does not cover the design of these systems. This standard covers only the aspects dealing with the heat pump, the int

30、erface with the heat distribution system and heat emission system (e.g. buffering system), the control of the whole system and the aspects dealing with energy source of the system. Systems designed primarily for cooling and systems which can operate simultaneously in cooling and heating mode are not

31、 within the scope of this standard. Table 1 Heat pump systems (within the scope) source-system (energy extraction) sink-system (energy rejection) energy source amedium bmedium energy sinkcair indoor airexhaust air outdoor air air water indoor air water water indoor air water surface water ground wat

32、er water air indoor airair indoor airbrine (water) water indoor air water water indoor air water ground refrigerant refrigerant indoor airaEnergy source is the location where the energy is extracted. bMedium is the fluid transported in the corresponding distribution system. cEnergy sink is the locat

33、ion where the energy is used; this can be the heated space or water in case of domestic hot water production. EN 15450:2007 (E) 7 2 Normative references The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. Fo

34、r undated references, the latest edition of the referenced document (including any amendments) applies. EN 378-1, Refrigerating systems and heat pumps Safety and environmental requirements Part 1: Basic requirements, definitions, classification and selection criteria EN 12828:2003, Heating systems i

35、n buildings Design for water-based heating systems EN 12831, Heating systems in buildings - Method for calculation of the design heat load EN 14336, Heating systems in buildings Installation and commissioning of water based heating systems EN 14511-1:2004, Air conditioners, liquid chilling packages

36、and heat pumps with electrically driven compressors for space heating and cooling Part 1: Terms and definitions prEN 15316-4-2, Heating systems in buildings - Method for calculation of system energy requirements and system efficiencies - Part 4-2: Space heating generation systems, heat pump systems

37、3 Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12828:2003 and the following apply. 3.1.1 coefficient of performance (COP) ratio of the heating capacity to the effective power input of the unit, expressed in Watt/Wat

38、t EN 14511-1:2004 3.1.2 seasonal performance factor (SPF) ratio of the total annual energy QHPdelivered by the heat pump to the distribution subsystem for space heating and/or other attached systems (e.g. domestic hot water) to the total annual input of electrical energy consumed, including the tota

39、l annual input of auxiliary energy NOTE See also Annex C. 3.1.3 balance point temperature lowest design external air temperature at which the heat pump output capacity and the building heating demand (heat load) are equal NOTE At lower external air temperatures, a second heat generator is employed t

40、o cover the entire or part of the building heating demand. 3.1.4 bivalent-alternative mode operational mode in which a second heat generator (e.g. gas boiler) completely accounts for the heat demand of the heating system if the external temperature falls below the balance point temperature EN 15450:

41、2007 (E) 8 3.1.5 bivalent-parallel mode operational mode in which a second heat generator (e.g. gas boiler) accounts for the remaining heat demand of the heating system, which cannot be supplied by the heat pump when the external temperature falls below the balance point temperature 3.1.6 monovalent

42、 mode operational mode in which the heat pump is designed to cover the entire heat demand of the heating system alone NOTE The heat pump output capacity is at least equal to the design heat load calculated according to EN 12831. 3.1.7 backup heater supplementary heating which is used to supply heat

43、when the capacity of the heat pump is inadequate EN 15450:2007 (E) 9 3.2 Symbols, units and abbreviations For the purposes of this document, the following symbols and units (Table 2) and abbreviations (Table 3) apply. Table 2 Symbols and units Symbol Description Unit Cih Effective internal heating c

44、apacity of the building elements Wh/mK COPsetcoefficient of performance of the heat pump for domestic hot water demand at the set buffer storage temperature set fAS design factor for attached systems fDHW design factor for domestic hot water systems fHL design factor for the heat load hp,el,setelect

45、rical power of the heat pump for domestic hot water demand at setkW Peleffective electrical power input kW Q energykWh Qdailytotal hot water energy demand per day kWh QSenergy stored in the buffer storage kWh QDPenergy demand during the defined period kWh Ql,sheat losses of the buffer storage in a d

46、efined time period kWh Qs,effeffective (useful) amount of energy in the buffer storage kWh ql,sspecific daily thermal losses of the buffer storage kWh/(24hl) tDPduration of the defined period h tEnergy,HPduration of period when energy is available for the heat pump h VSvolume of buffer storage l VDP

47、60volume delivered during the defined period at 60 C l Vl,svolume amounting to the thermal losses of the buffer storage l Vsetvolume of hot water at setthat has the same enthalpy as QDP L ASheating capacity of attached systems kW DHWheating capacity of the heat pump for domestic hot water use kW HLh

48、eat load capacity kW hp,setheating capacity of the heat pump at setkW hpheating capacity of the heat pump kW SUheating capacity of the heat supply system kW thermal conductivity W/(mK) CWinlet temperature (cold water) C DPsetset point for temperature in the buffer storage C edesign external air temp

49、erature C m,elocal mean external air temperature C minminimum value for domestic hot water draught off C setset temperature C EN 15450:2007 (E) 10 Table 3 Abbreviations Abbreviation Description COP coefficient of performance DHW domestic hot water GWP global warming potential ODP ozone depletion potential SPF seasonal performance factor 4 System design requirements 4.1 General 4.1.1 Basic consideration The heating system shall be designed according to the requirements st