BS ISO 13612-2-2014 Heating and cooling systems in buildings Method for calculation of the system performance and system design for heat pump systems Energy calculation《建筑物内供暖和制冷系统.pdf

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1、BSI Standards Publication BS ISO 13612-2:2014 Heating and cooling systems in buildings Method for calculation of the system performance and system design for heat pump systems Part 2: Energy calculationBS ISO 13612-2:2014 BRITISH STANDARD National foreword This British Standard is the UK implementat

2、ion of ISO 13612-2:2014. The UK participation in its preparation was entrusted to Technical Committee RHE/2, Ventilation for buildings, heating and hot water services. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport

3、 to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 75219 3 ICS 27.080; 91.040.01 Compliance with a British Standard cannot confer immunity from legal

4、 obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2014. Amendments issued since publication Date Text affectedBS ISO 13612-2:2014 ISO 2014 Heating and cooling systems in buildings Method for calculation of the system perfor

5、mance and system design for heat pump systems Part 2: Energy calculation Systmes de chauffage et de refroissement dans les btiments Mthode de calcul de la performance du systme et de la conception du systme pour les systmes de pompes chaleur Partie 2: Calcul nergtique INTERNATIONAL STANDARD ISO 1361

6、2-2 First edition 2014-05-01 Reference number ISO 13612-2:2014(E)BS ISO 13612-2:2014ISO 13612-2:2014(E)ii ISO 2014 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any for

7、m or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56

8、 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in SwitzerlandBS ISO 13612-2:2014ISO 13612-2:2014(E) ISO 2014 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 T erms and definitio

9、ns . 2 4 Symbols and abbreviated terms . 7 5 Principle of the method . 9 5.1 Flowchart of the calculation method . 9 5.2 System boundary .13 5.3 Physical factors 13 5.4 Schematization of the heat pump for heating and cooling 14 5.5 Input and output of the calculation method .16 5.6 Energy input need

10、ed to meet the heat requirements for electrically driven heat pumps 16 5.7 Auxiliary energy, W HW,gen,aux. 17 5.8 Recoverable, recovered, and unrecoverable heat losses 17 5.9 Calculation periods.18 5.10 Calculation by zones 18 6 Generation subsystem calculation 19 6.1 Input data .19 6.2 Energy requi

11、rements for space heating, space cooling, and DHW mode 20 6.3 Tabulated values of the COP for heating and cooling at full load .20 6.4 Heat losses through the generator envelope .20 6.5 Calculation of back-up heater22 6.6 Running time of the heat pump .24 6.7 Auxiliary energy 32 6.8 Total losses and

12、 total recoverable heat loss of the generation subsystem .33 6.9 Calculation of total energy input 35 6.10 Summary of output values .40 Annex A (informative) Construction of COP matrix with a single test result 41 Annex B (informative) Calculation of the COP based on interpolation of values 51 Annex

13、 C (informative) Calculation of heat pump COP and thermal capacities at part load conditions 57 Annex D (informative) Model of heat pump in the BEST program .65 Annex E (informative) Energy evaluation for other kinds of heat pumps (“CO 2heat pump water heater” and “air-conditioner and water heater c

14、ombined systems”) 97 Bibliography .115BS ISO 13612-2:2014ISO 13612-2:2014(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO

15、 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates cl

16、osely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteri

17、a needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of p

18、atent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name u

19、sed in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical

20、Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 205, Building environment design. ISO 13612 consists of the following parts, under the general title Heating and cooling systems in buildings Method for calculati

21、on of the system performance and system design for heat pump systems: Part 1: Design and dimensioning Part 2: Energy calculationiv ISO 2014 All rights reservedBS ISO 13612-2:2014ISO 13612-2:2014(E) Introduction This International Standard is a part of a series of standards on the methods for calcula

22、tion of heating system energy requirements and heating and cooling system efficiencies. ISO 13612-1 deals with design and sizing of heat pump systems. ISO 13612-2 presents the energy calculation method. The energy performance can be assessed by determining either the heat generation subsystem effici

23、encies or the heat generation subsystem losses due to the system configuration. This part of ISO 13612 presents methods for calculation of the additional energy requirements of a heat generation subsystem in order to meet the distribution subsystem demand. The calculation is based on the performance

24、 characteristics of the products given in product standards and on other characteristics required to evaluate the performance of the products as included in the system. Product data, e.g. heating capacity or COP of the heat pump, is determined according to products standards. This method can be used

25、 for the following applications: judging compliance with regulations expressed in terms of energy targets; optimization of the energy performance of a planned heat generation subsystem, by applying the method to several possible options; assessing the effect of possible energy conservation measures

26、on an existing heating/cooling generation subsystem, by calculating the energy use with and without the energy conservation measure. Only the calculation method is normative. The user shall refer to other standards or to national documents for input data. Additional values necessary to complete the

27、calculations are to be given in a national annex; if no national annex is available, default values are given in an informative annex where appropriate. NOTE The results of this method can be used to assess the energy performance of the heating/cooling system when summing up the results over a perio

28、d of calculation. ISO 2014 All rights reserved vBS ISO 13612-2:2014BS ISO 13612-2:2014Heating and cooling systems in buildings Method for calculation of the system performance and system design for heat pump systems Part 2: Energy calculation 1 Scope This International Standard is applicable to heat

29、 pumps for space heating and cooling, heat pump water heaters (HPWH), and heat pumps with combined space heating and/or cooling and domestic hot water production, in alternate or simultaneous operation, where the same heat pump is used for space heating and domestic hot water heating. This part of I

30、SO 13612 provides a calculation method under steady conditions that corresponds to one calculation step. The results of this calculation are incorporated in larger building models and take into account the influence of the external conditions and building control that influence the energy requiremen

31、ts for heating and cooling supplied by the heat pump system. This part of ISO 13612 specifies the required inputs, calculation methods, and required outputs for output thermal power generation for space heating and cooling and domestic hot water production of the following heat pump systems, includi

32、ng control: 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 distribution listed in Table 1. Table 1 Heating/cooling sourc

33、es and energy distribution Source Distribution Outdoor air Air Exhaust-air Water Indirect ground source with brine distribution Direct condensation/evaporation of the refrigerant in the appliance (VRF) Indirect ground source with water distribution Direct ground source Direct expansion (DX) Surface

34、water Ground water 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 (

35、including any amendments) applies. INTERNATIONAL ST ANDARD ISO 13612-2:2014(E) ISO 2014 All rights reserved 1BS ISO 13612-2:2014ISO 13612-2:2014(E) EN ISO 7345:1995, Thermal insulation Physical quantities and definitions ISO 13612-1, Heating and cooling systems in buildings Method for calculation of

36、 the system performance and system design for heat pump systems Part 1: Design and dimensioning ISO 13675, Heating systems in buildings Method and design for calculation of the system energy performance Combustion systems (boilers) ISO 13790, Energy performance of buildings Calculation of energy use

37、 for space heating and cooling ISO/TR 16344, Energy performance of buildings Common terms, definitions and symbols for the overall energy performance rating and certification 3 T erms a nd definiti ons For the purposes of this document, the terms and definitions in ISO 13612-1, EN ISO 7345:1995, and

38、 ISO/TR 16344 and the following apply. 3.1 alternate operation production of heat energy for the space heating and domestic hot water system by a heat generator with double service by switching the heat generator either to the domestic hot water operation or the space heating operation 3.2 applicati

39、on rating conditions mandatory rated conditions within the operating range of the unit that are published by the manufacturer or supplier 3.3 auxiliary energy electrical energy used by technical building systems for heating, cooling, ventilation, and/or domestic water to support energy transformatio

40、n to satisfy energy needs Note 1 to entry: This includes energy for fans, pumps, electronics, etc. Electrical energy input to a ventilation system for air transport and heat recovery is not considered as auxiliary energy, but as energy use for ventilation. Note 2 to entry: In EN ISO 9488, the energy

41、 used for pumps and valves is called “parasitic energy”. Note 3 to entry: In the frame of this part of ISO 13612, the driving energy input for electrically driven heat pumps in the system boundary of the COP and an electrical back-up heater is not considered auxiliary energy but only additional elec

42、trical input not considered in the COP. 3.4 balance point temperature temperature at which the heat pump heating capacity and the building heat load are equal 3.5 bin statistical temperature class (sometimes a class interval) for the outdoor air temperature Note 1 to entry: The class limits are expr

43、essed in a temperature unit. 3.6 building service service provided by technical building systems and by appliances to provide indoor climate conditions, domestic hot water, illumination levels, and other services related to the use of the building2 ISO 2014 All rights reservedBS ISO 13612-2:2014ISO

44、13612-2:2014(E) 3.7 calculation period period of time over which the calculation is performed Note 1 to entry: The calculation period can be divided into a number of calculation steps. 3.8 calculation step discrete time interval for the calculation of the energy needs and uses for heating, cooling,

45、humidification, and dehumidification Note 1 to entry: Typical discrete time intervals are 1 h, 1 mon, or one heating and/or cooling season, operating modes, and bins. Note 2 to entry: In the frame of the bin method, calculation steps are based on outdoor temperature classes. 3.9 c o e f f i c i e n

46、t o f p e r f o r m a n c e COP ratio of the heating/cooling capacity to the effective power input of the unit 3.10 cumulative frequency frequency of the outdoor air temperature cumulated over all 1 K bins 3.11 cut-out period time period in which the electricity supply to the heat pump is interrupte

47、d by the supplying utility 3.12 domestic hot water heating process of heat supply to raise the temperature of the cold water to the intended delivery temperature 3.13 effective power input average power input of the unit within the defined interval of time obtained from the power input for operation

48、 of the compressor or burner and any power input for defrosting, the power input for all control and safety devices of the unit, and the proportional power input of the conveying devices (e.g. fans, pumps) for ensuring the transport of the heat transfer media inside the unit 3.14 electrically driven

49、 heat pump vapour compression cycle heat pump which incorporates a compressor driven by an electric motor 3.15 energy need for domestic hot water heat to be delivered to the needed amount of domestic hot water to raise its temperature from the cold network temperature to the prefixed delivery temperature at the delivery point, not taking into account the technical building thermal systems 3.16 energy need for heating or cooling heat to be delivered to or extracted from a conditioned space to

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