1、ASHRAE STANDARDAmerican Society of Heating, Refrigeratingand Air-Conditioning Engineers, Inc.1791 Tullie Circle NE, Atlanta, GA 30329www.ashrae.orgWater-source heat pumpstesting and rating for performancePart 2: Water-to-water andbrine-to-water heat pumpsANSI/ARI/ASHRAE ISO Standard 13256-2:1998Appr
2、oved by ARI on August 10, 2001; by the ASHRAE Standards Committee on March 20, 2002; by the ASHRAEBoard of Directors on July 3, 2003; and by the American National Standards Institute on August 15, 2003.ASHRAE Standards are scheduled to be updated on a five-year cycle; the date following the standard
3、 number isthe year of ASHRAE Board of Directors approval. The latest copies may be purchased from ASHRAE CustomerService, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail: ordersashrae.org. Fax: 404-321-5478. Tele-phone: 404-636-8400 (worldwide) or toll free 1-800-527-4723 (for orders in U.S.
4、and Canada). ISO 1998 ASHRAE, ARI 2005ISSN 1041-2336When addenda or interpretations to this standard have been approved, they can be downloaded free of chargefrom the ASHRAE Web site at http:/www.ashrae.org/template/TechnologyLinkLanding/category/1631 orhttp:/www.ashrae.org/template/TechnologyLinkLa
5、nding/category/1686.Copyright ASHRAE Provided by IHS under license with ASHRAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SPECIAL NOTEThis American National Standard (ANS) is a national voluntary consensus standard developed under the auspices of the American S
6、ocietyof Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). Consensus is defined by the American National Standards Institute (ANSI),of which ASHRAE is a member and which has approved this standard as an ANS, as “substantial agreement reached by directly and materiallyaffected interest
7、categories. This signifies the concurrence of more than a simple majority, but not necessarily unanimity. Consensus requiresthat all views and objections be considered, and that an effort be made toward their resolution.” Compliance with this standard is voluntary untiland unless a legal jurisdictio
8、n makes compliance mandatory through legislation.ASHRAE obtains consensus through participation of its national and international members, associated societies, and public review.ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. The
9、ProjectCommittee Chair and Vice-Chair must be members of ASHRAE; while other committee members may or may not be ASHRAE members, all mustbe technically qualified in the subject area of the Standard. Every effort is made to balance the concerned interests on all Project Committees. The Manager of Sta
10、ndards of ASHRAE should be contacted for:a. interpretation of the contents of this Standard,b. participation in the next review of the Standard,c. offering constructive criticism for improving the Standard,d. permission to reprint portions of the Standard.ARI SAFETY DISCLAIMERARI does not set safety
11、 standards and does not certify or guarantee the safety of any products, components or systems designed,rested, rated, installed or operated in accordance with this standard/guideline. It is strongly recommended that products be designed,constructed, assembled, installed and operated in accordance w
12、ith nationally recognized safety standards and code requirementsappropriate for products covered by this standard/guideline.ARI uses its best efforsts to develop standards/guidelines employing state-of-the-art and accepted industry practices. ARI does notcertify or guarantee that any tests conducted
13、 under its standards/guidelines will be non-hazardous or free from risk.ASHRAE DISCLAIMERASHRAE uses its best efforts to promulgate Standards and Guidelines for the benefit of the public in light of available informationand accepted industry practices. However, ASHRAE does not guarantee, certify, or
14、 assure the safety or performance of anyproducts, components, or systems tested, installed, or operated in accordance with ASHRAEs Standards or Guidelines or that anytests conducted under its Standards or Guidelines will be nonhazardous or free from risk.ASHRAE INDUSTRIAL ADVERTISING POLICY ON STAND
15、ARDSASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for rating purposes, by suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providing other information
16、 that may serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them, and conformance to them is completely voluntary.In referring to this Standard or Guideline and in marking of equipment and in advertising, no claim shall be made, either statedo
17、r implied, that the product has been approved by ASHRAE.Copyright ASHRAE Provided by IHS under license with ASHRAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CONTENTSANSI/ARI/ASHRAE ISO Standard 13256-2Water-Source Heat PumpsTesting and Rating for PerformancePa
18、rt 2: Water-to-Water and Brine-to-Water Heat PumpsThis standard is an identical adoption of the ISO standard.SECTION PAGEForeword. 2Introduction . 21 Scope . 22 Normative Reference 23 Definitions. 24 Rating and Test Conditions. 35 Performance Requirements 56 Test Methods 67 Marking Provisions . 88 P
19、ublication of Ratings. 9Normative Annex A:Test Procedures . 9Normative Annex B:Liquid Enthalpy Test Method 9Informative Annex C:Instrumentation and Measurements 10Informative Annex D:Bibliography 11 ISO 1998 ASHRAE 2005 ARI 2005American Society of Heating,International Organization for Standardizati
20、on Refrigerating and Air-Conditioning Engineers, Inc. Air-Conditioning and Refrigeration Institute1, rue de Varemb, Case postale 56 1791 Tullie Circle NE 4100 N. Fairfax Drive, Suite 200CH-1211 Geneva 20, Switzerland Atlanta, GA 30329 Arlington, VA 22203www.iso.org www.ashrae.org www.ari.orgAll righ
21、ts reserved. All rights reserved. All rights reserved.Copyright ASHRAE Provided by IHS under license with ASHRAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright ASHRAE Provided by IHS under license with ASHRAENot for ResaleNo reproduction or networking per
22、mitted without license from IHS-,-,-ForewordISO (the International Organization for Standardization)is a worldwide federation of national standards bodies (ISOmember bodies). The work of preparing International Stan-dards is normally carried out through ISO technical commit-tees. Each member body in
23、terested in a subject for which atechnical committee has been established has the right to berepresented on that committee. International organizations,governmental and non-governmental, in liaison with ISO, alsotake part in the work. ISO collaborates closely with the Inter-national Electrotechnical
24、 Commission (IEC) on all matters ofelectrotechnical standardization.Draft International Standards adopted by the technicalcommittees are circulated to the member bodies for voting.Publication as an International Standard requires approval byat least 75% of the member bodies casting a vote.This part
25、of ISO 13256 was developed by ISO TechnicalCommittee TC 86, Refrigeration, Subcommittee SC 6, Testingand rating of air-conditioners and heat pumps.ISO 13256 consists of the following parts, under the gen-eral title Water-source heat pumpsTesting and rating forperformance:Part 1: Water-to-air and bri
26、ne-to-air heat pumps Part 2: Water-to-water and brine-to-water heat pumpsAnnexes A and B form an integral part of this part ofISO 13256. Annexes C and D are for information only.IntroductionThis part of ISO 13256 covers heating and coolingsystems which are generally referred to as “water-source heat
27、pumps.” These systems generally include an indoor coil withair-moving means, a compressor, and a refrigerant-to-water orrefrigerant-to-brine heat exchanger. A system may provideboth heating and cooling, cooling-only, or heating-only func-tions.1. Scope1.1 This part of ISO 13256 establishes performan
28、ce testingand rating criteria for factory-made residential, commercialand industrial, electrically driven, mechanical-compressiontype, water-to-water and brine-to-water heat pumps. Therequirements for testing and rating contained in this part ofISO 13256 are based on the use of matched assemblies.1.
29、2 Equipment designed for rating at one application underthis part of ISO 13256 may not be suitable for rating at allapplications covered in this part of ISO 13256.1.3 This part of ISO 13256 does not apply to the testing andrating of individual assemblies for separate use or to unitshaving two or mor
30、e indoor sections connected to a single out-door section. It does not apply to heat pumps covered in ISO5151, ISO 13253, or ISO 13256-1.Note: For the purpose of the remaining clauses, the terms“equipment” or “heat pump” may be used to mean “water-to-water heat pumps” or brine-to-water heat pumps,” a
31、nd theterm “liquid” refers to either “water” or “brine.”2. Normative referenceThe following standard contains provisions which,through reference in this text, constitute provisions of this partof ISO 13256. At the time of publication, the edition indicatedwas valid. All standards are subject to revi
32、sion, and parties toagreements based on this part of ISO 13256 are encouraged toinvestigate the possibility of applying the most recent editionof the standard indicated below. Members of IEC and ISOmaintain registers of currently valid International Standards.ISO 817:2005, Refrigerants Designation s
33、ystem.3. DefinitionsFor the purposes of this part of ISO 13256, the followingdefinitions apply.3.1 water-to-water and brine-to-water heat pumpheat pump which consists of one or more factory-madeassemblies which normally include an indoor-side refrigerant-to-water heat exchanger, compressor(s), and a
34、n outdoor-siderefrigerant-to-water or refrigerant-to-brine heat exchanger(s),including means to indirectly provide both cooling and heat-ing, cooling-only, or heating-only functionsNotes1. When such equipment is provided in more than one assem-bly, the separated assemblies should be designed to be u
35、sedtogether.2. Such equipment may also provide functions for sanitarywater heating.3.1.1 water-loop-heat pump applicationWater-to-water heat pump using liquid circulating in acommon piping loop functioning as a heat source/heat sink.NoteThe temperature of the liquid loop is usually mechani-cally con
36、trolled within a temperature range of 15C to 40C.3.1.2 ground-water heat pump applicationWater-to-water heat pump using water pumped from awell, lake or stream functioning as a heat source/heat sinkNoteThe temperature of the water is related to the climaticconditions and may vary from 5C to 25C for
37、deep wells.3.1.3 ground-loop heat pump applicationbrine-to-water heat pump using a brine solution circulat-ing through a subsurface piping loop functioning as a heatsource/heat sinkNotes1. The heat exchange loop may be placed in horizontaltrenches or vertical bores, or be submerged in a body ofsurfa
38、ce water. 2. The temperature of the brine is related to the climatic condi-tions and may vary from 5C to 40C.2 ANSI/ARI/ASHRAE ISO Standard 13256-2:1998Copyright ASHRAE Provided by IHS under license with ASHRAENot for ResaleNo reproduction or networking permitted without license from IHS3.2 cooling
39、capacityamount of heat that the equipment can remove from thewater used to condition the indoor space in a defined intervalof time, in watts, as determined by the specified test methods3.3 net cooling capacitycooling capacity with indoor-side pump power adjust-ment (See 4.1.2.)3.4 heating capacityam
40、ount of heat that the equipment can add to the waterused to condition the indoor space in a defined interval of time,in watts, as determined by the specified test methods3.5 net heating capacityheating capacity with indoor-side pump power adjust-ment (See 4.1.2.)3.6 rated voltagevoltage shown on the
41、 nameplate of the equipment, in volts3.7 rated frequencyfrequency shown on the nameplate of the equipment, inhertz3.8 energy efficiency ratio (EER)ratio of the net cooling capacity to the effective powerinput at any given set of rating conditions, in watts per watt.3.9 coefficient of performance (CO
42、P)ratio of the net heating capacity to the effective powerinput of the equipment at any given set of rating conditions, inwatts per watt3.10 effective power inputaverage electrical power input to the equipment within adefined interval of time, in watts; i.e., the sum of: the power input for operatio
43、n of the compressor exclud-ing additional electrical heating devices, the power input of all control and safety devices of theequipment, and the proportional power input of the conveying devicesfor the transport of the heat transfer media through theheat pump only (e.g., indoor-side and outdoor-side
44、pumps, whether internal or external, whether providedwith the equipment or not) (See 4.1.2 and 4.1.3.)4. Rating and test conditions4.1 Rating conditions for the determination of capacity4.1.1 Standard ratingsStandard ratings shall be established at the standard ratingconditions specified in 4.2, usi
45、ng the test procedures describedin clause 6. Standard ratings relating to cooling and heatingcapacities shall be net values, including the effects of the circu-lating-pump heat, but not including supplementary heat. Stan-dard efficiency ratings shall be based on the effective powerinput as defined i
46、n 3.10.4.1.2 Power input to indoor-side liquid pumps4.1.2.1 If no indoor-side liquid pump is provided withthe heat pump, a pump power adjustment is to be included inthe effective power consumed by the heat pump using the fol-lowing formula:wherepaiis the pump power adjustment, indoor, in watts; = 0.
47、3 103by convention;p is the measured indoor-side internal static pressuredifference, in pascals;q is the nominal indoor-side liquid flow rate, in litres persecond.This value shall be added to the heating capacity andsubtracted from the cooling capacity.4.1.2.2 If an indoor-side liquid pump is an int
48、egral partof the heat pump, only the portion of the pump power requiredto overcome the internal resistance shall be included in theeffective power input to the heat pump. The fraction which isto be excluded from the total power consumed by the pumpshall be calculated using the following formula:wher
49、epaiis the pump power adjustment, indoor, in watts; = 0.3 103by convention;p is the measured indoor-side external static pressuredifference, in pascals;q is the nominal indoor-side liquid flow rate, in litres persecond.This value shall be subtracted from the heating capacityand added to the cooling capacity.4.1.3 Power input to outdoor-side liquid pumps4.1.3.1 If no outdoor-side liquid pump is provided withthe heat pump, a pump power adjustment is to be included int
