ASHRAE 137-2013 Methods of Testing for Efficiency of Space-Conditioning Water Heating Appliances that Include a Desuperheater Water Heater.pdf

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1、ANSI/ASHRAE Standard 137-2013(Supersedes ANSI/ASHRAE Standard 137-2009)Methods of Testing forEfficiency of Space-Conditioning/WaterHeating Appliances thatInclude a DesuperheaterWater HeaterApproved by the ASHRAE Standards Committee on January 26, 2013; by the ASHRAE Board of Directors on January 29,

2、 2013;and by the American National Standards Institute on January 30, 2013.ASHRAE Standards are scheduled to be updated on a five-year cycle; the date following the standard number is the year ofASHRAE Board of Directors approval. The latest edition of an ASHRAE Standard may be purchased on the ASHR

3、AE Web site(www.ashrae.org) or from ASHRAE Customer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail:ordersashrae.org. Fax: 404-321-5478. Telephone: 404-636-8400 (worldwide) or toll free 1-800-527-4723 (for orders in US andCanada). For reprint permission, go to www.ashrae.org/permissi

4、ons. 2013 ASHRAE ISSN 1041-2336 ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.SPECIAL NOTEThis American National Standard (ANS) is a national voluntary c

5、onsensus standard developed under the auspices of ASHRAE.Consensus is defined by the American National Standards Institute (ANSI), of which ASHRAE is a member and which has approved thisstandard as an ANS, as “substantial agreement reached by directly and materially affected interest categories. Thi

6、s signifies the concurrenceof more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that aneffort be made toward their resolution.” Compliance with this standard is voluntary until and unless a legal jurisdiction makes complia

7、ncemandatory 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 ProjectCommittee

8、 Chair and Vice-Chair must be members of ASHRAE; while other committee members may or may not be ASHRAE members, allmust be technically qualified in the subject area of the Standard. Every effort is made to balance the concerned interests on all ProjectCommittees. The Manager of Standards of ASHRAE

9、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, ord. permission to reprint portions of the Standard.DISCLAIMERASHRAE uses its best efforts to promulgate Stand

10、ards and Guidelines for the benefit of the public in light of available information andaccepted industry practices. However, ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components,or systems tested, installed, or operated in accordance with ASHRAEs Standa

11、rds or Guidelines or that any tests conducted under itsStandards or Guidelines will be nonhazardous or free from risk.ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDSASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for ratingp

12、urposes, by suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providingother information that may serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them,and conformance t

13、o 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 stated or implied,that the product has been approved by ASHRAE.ASHRAE STANDARDS COMMITTEE 20122013Kenneth W. Cooper, Chair Julie M. Ferguson Janice

14、 C. PetersonWilliam F. Walter, Vice-Chair Krishnan Gowri Heather L. PlattDouglass S. Abramson Cecily M. Grzywacz Ira G. PostonKarim Amrane Richard L. Hall Douglas T. ReindlCharles S. Barnaby Rita M. Harrold James R. TaubyHoy R. Bohanon, Jr. Adam W. Hinge James K. VallortSteven F. Bruning Debra H. Ke

15、nnoy Craig P. WrayDavid R. Conover Jay A. Kohler Charles H. Culp, III, BOD ExOSteven J. Emmerich Rick A. Larson Constantinos A. Balaras, COMark P. ModeraStephanie C. Reiniche, Manager of StandardsASHRAE Standards Project Committee 137Cognizant TC 8.11, Unitary and Room Air Conditioners and Heat Pump

16、s*Denotes members of voting status when the document was approved for publication.Joseph A. Pietsch, Chair* Brian Philip Dougherty* Robert M. LittleCharles E. Bullock* Ben A. Elkin* Nance C. Lovvorn*John W. Clukey Victor W. Goldschmidt* Edwin A. Nordstrom*Robert E. Cook* Bradford F. Harris Wayne R.

17、Reedy*James Garrison Crawford John Michael Hill Herbert C. SkarbekRichard W. Dixon* Marshall B. Hunt Bodh R. SuberwahlPiotr Domanski Kerrin A. Kirkpatrick* Thomas I. Wetherington ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or

18、 digital form is not permitted without ASHRAEs prior written permission.CONTENTSANSI/ASHRAE Standard 137-2013,Methods of Testing for Efficiency of Space-Conditioning/Water-Heating Appliances that Include a Desuperheater Water HeaterSECTION PAGEForeword. 21 Purpose 22 Scope . 23 Definitions. 24 Nomen

19、clature . 35 Classifications. 76 Requirements . 77 Instrumentation Specifications 78 Apparatus . 89 Methods of Test 1810 Test Procedure . 2011 Calculations 3012 References . 37Informative Annex ASeasonal Annual Energy Consumption and Operation Costs for the Combined Appliance 37Informative Annex BSe

20、asonal and Annual Energy Consumption and Operating Costs for the Separate Heat Pump (or Air Conditioner) and Electric Water Heater of the Combined Appliance. 39Informative Annex CSeasonal and Annual Energy and Cost Credits for the Combined Appliance 40Informative Annex DCalculation of an Equivalent

21、Seasonal Energy Efficiency Ratio and an Equivalent Heating Seasonal Performance Factor or an Equivalent Energy Factor. 41Informative Annex EDetermination of Seasonal Combined Performance Factors for Installations Using a Separate Heat Pump (Air Conditioner) and an Electric Water Heater . 42NOTEAppro

22、ved addenda, errata, or interpretations for this standard can be downloaded free of charge from the ASHRAE Web site at www.ashrae.org/technology. 2013 ASHRAE1791 Tullie Circle NE Atlanta, GA 30329 www.ashrae.org All rights reserved.ASHRAE is a registered trademark of the American Society of Heating,

23、 Refrigerating and Air-Conditioning Engineers, Inc.ANSI is a registered trademark of the American National Standards Institute. ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prio

24、r written permission.2 ANSI/ASHRAE Standard 137-2013(This foreword is not a part of this standard. It ismerely informative and does not contain requirementsnecessary for conformance to the standard. It has notbeen processed according to the ANSI requirementsfor a standard and may contain material th

25、at has notbeen subject to public review or a consensus process.) FOREWORDThis is a revision of ANSI/ASHRAE Standard 137-2009.This standard was prepared under the auspices of theASHRAE. It may be used, in whole or in part, by an associa-tion or government agency with due credit to ASHRAE.Adherence is

26、 strictly on a voluntary basis and merely in theinterests of obtaining uniform standards throughout theindustry. The changes made for the 2013 revision were: The references were updated.Minor editorial changes were made.1. PURPOSE1.1 This standard provides test methods and calculationprocedures for

27、establishing the efficiencies of space-con-ditioning/water-heating appliances having refrigerant-to-water desuperheaters.1.2 The procedures may be used as a basis for establish-ing efficiency ratings for such equipment and for estimat-ing annual energy consumption.2. SCOPEThis standard covers electr

28、ic, air-to-air, space-condi-tioning appliances that include a refrigerant-to-water desu-perheater and have rated cooling capacities of less than65,000 Btu/h.3. DEFINITIONSactive system: a combined appliance that uses a pump tocirculate potable water, either at a varying or a fixed rate,between the d

29、esuperheater and the water heater.appliance: often used in this standard as a one-wordsubstitute for combined appliance, which is defined bined appliance: an assembly consisting of a heatpump or air conditioner, a desuperheater, a water heater,and, if required, a potable water pump; the assemblyprov

30、ides space conditioning and domestic hot bined performance factorcooling season (CPFcs):the seasonal coefficient of performance of the combinedappliance when used to meet both the space-cooling anddomestic water-heating loads that occur during the space-cooling season. The quantity is bined performa

31、nce factorheating season (CPFhs):the seasonal coefficient of performance of the combinedappliance when used to meet both the space-heating anddomestic water-heating loads that occur during the space-heating season. The quantity is bined performance factorwater-heating-only season(CPFws): the seasona

32、l coefficient of performance of thecombined appliance when used to meet the domestic water-heating load that occurs during the water-heating-only season(i.e., days during the year when no space conditioning isprovided). For combined appliances having a desuperheater,all water heating during this sea

33、son is performed by the waterheater resistive element(s). The quantity is bined space-cooling and water-heating (COOL the refrigerant-side additions and modifications thatare needed to couple the components are completed when thesystem is installed in the field. For active and passive systemswith fi

34、eld-installed desuperheaters, the water piping thatconnects the desuperheater and the water heater may becompleted either at the factory or when the system is installedin the field.heating seasonal performance factor (HSPF): for thespace-heating season, the ratio of the total space heatingdelivered

35、to the total electrical energy input if the combinedappliance operated exclusively in a space-heating-only(HEAT) mode. The quantity is expressed in units of Btu/Wh.insert system: a combined appliance where refrigeranttubing is inserted directly into the water heater, usuallythrough one of the ports

36、on the water heater; the insertedtubing is the desuperheater. ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.ANSI/ASHRAE Standard 137-2013 3manufacturer:

37、the supplier who provides the rating of thecombined appliance.passive system: a combined appliance that does not use awater pump but relies on thermosiphon flow through thedesuperheater and water heater; generally the desuperheater ismounted on the side of the water heater or at an elevation lowerth

38、an the water heater.piping: when used alone, refers strictly to water piping.seasonal energy efficiency ratio (SEER): for the coolingseason, the ratio of the total heat removed from the condi-tioned space to the total electrical energy input if the combinedappliance operated exclusively in a space-c

39、ooling-only(COOL) mode. The quantity is expressed in units of Btu/Wh.simulated-use test: a laboratory test where water draws areimposed on the water heater while the combined applianceprovides space conditioning and desuperheater water heatingover specified periods. The test is used to determine a r

40、epre-sentative inlet water temperature to the desuperheater for useduring tests of the water-heating mode and a laboratory basisfor the water heating contributed by the desuperheater versusthe water heater resistive elements.space-cooling-only (COOL) mode: an operating mode thatoccurs during space c

41、ooling when either the desuperheaterwater pump has automatically cycled off or the rate of heattransfer to the domestic water has become negligible. Withrespect to seasonal performance calculations, this modeoccurs when the water-heating load is satisfied but a space-cooling load remains. space-heat

42、ing-only (HEAT) mode: an operating mode thatoccurs during space heating when either the desuperheaterwater pump has automatically cycled off or the rate of heattransfer to the domestic water has become negligible. Withrespect to seasonal performance calculations, this modeoccurs when the water-heati

43、ng load is satisfied but a space-heating load remains or, if applicable, when operating belowthe combined (HEAT standard air conditioners(heat pumps) shall be used when testing a field-installed desu-perheater where an air conditioner (heat pump) is neithersupplied nor prescribed by the manufacturer

44、. standard heat pump: a heat pump meeting the specificationsgiven in Section 8.2.2; standard heat pumps (air conditioners)shall be used when testing a field-installed desuperheaterwhere a heat pump (air conditioner) is neither supplied norprescribed by the manufacturer. standard water heater: an ele

45、ctric water heater meeting thespecifications given in Section 8.2.3; a standard water heatershall be used when a water heater is neither supplied norprescribed by the manufacturer. standard water pump: a water pump meeting the specifica-tions given in Section 8.2.4; a standard water pump shall beuse

46、d when testing active systems where a water pump isneither supplied nor prescribed by the manufacturer.test condition tolerance: the maximum permissible vari-ation between the average of a measured quantity and thedesired test condition specified in the standard.test operating tolerance: the maximum

47、 amount that adesignated measured quantity shall vary (i.e, maximumminimum) during the entire or a specified interval of a test.test rooms: the two environmental chambers where allcomponents of the combined appliance are installed andtested; one chamber is used to maintain specified indoorambient co

48、nditions, while the second chamber is used tomaintain specified outdoor ambient conditions.tubing: when used alone, refers strictly to refrigerant tubing.Type A water-heating-mode tests: tests that are conductedusing the Type A test method and setup described inSection 10.7.1.Type B water-heating-mo

49、de tests: tests that are conductedusing the Type B test method and setup described inSection 10.7.2.water heater: an electric storage tank water heater.water-heating-mode tests: a series of laboratory tests fordetermining an average space-conditioning capacity, anaverage desuperheater water-heating capacity, and an aver-age electrical power input as a function of outdoor temper-ature for each combined space-conditioning and water-heating operating mode.4. NOMENCLATUREBL (tj) = the buildi