ASHRAE 33-2016 Methods of Testing Forced-Circulation Air-Cooling and Air-Heating Coils.pdf

《ASHRAE 33-2016 Methods of Testing Forced-Circulation Air-Cooling and Air-Heating Coils.pdf》由会员分享，可在线阅读，更多相关《ASHRAE 33-2016 Methods of Testing Forced-Circulation Air-Cooling and Air-Heating Coils.pdf（28页珍藏版）》请在麦多课文档分享上搜索。

1、ANSI/ASHRAE Standard 33-2016(Supersedes ANSI/ASHRAE Standard 33-2000)Methods of TestingForced-CirculationAir-Cooling andAir-Heating CoilsApproved by ASHRAE on March 31, 2016, and by the American National Standards Institute on April 1, 2016.ASHRAE Standards are scheduled to be updated on a five-year

2、 cycle; the date following the Standard number is the year ofASHRAE approval. The latest edition of an ASHRAE Standard may be purchased on the ASHRAE website (www.ashrae.org)or from ASHRAE Customer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail: ordersashrae.org. Fax: 678-539-2129.

3、Telephone: 404-636-8400 (worldwide) or toll free 1-800-527-4723 (for orders in US and Canada). For reprintpermission, go to www.ashrae.org/permissions. 2016 ASHRAE ISSN 1041-2336Includes test data forms available online.SPECIAL NOTEThis American National Standard (ANS) is a national voluntary consen

4、sus Standard developed under the auspices of ASHRAE. Consensus is definedby 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 materially affected interest categories. This sig

5、nifies the concurrence of more than a simple majority,but not necessarily unanimity. Consensus requires that all views and objections be considered, and that an effort be made toward their resolution.”Compliance with this Standard is voluntary until and unless a legal jurisdiction makes compliance m

6、andatory 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 Ch

7、air 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 Project Committees. The Senior Manager of Standards of AS

8、HRAE should be contacted fora. 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 S

9、tandards and Guidelines for the benefit of the public in light of available information and acceptedindustry practices. However, ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components, or systemstested, installed, or operated in accordance with ASHRAEs St

10、andards or Guidelines or that any tests conducted under its Standards or Guidelineswill 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 rat

11、ing purposes, bysuggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providing other informationthat may serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them, and conforma

12、nceto 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 Standard Project Committee 33Cognizant TC: 8.4, Air-to-Refrigerant Heat T

13、ransfer EquipmentSPLS Liaison: John A. Clark* Denotes members of voting status when the document was approved for publicationRam Narayanamurthy, Chair* Shaobo Jia* Josef SchmidtGary W. Price*Vice-Chair Michael Kaler Jerry SipesJose A. Perez-Galindo* Secretary Todd A. Michael Christopher StoneJohn E.

14、 Bade Kashif Nawaz Glenn WilsonHarold Dubensky Mary Opalka Lauren ZelinskiWilliam Burgess Fox* Brent PearceByron B. Hagan, Sr.* Kevin PeckASHRAE STANDARDS COMMITTEE 20152016Douglass T. Reindl, Chair Steven J. Emmerich Heather L. PlattRita M. Harrold, Vice-Chair Julie M. Ferguson David RobinJames D.

15、Aswegan Walter T. Grondzik Peter SimmondsNiels Bidstrup Roger L. Hedrick Dennis A. StankeDonald M. Brundage Srinivas Katipamula Wayne H. Stoppelmoor, Jr.John A. Clark Rick A. Larson Jack H. ZarourWaller S. Clements Lawrence C. Markel Julia A. Keen, BOD ExOJohn F. Dunlap Arsen K. Melikov James K. Val

16、lort, COJames W. Earley, Jr. Mark P. ModeraKeith I. Emerson Cyrus H. NasseriStephanie C. Reiniche, Senior Manager of StandardsCONTENTSANSI/ASHRAE Standard 33-2016,Methods of Testing Forced-Circulation Air-Cooling and Air-Heating CoilsSECTION PAGEForeword .21 Purpose.22 Scope23 Definitions .24 Coil C

17、lassification25 Symbols 46 Test Instruments and Calibration 57 Test Apparatus78 Methods of Testing139 Test Procedure1310 Data to be Recorded .1411 Calculations.1512 Reference Properties and Data.1713 Normative References.1814 Informative References .18Normative Annex A: Test Data (TD) Forms 19Normat

18、ive Annex B: Water-Side Pressure-Drop Measurement Procedure 20Normative Annex C: Method of Verification for Test-Stand Velocity and Temperature Uniformity .23Online Supporting Files: http:/www.ashrae.org/33-2016NOTEApproved addenda, errata, or interpretations for this standard can be downloaded free

19、 of charge from the ASHRAEwebsite at www.ashrae.org/technology. 2016 ASHRAE1791 Tullie Circle NE Atlanta, GA 30329 www.ashrae.org All rights reserved.ASHRAE is a registered trademark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.ANSI is a registered trademark

20、of the American National Standards Institute.2 ANSI/ASHRAE Standard 33-2016(This foreword is not part of this standard. It is merelyinformative and does not contain requirements necessaryfor conformance to the standard. It has not been pro-cessed according to the ANSI requirements for a standardand

21、may contain material that has not been subject topublic review or a consensus process. Unresolved objec-tors on informative material are not offered the right toappeal at ASHRAE or ANSI.)FOREWORDASHRAE Standard 33 presents a method of test for use inlaboratory testing of forced circulation air-heati

22、ng and air-cooling coils. The 2016 edition of this standard was updatedwith assistance from the members of the product subsectionForced Circulation Air-Cooling corresponds to Fain Figure II-I-3 of Fluid Meters: Their Theory and Application1H = coil face height, mm in.h = enthalpy, kJ/kg Btu/lb (when

23、 applied to air, kJ/(kg dry air) Btu/(lb dry air) hL= head loss through coil at average liquid density, m of liquid ft of liquid K = heat leakage constant, kW/C Btu/(hF)L = length, mm in.M = mass of water or aqueous glycol solution collected, kg lbN = number ofP = absolute pressure, kPa abs psia or

24、in. Hg abs*p = gauge pressure, kPa psi or in. Hg or in. water* p = difference in pressure, kPa psi or in. water or in. Hg* paSTD= standard air difference in pressure, kPa psi or in. water or in. Hg (standard air density = 1.204 kg/m30.075 lb/ft3), which approximates dry air density at 21.1C 70F and

25、101.325 kPa abs 14.696 psia, m3/s scfm QlSTD= standard fluid volumetric flow rate (standard water density = 998.927 kg/m362.361 lb/ft3), which approximates water density at 15.6C 60F and 101.325 kPa abs 14.696 psia, std. m3/s sgpmq = heat transfer capacity, kW Btu/h shf= continuous plate fin hole sp

26、acing across coil face, mm in.shr= continuous plate fin hole spacing in direction of airflow, mm in.stf= tube spacing across coil face, mm in.str= tube spacing in direction of airflow, mm in.SG = specific gravity, as in correcting for relative density of air-water vapor mixture = (dry air SG = 1.00)

27、, kg air-water vapor mixture/(kg dry water) lb air-water vapor mixture/(lb dry water) T = absolute temperature, K Rt = temperature, C F t = difference in temperature, K F (Note: in this use K = C)V = volume of refrigerant, water, or aqueous glycol solution collected or difference in volume meter rea

28、ding, m3ft3 Va= standard air face velocity, m/s fpm v = specific volume (for water or aqueous glycol mixture), m3/kg ft3/lbm W = humidity ratio of air-water vapor mixture, kg water vapor mixture/(kg dry water) lb water vapor mixture/(lb dry water) W = difference in air humidity ratio across dehumidi

29、fying coil, kg water vapor mixture/(kg dry water) lb water vapor mixture/(lb dry water) w = mass flow rate, kg/s lbm/h (for air, kg dry air/s lbm dry air/min) xl= composition by mass of fluid, %xr= mass fraction of volatile refrigerant vaporY = fin thickness, mm in.Z = time, s min = ratio of nozzle

30、throat diameter to hydraulic or actual inlet chamber diameter, DN/ Dc. (For noncircular inlet chambers, the hydraulic diameter, Dc , is equal to four times the cross-sectional area divided by the chamber perimeter.) = density (for water or aqueous glycol mixture), kg/m3lb/ft3 = air adiabatic expansi

31、on coefficient, nozzle; corresponds to Y in ASHRAE Standard 41.225.2 Subscriptsa. Numerical subscripts are used to define conditions at thefollowing locations:0 = entering liquid control device1 = entering coil, condenser, etc.* The dimensions for specific symbols are given on the Test Data(TD) form

32、s, which are available online at http:/www.ashrae.org/33-2016 .1 W+1W0.622-+-ANSI/ASHRAE Standard 33-2016 52 = leaving coil, condenser, etc.3 = air entering intake chamber4 = air leaving mixing chamber5 = average ambient air surrounding intake and mixing chambers24 = mixing chamber31 = intake chambe

33、rb. Letter subscripts are used to further identify the lettersymbols. They are:a = dry air (when used with h or w)= air-water vapor mixture (when used with p)b = barometricC = calibrated compressorc = chamber (when used with D)= condenser (when used with h, K, P, q, t, and t)= plate fin external col

34、lar (when used with L)= tube circuits (when used with N)d = plate fin depth in direction of airflowdb = dry-bulbe = outside edge of spiral finf = across coil face (when used with s)= coil face (when used with A)= outside diameter of spiral fin (when used with D)= fins in net finned tube length (when

35、 used with N)= plate fin length perpendicular to direction of tubes exposed to the airflow (when used with L)= plate fins of constant thickness (when used with Y)= saturated liquid (when applied to hr, tc, tr, and tv)g = saturated vapor (when used with hg1, hr, tc, tC, tr, tv, vr, and vv)h = holes i

36、n plate fini = inside tubel = single-phase fluid, i.e., water and aqueous glycol solution (when used with hl, M, P, p, t, t, w, x, Z, and )m = log mean area of condenser insulation (when used with A)= mean or average (when used with SG, tv, T, vv, W, and )ma = piezometer ring pressure measurement ap

37、paratusN = nozzlen = neutral diameter of crimped spiral fin (when used with D)= crimped spiral fin thickness at neutral diameter (when used with Y)o = outside tubep = tube passes per circuitr = fin root for spiral fins with constant metal area for heat flow (when used with Y)= refrigerant (when used

38、 with h, P, p, v, t, t, w, and x)= rows (in direction of airflow when used with N and s)rc = volatile refrigerant coil circuitrf = leaving volatile refrigerant flowmeterrh = volatile refrigerant coil suction headers = sensible (when used with q)= static (when used with P)sa = sensible (air side)sz =

39、 sensible (heating or cooling medium side)t = total (when used with q)= net finned tube (when used with L)= tubes (when used with N and s)ta = total (air side)ts = test setup (liquid pressure drop of coil and measurement apparatus)tz = total (cooling medium side)v = steamw = waterwb = wet-bulbWhere

40、no letter subscript follows cp, h, or t, these sym-bols designate air-water vapor mixture properties.5.3 Superscripts. Numerical superscripts denote the powerto which the number of a symbol is raised.6. TEST INSTRUMENTS AND CALIBRATION6.1 CalibrationMeasurements from the instruments shall be traceab

41、le toprimary or secondary standards calibrated by National Insti-tute of Standards and Technology (NIST) or to the BureauInternational des Poids et Mesures (BIPM) if a NationalMetrology Institue (NMI) other than NIST is used. The indi-cated corrections shall be applied to meet the required errorlimi

42、ts given in subsequent sections. Instruments shall be reca-librated on a regular schedule that is appropriate for eachinstrument, and calibration records shall be maintained. Allinstruments shall be applied in a manner that ensures compli-ance with the accuracy specified in the test plan.6.2 Tempera

43、ture Measuring Instruments6.2.1 Temperature and moist air properties measuringinstruments shall meet the requirements of ANSI/ASHRAEStandard 41.13and ANSI/ASHRAE Standard 41.6,4respec-tively.6 ANSI/ASHRAE Standard 33-20166.2.2 Temperature measurements shall be made with aninstrument or instrument sy

44、stem meeting the accuracy andprecision requirements in Section 6.2.3. 6.2.3 The accuracy of the temperature measuring instru-ments shall be:a. Air dry-bulb and wet-bulb temperatures, 0.06C 0.1Fb. Water or aqueous glycol solution temperatures, 0.06C0.1Fc. Volatile refrigerant temperatures, 0.06C 0.1F

45、d. All other temperatures, 0.3C 0.5F 6.2.4 In no case shall the smallest scale division of theinstrument exceed twice the specified precision. For example,if the specified accuracy is 0.06C 0.1F, the smallest scaledivision shall not exceed 0.1C 0.2F.6.2.5 Where an accuracy closer than 0.3C 0.5F issp

46、ecified, the temperature measuring instruments shall be cal-ibrated by comparison with a NIST-certified standard instru-ment in the range of use or shall itself be certified as toaccuracy.6.2.6 When air humidity is to be established by means ofdry-bulb and wet-bulb temperature measurements, it isimp

47、ortant that the instruments be matched. That is, theyshould indicate the same temperature when both are dry andin the same ambient or a correction shall be applied. Thisensures accurate determination of the wet-bulb temperature.The two temperature measuring instruments shall be closetogether in the

48、airstream so as to measure the same sample ofair. The air dry-bulb temperature measuring instrument shallbe mounted upstream or to one side of the air wet-bulb tem-perature measuring instrument so that its reading will not beinfluenced by evaporation of moisture from the wet bulb.6.2.6.1 Air humidit

49、y may also be measured using thedew-point temperature, per ASHRAE Standard 41.6.46.2.7 Air wet-bulb temperatures shall be read only underconditions that ensure an air velocity of 3.6 to 10.2 m/s700 to 2000 fpm preferably near 5.1 m/s 1000 fpm overthe wet bulb, and only after sufficient time has been allowedfor evaporative equilibrium to be attained.6.2.8 A suitable material for the wet-bulb wick is