ASHRAE 63 2-2017 Method of Testing Liquid-Line Filter Drier Filtration Capability.pdf

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1、ANSI/ASHRAE Standard 63.2-2017(Supersedes ANSI/ASHRAE Standard 63.2-1996)Method of TestingLiquid-Line Filter DrierFiltration CapabilityApproved by ASHRAE on May 31, 2017, and by the American National Standards Institute on June 1, 2017.ASHRAE Standards are scheduled to be updated on a five-year cycl

2、e; 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. Telep

3、hone: 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. 2017 ASHRAE ISSN 1041-2336SPECIAL NOTEThis American National Standard (ANS) is a national voluntary consensus Standard developed under the auspices of AS

4、HRAE. 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 signifies the concurrence of more than a simple ma

5、jority,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 mandatory through legislation. ASHRAE obtains co

6、nsensus 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 Chair and Vice-Chair must be members of ASHRAE; w

7、hile 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 ASHRAE should be contacted fora. interpretation o

8、f 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 Standards and Guidelines for the benefit of the

9、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 Standards or Guidelines or that any tests conduct

10、ed 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 rating purposes, bysuggesting safe practices in de

11、signing 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 conformanceto them is completely voluntary.In referring

12、 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 63.2Cognizant TC: 3.3, Refrigerant Contaminant ControlSPLS Liaison: Peter SimmondsGlen L. Ste

13、inkoenig*, Chair Juan M. Flores* Christopher ReevesCorey Anderson* Zidu Ma* Stephen V. Spletzer*Michael D. Ditello* Julie Majurin* Scott S. Wujek* Denotes members of voting status when the document was approved for publicationASHRAE STANDARDS COMMITTEE 20162017Rita M. Harrold, Chair Michael W. Galla

14、gher Cyrus H. NasseriSteven J. Emmerich, Vice-Chair Walter T. Grondzik David RobinJames D. Aswegan Vinod P. Gupta Peter SimmondsNiels Bidstrup Susanna S. Hanson Dennis A. StankeDonald M. Brundage Roger L. Hedrick Wayne H. Stoppelmoor, Jr.Drury B. Crawley Rick M. Heiden Jack H. ZarourJohn F. Dunlap,

15、Srinivas Katipamula William F. Walter, BOD ExOJames W. Earley, Jr. Cesar L. Lim Patricia Graef, COKeith I. Emerson Arsen K. MelikovJulie M. Ferguson R. Lee Millies, Jr.Stephanie C. Reiniche, Senior Manager of Standards ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribu

16、tion, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.CONTENTSANSI/ASHRAE Standard 63.2-2017Method of Testing Liquid-Line Filter Drier Filtration CapabilitySECTION PAGEForeword .21 Purpose.22 Scope 23 Definitions24 Materials and Apparatus .25

17、 Test to Determine Accuracy of Test System.46 Procedure47 Calculation of Results5Informative Annex A: Sample Calculation.6Informative Annex B: Bibliography 7NOTEApproved addenda, errata, or interpretations for this standard can be downloaded free of charge from the ASHRAEwebsite at www.ashrae.org/te

18、chnology. 2017 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 of the American National Standards Institute. ASHRAE (

19、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.2 ANSI/ASHRAE Standard 63.2-2017(This foreword is not part of this standard. It is merelyinformative and does not c

20、ontain requirements necessaryfor conformance to the standard. It has not been pro-cessed according to the ANSI requirements for a standardand 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

21、 toappeal at ASHRAE or ANSI.)FOREWORDASHRAE Standard 63.2 prescribes a method for measuringthe filtration capability of liquid-line filters and filter driersfor use in refrigerant systems.It is recognized that the test contaminant, the test fluid,the test equipment, and the method in the prescribed

22、test donot fully represent the conditions that can exist in the liquidline of a refrigerant system. The specified test contaminant was chosen as the mostnearly representative controlled-particle-size test contami-nant commercially available. The wide range of controlledparticle sizes used provides a

23、 satisfactory degree of repeat-ability of test results. However, it is recognized that seldom, ifever, will the composition, particle size, and mix of the testcontaminant be duplicated in an actual system. Therefore, thefiltration capability of a filter determined by this test does notnecessarily pr

24、edict its exact capability in actual service in arefrigerant liquid line.This test, however, serves as a useful means of comparingfilter capabilities and implementing quality control to main-tain uniformity of products.Changes in the 2017 edition of the standard includeimprovements to the clarity of

25、 the test procedure and associ-ated calculations and the addition of test fluid options.1. PURPOSEThe purpose of this standard is to prescribe a laboratory testmethod for evaluating the filtration capability of filters andfilter driers used in liquid lines of refrigeration systems.2. SCOPE2.1 This l

26、aboratory test method evaluates the capability ofliquid-line filters and filter driers only for removing andretaining solid particles of a standard test contaminant.2.2 The test method may be applied to all hermetic refriger-ant liquid-line filters and filter driers. 2.3 The technique employed in th

27、is standard is the one-passtest method. In this test, a clean-up filter is installed down-stream of the test sample and is designed to retain and preventrecirculation of the majority of the contaminant particles thatare not collected by the test sample in the first pass.2.4 Filter driers have the ad

28、ded capability of removing andretaining certain dissolved contaminants. This standard doesnot provide measurement of this capability.3. DEFINITIONSclean-up filter loading (Mcf): mass in grams of test contami-nant that is retained on the clean-up filter. contaminant capacity (Mc): mass in grams of te

29、st contami-nant that is retained by the filter under test. contaminant loading (Mt): total mass in grams of test con-taminant that is added to the test apparatus.contaminant loading end point (Me): total mass in grams oftest contaminant added that achieved the target end-pointpressure dropend-point

30、pressure drop: the filter pressure drop across thefilter under test at the concluding point of the testing.filter efficiency (Ef): contaminant capacity divided by con-taminant loading, expressed as a percent.filter pressure drop (P): the difference in pressure betweenthe filter inlet and filter outl

31、et, including fittings, expressed inkilopascals.filter under test: liquid-line filter or liquid-line filter drier thatis under evaluation.liquid-line filter: a device for removing and retaining solidcontaminants from the liquid line of a refrigeration system.liquid-line filter drier: a filter contai

32、ning a desiccant capableof removing moisture and other dissolved contaminants in therefrigerant stream.test flow rate: the flow of clean test fluid, expressed in kilo-grams per second, that is specified for the filter under test.4. MATERIALS AND APPARATUS4.1 Test Contaminant4.1.1 Composition. The te

33、st contaminant will be a blend of50% coarse test dust as received and 50% retained in a 200-mesh screen. Prepare this blend from Society of AutomotiveEngineers (SAE) coarse test dust, described in ISO 5011. 4.1.2 Preparation of Test Contaminant. To prepare theblend of contaminant, first wet-screen a

34、 quantity of coarsetest dust on a U.S. (ASTM) or Tyler 200-mesh screen withparticle retention equal to 74 m (0.0029 in.). This is done byplacing a portion of the coarse test dust on a 200-mesh screenand running water through the screen while stirring the coarsetest dust with the fingers. Discard the

35、 fine particles passingthrough the screen.The +200-mesh particles collected on the screen areremoved and dried for one hour at 110C (230F). The testcontaminant is prepared by mixing 50% by mass of the coarsetest dust as received (after drying for one hour at 110C) with50% by mass of the +200-mesh-sc

36、reened dust.4.1.2.1 Particle Size Analysis. The coarse test dust asreceived and the blend used as the test contaminant have theparticle sizes listed in Table 1.4.2 Test Fluid. Permissible test fluids are shown in Table 2.Take appropriate steps to minimize evaporation or loss of testfluid during the

37、test procedure. 4.3 Clean-Up Filter. The clean-up filter shall be a filtermembrane of 0.8 m (3.15 105in.) pore size. The filter isused to determine the amount of contaminant that passedthrough the filter under test. ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distributio

38、n, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.ANSI/ASHRAE Standard 63.2-2017 34.4 Balance. A weighing method with less than or equal to0.1% resolution of the masses being weighed shall be usedduring the test procedure.4.5 Test Loop Speci

39、fication (see Figure 1)4.5.1 Pump. The pump shall be capable of producing asteady-state, nonpulsating flow able to maintain the standardflow rate through the filter being tested at pressure drops up to69 kPa (10 lbf/in.2).4.5.2 Heat Exchanger. A heat exchanger shall be provided(if necessary) to main

40、tain the test fluid at 30C 6C (86F 11F).4.5.3 Three-Way Flow Regulating Bypass Valve. A flowregulating bypass valve shall be provided in the test apparatusin order to vary and control the flow rate through the filterunder test. The three-way regulating bypass valve allows con-stant fluid flow to the

41、 filter under test with varying pressuredrop. This is accomplished by regulating the amount of fluidbeing directed back to the reservoir without passing throughthe filter under test. Controlling the flowrate by regulating thepump speed is an alternate method to bypass regulation.4.5.4 Reservoir. The

42、 reservoir shall be sized to maintain asuitable liquid level at the pump while the test apparatus isoperating. To avoid potential problems with contaminantTable 1 Test Contaminant Wt% in Various Size RangesParticle Size Range, m 0 to 5 5 to 10 10 to 20 20 to 40 40 to 80 80 to 200Wt % as received 12

43、12 14 23 30 9Wt % blend 667113238Table 2 Permissible Test FluidsChemical Formula C2Cl3F3C4F9OCH3C2H2F10ASHRAE or common name R-113 HFE 7100 HFC-4310meeBoiling point (C) 48 61 55Density 25C (g/mL) 1.56 1.52 1.58Figure 1 Schematic diagram, liquid pump test loop. ASHRAE (www.ashrae.org). For personal u

44、se only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.4 ANSI/ASHRAE Standard 63.2-2017settling out in the reservoir, the reservoir shall be providedwith a conical bottom outlet. The volume will be suc

45、h thatthe flow rate of the test fluid returning to the reservoir willcreate enough turbulence to prevent settling of the test con-taminant. The reservoir shall be designed to prevent the testcontaminant from settling out of the test fluid.4.5.5 Flowmeter. Methods of flow measurement aredescribed in

46、ANSI/ASHRAE Standard 41.7-2015, Method ofTest for Measurement of Flow of Gas. The meter shall be ofsuch construction, and installed in such a way, that undue tur-bulence or disturbances of the steady-state flow in the testapparatus are not created. The meter shall be calibrated sothat any error in i

47、ndicated flow is less than 5% of the nominalflow rate.4.5.6 Contaminant Loading Device. A contaminant load-ing device shall be installed with bypass valves upstream ofthe filter under test to permit the introduction of the test con-taminant into the test apparatus while in operation.4.5.7 Vent Valve

48、. A vent valve (solenoid valve optional)shall be located at the top of the test loop immediately aheadof the filter under test to permit the test fluid to drain freelyfrom the filter under test and the clean-up filter. Take appro-priate steps to recover the test fluid discharged from the ventvalve.4

49、.5.8 Sight Glasses. Sight glasses shall be installed in thetest apparatus allowing visual verification of single-phase liq-uid flow at the inlet and outlet of the filter under test.4.5.9 Differential Pressure Measuring Device. Amanometer or other pressure measuring device with a maxi-mum error of 0.3 kPa (0.04 lbf/in.2) shall be used to measurethe pressure drop across the filter under test. If a U-tubemanometer is used, the reading shall be corrected for theeffect of the test fluid column on top of the measuring fluid.The pressure taps shall b