1、ASHRAE STANDARDANSI/ASHRAE Standard 63.2-1996 (RA 2010)(Reaffirmation of ANSI/ASHRAE Standard 63.2-1996 RA 2006)Method of Testing Liquid-Line Filter Drier Filtration CapabilityApproved by the ASHRAE Standards Committee on June 26, 1996, and reaffirmed on June 26, 2010;approved by the ASHRAE Board of
2、 Directors on June 27, 1996, and reaffirmed on June 30, 2010; andapproved by the American National Standards Institute on September 6, 1996, and reaffirmed on July 1, 2010. ASHRAE Standards are scheduled to be updated on a five-year cycle; the date following the standard numberis the year of ASHRAE
3、Board of Directors approval. The latest edition of an ASHRAE Standard may be pur-chased on the ASHRAE 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
4、 1-800-527-4723 (for orders in US and Canada). For reprint permission, go towww.ashrae.org/permissions. Copyright 2010 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.ISSN 1041-2336American Society of Heating, Refrigeratingand Air-Conditioning Engineers, Inc.1791 Tulli
5、e Circle NE, Atlanta, GA 30329www.ashrae.orgASHRAE STANDARDS COMMITTEE 20092010Steven T. Bushby, ChairH. Michael Newman, Vice-ChairDouglass S. AbramsonRobert G. BakerMichael F. BedaHoy R. Bohanon, Jr.Kenneth W. CooperK. William DeanMartin DieryckxAllan B. FraserNadar R. JayaramanByron W. JonesJay A.
6、 KohlerCarol E. MarriottMerle F. McBrideFrank MyersJanice C. PetersonDouglas T. ReindlLawrence J. SchoenBoggarm S. SettyBodh R. SubherwalJames R. TaubyJames K. VallortWilliam F. WalterMichael W. WoodfordCraig P. WrayWayne R. Reedy, BOD ExOThomas E. Watson, COStephanie Reiniche, Manager of StandardsS
7、PECIAL NOTEThis American National Standard (ANS) is a national voluntary consensus standard developed under the auspices of the AmericanSociety of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). Consensus is defined by the American National StandardsInstitute (ANSI), of which ASHRAE
8、is a member and which has approved this standard as an ANS, as “substantial agreement reached bydirectly and materially affected interest categories. This signifies the concurrence of more than a simple majority, but not necessarily unanimity.Consensus requires that all views and objections be consi
9、dered, and that an effort be made toward their resolution.” Compliance with thisstandard is voluntary until and unless a legal jurisdiction makes compliance mandatory through legislation.ASHRAE obtains consensus through participation of its national and international members, associated societies, a
10、nd 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; while other committee members may or may not be ASHRAE members, allmust be technically qualified
11、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 should be contacted for:a. interpretation of the contents of this Standard,b. participation in the next review of the Standard,c. offering constru
12、ctive 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 public in light of available information andaccepted industry practices. However, ASHRAE does not guara
13、ntee, certify, or assure the safety or performance of any products, components,or systems tested, installed, or operated in accordance with ASHRAEs Standards or Guidelines or that any tests conducted under itsStandards or Guidelines will be nonhazardous or free from risk.ASHRAE INDUSTRIAL ADVERTISIN
14、G POLICY ON STANDARDSASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for ratingpurposes, by suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providingot
15、her information 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,
16、either stated or implied,that the product has been approved by ASHRAE.ASHRAE Standing Standard Project Committee 63.2Cognizant TC: TC 3.3, Contaminant Control Refrigerating SystemsSPLS Liaison: Merle F. McBride*Denotes members of voting status when the document was approved for publicationCary Haram
17、oto, Chair* John D. Hilker Robert SchultJoseph Behr John E. Hoffman* Ernest W. Schumacher*James Robert Bouril* Walter O. Krause George SciutoRichard Cawley* Kenneth W. Manz* Jorgen Steen-Pedersen*Susan L. Correll* Michael E. Overstreet Richard WillnerDanny M. Halel Shelvin Rosen* American Society of
18、 Heating, Refrigerating and Air-Conditioning Engineers, Inc. (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.CONTENTSANSI/ASHRAE Standard 63.2-1996 (RA2010)Method
19、 of Testing Liquid-Line Filter Drier Filtration CapabilitySECTION PAGEForeword. 21 Purpose 22 Scope . 23 Definitions. 24 Materials and Apparatus. 25 Test to Determine Accuracy of Test System 36 Procedure. 37 Calculation of Results. 4Informative Annex A: Sample Calculation 5Informative Annex B: Bibli
20、ography 5NOTEApproved addenda, errata, or interpretations for this standard can be downloaded free of charge from the ASHRAE Web site at www.ashrae.org/technology. Copyright 2010 American Society of Heating,Refrigerating and Air-Conditioning Engineers, Inc.1791 Tullie Circle NEAtlanta, GA 30329www.a
21、shrae.orgAll rights reserved. American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (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 AN
22、SI/ASHRAE Standard 63.2-1996 (RA 2010)(This foreword is not part of this standard. It is merelyinformative and does not contain requirements necessaryfor conformance to the standard. It has not beenprocessed according to the ANSI requirements for astandard and may contain material that has not beens
23、ubject to public review or a consensus process.Unresolved objectors on informative material are notoffered the right to appeal at ASHRAE or ANSI.)FOREWORDThis is a reaffirmation of Standard 63.2 1996 (RA 2006).This standard was prepared under the auspices of the Ameri-can Society of Heating, Refrige
24、rating and Air-ConditioningEngineers (ASHRAE). It may be used, in whole or in part, byan association or government agency with due credit toASHRAE. Adherence is strictly on a voluntary basis andmerely in the interests of obtaining uniform standardsthroughout the industry. The changes made for the 20
25、10 reaffirmation were: Updating the titles of Appendix A and Appendix B toInformative Annex A and Informative Annex B, respec-tively.Updating the disclaimers preceding the InformativeAnnexes.Removing the numbering of the paragraphs in Informa-tive Annex A.Making other minor editorial changes.1. PURP
26、OSEThe purpose of this standard is to prescribe a laboratorytest method for evaluating the filtration capability of filters andfilter driers used in liquid lines of refrigeration systems.2. SCOPE2.1 This laboratory test method evaluates the capability ofliquid-line filters and filter driers only for
27、 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 up to and includingModel 417S (line size 23 mm maximum).2.3 The technique employed in this standard is the one-passtest method.
28、In this test, a clean-up filter is installed down-stream of the test sample and is designed to retain and preventrecirculation of most of the contaminant particles that are notcollected by the test sample in the first pass.2.4 Filter driers have the added capability of removing andretaining certain
29、dissolved contaminants. This standard doesnot provide measurement of this capability.3. DEFINITIONScontaminant capacity (Mc): the mass in grams of testcontaminant that is retained by the filter under test.contaminant loading (Mt): the mass in grams of test contam-inant that is added to the test appa
30、ratus.filter efficiency (Ef): contaminant capacity divided bycontaminant loading, expressed as a percent.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 refri
31、geration system.liquid-line filter drier: a filter containing a desiccant capableof removing moisture and other dissolved contaminants in therefrigerant stream.pressure drop (P): the difference in pressure between thefilter inlet and filter outlet, including fittings, expressed inkilopascals.test fl
32、ow 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 General. The test contaminant will be a blend of50% coarse test dust as received and 50% retained in a 200-mesh screen. Prepare t
33、his blend from SAE coarse test dustdescribed in SAE J726 JUN93. Sources for the coarse testdust may be found by contacting the Society of AutomotiveEngineers, Inc., 400 Commonwealth Drive, Warrendale, PA15096-0001; (724) 776-4841.4.1.2 Preparation of Test Contaminant. To prepare theblend of contamin
34、ant, first wet-screen a quantity of coarse testdust on a US (ASTM) or Tyler 200-mesh screen (particleretention = 74 m). This is done by placing a portion of thecoarse test dust on a 200-mesh screen and running waterthrough the screen while stirring the course test dust with thefingers. Discard the f
35、ine particles passing through the screen.The +200-mesh particles collected on the screen are removedand dried for one hour at 110C. The test contaminant is pre-pared by mixing 50% by mass of the coarse test dust asreceived (after drying for one hour at 110C) with 50% bymass of the +200-mesh-screened
36、 dust.4.1.2.1 Particle Size Analysis. The coarse test dust asreceived and the blend used as the test contaminant have theapproximate particle sizes listed in Table 1.4.2 Test Fluid. The test fluid shall be Refrigerant 113 (R-113),which is an ozone-depleting substance. Take care to minimizeevaporatio
37、n or loss of test fluid.4.3 Clean-Up Filter. The clean-up filter shall be a filtermembrane of 0.8 m pore size, which is used to estimate theamount of contaminant that passed through the filter undertest.TABLE 1 Wt% in Various Size Ranges, m05 510 1020 2040 4080 80200As received12 12 14 23 30 9Blend
38、6 6 7 11 32 38 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (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 Standar
39、d 63.2-1996 (RA 2010) 34.4 Test Loop Specification4.4.1 Pump. The pump shall be capable of producing asteady-state, nonpulsating flow sufficient to maintain thestandard flow rate through the filter being tested at pressuredrops up to 69 kPa.4.4.2 Reservoir. The reservoir shall be of adequate size to
40、maintain a suitable liquid level at the pump while the testapparatus is operating. To avoid potential problems with con-taminant settling out in the reservoir, it shall be provided witha conical bottom outlet. The volume should be such that theflow rate of the test fluid returning to the reservoir w
41、ill createenough turbulence to prevent settling of the test contaminant.The entrance to the reservoir may be from any direction pro-vided there is sufficient turbulence or imparted velocity toprevent the test contaminant from settling out of the test fluid.4.4.3 Bypass Valve. A bypass valve shall be
42、 provided inthe test apparatus in order to vary and control the flow ratethrough the filter under test. In some systems it may be possi-ble to control the flow rate by regulating the pump speed.4.4.4 Flowmeter. The flowmeter may be of any gener-ally accepted type, such as an orifice meter, venturi m
43、eter, orrotameter. The meter should be of such construction andinstalled in such a way that it does not create undue turbulenceor disturb the steady-state flow in the test apparatus. Themeter shall be calibrated to ensure that any error in indicatedflow is less than 5%.4.4.5 Heat Exchanger. A heat e
44、xchanger shall be pro-vided (if necessary) to maintain the test fluid at 30C 6C.4.4.6 Manometer. A manometer or other pressure-measuring device with a maximum error of 0.3 kPa shall beused to measure the pressure drop across the filter under test.If a U-tube manometer is used, the reading shall be c
45、orrectedfor the effect of the test fluid column on top of the measuringfluid. The pressure taps shall be located approximately 2 tubediameters upstream of the filter and 10 tube diameters down-stream of the filter. Burr-free holes measuring 1.6 mm indiameter shall be used for pressure taps; however,
46、 in line sizes6 mm or smaller, 0.8 mm diameter holes shall be used. 4.4.7 Sight Glasses. Sight glasses shall be installed in thetest apparatus so a visual check can be made to ensure that asolid liquid flow (no bubbles) exists at the inlet and outlet ofthe filter under test.4.4.8 Contaminant-Loading
47、 Device. A contaminant-loading device shall be installed with bypass valves upstreamof the filter under test to permit the introduction of the testcontaminant into the test apparatus while it is in operation.4.4.9 Vent Valve. A vent valve (optional solenoid valve)shall be located at the top of the t
48、est loop immediately aheadof the filter under test to permit the test fluid to drain freelyfrom the filter under test and the clean-up filter. Test fluid dis-charged from the vent valve must be recovered.4.5 Equipment Layout. The general layout of the testapparatus is shown in Figure 1. The line siz
49、e used throughoutthe test apparatus may be any convenient size to cover a rangeof flow rates that will permit the testing of filters of varioussize and prevent settling or trapping of the contaminant. Theline adjacent to the filter under test shall have the same size asthe fittings of the filter under test for a minimum straight dis-tance of at least 15 tube diameters upstream and downstreamof the filter under test.5. TEST TO DETERMINE ACCURACYOF TEST SYSTEM5.1 General. The test for accuracy consists of adding aspecified amount of contaminant to the test apparatus
