1、Designation: F2826 14 (Reapproved 2018) An American National StandardStandard Test Method forEvaluating the Sustained Air Performance and ExhaustEmission Efficiencies of Central Vacuum Cleaning Units1This standard is issued under the fixed designation F2826; the number immediately following the desi
2、gnation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method is a laborato
3、ry test for determining thesustained air performance and Exhaust Emissions of a centralvacuum cleaner when tested under laboratory conditions.1.2 This test method is applicable to all central vacuumcleaners with or without any type of internal filter. This testmethod is intended to help indicate how
4、 performance may beaffected after multiple times of vacuuming over an extendedperiod of time.1.3 The inch-pound system of units is used in this standardexcept for weight measurements, which are measured in grams.The values stated in parentheses are given for information only.1.4 This standard does n
5、ot purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety, health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international
6、standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.
7、2. Referenced Documents2.1 ASTM Standards:2E1 Specification for ASTM Liquid-in-Glass ThermometersE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodF820 Test Method for Measuring Air
8、 Performance Charac-teristics of Central Vacuum Cleaning Systems2.2 ISO Standard:3ISO 5011 Inlet Air Cleaning Equipment for Internal Com-bustion Engines and CompressorsPerformance Testing3. Terminology3.1 Definitions:3.1.1 exhaust emissionsmeasure of the efficiency of a unitto capture the loading me
9、dia. Exhaust Emissions is (1 (theweight of the media exhausted into the exhaust emissions bag,divided by the weight of the media introduced) 100).3.1.2 input power, W, nthe rate at which electrical energyis absorbed by a vacuum cleaner motor/fan system.3.1.3 model, nthe designation of a group of vac
10、uumcleaner systems having the same mechanical and electricalconstruction.3.1.4 population, nthe total of all units of a particularmodel vacuum cleaner system being tested.3.1.5 sample, na group of vacuum cleaner systems takenfrom a large collection of vacuum cleaner systems of oneparticular model, w
11、hich serves to provide information that maybe used as a basis for making a decision concerning the largercollection.3.1.6 seal vacuuma water lift reading for a power unitwhen the inlet is entirely closed or sealed.3.1.7 standard air density, std, lb/ft3,natmospheric airdensity of 0.075 lb/ft3(1.2014
12、 Kg/m3).3.1.7.1 DiscussionThis value of air density corresponds toatmospheric air at a temperature of 68F (20C), 14.696 psi(101.325 kPa), and approximately 30 % relative humidity.3.1.8 suction, inches of water, nin a vacuum cleanersystem, the absolute difference between ambient and sub-atmospheric p
13、ressure.3.1.9 sustained air performance, nthe ability of a vacuumcleaner to maintain air performance with a known quantity ofmedia aspirated into unit throughout a number of feedingcycles.1This test method is under the jurisdiction ofASTM Committee F11 on VacuumCleaners and is the direct responsibil
14、ity of Subcommittee F11.22 on Air Perfor-mance.Current edition approved May 1, 2018. Published June 2018. Originallyapproved in 2014. Last previous edition approved in 2014 as F2826 14. DOI:10.1520/F2826-14R18.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Custo
15、mer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from International Organization for Standardization (ISO), 1, ch. dela Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http:/www.iso.org
16、.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of Inte
17、rnational Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.13.1.10 test run, nthe definitive procedure that producesthe singular result.3.1.11 test station pressure, Bt, inches of mercury, nfor avacuum cleaner system, the absolu
18、te barometric pressure at thetest location (elevation), and test time.3.1.11.1 DiscussionIt is not the equivalent mean sea levelvalue of barometric pressure typically reported by the airportand weather bureaus. It is sometimes referred to as theuncorrected barometric pressure (that is, not corrected
19、 to themean sea level equivalent value).3.1.12 unit, na single vacuum cleaner system of the modelbeing tested.3.1.13 working vacuuma water lift reading value at anorifice causing a vacuum equivalent to a standard cleaning toolapplied to the floor or rug.4. Significance and Use4.1 The test results al
20、low comparison of sustained airperformance of central vacuum cleaners that employ variousmethods of separating the dirt from the air used to convey thedirt to the central power unit. The results will be expressed asa percentage of the original vacuum performance after loadinga prescribed weight of m
21、edia.4.2 The test results will allow a comparison of emissions bymeasuring the media emitted during the test and expressing thisas an Exhaust Emissions.5. Apparatus5.1 Water Manometer, or equivalent instruments, to providemeasurements from 0 to 150 in. (3810 mm) of water inincrements of 0.1 in. (2.5
22、 mm).5.2 Wattmeter, to provide measurements accurate to within61%.5.3 Voltmeter, to provide measurements accurate to within61%.5.4 Barometer, with an accuracy of 60.05 in. (1.27 mm)Hg, with scale divisions 0.02 in. (0.51 mm) or finer.5.5 Thermometer, solid stem thermometer having a rangefrom 18 to 8
23、9F (8 to 32C) with gradation of 0.2F (0.1C)increments and conforming to the requirements for thermom-eter 63F or 63C as prescribed in Specification E1.5.6 Voltage Regulator System, to control the input voltage tothe vacuum cleaner motor/fan system. The regulator systemshall be capable of maintaining
24、 the vacuum cleaners ratedvoltage 61 % and rated frequency 61 Hz having a wave formthat is essentially sinusoidal with 3 % maximum harmonicdistortion for the duration of the test.5.7 Weighing Scale (for weighing media), accurate to 0.0035oz. (0.1 g) and having a weighing capacity of at least 1000 g.
25、NOTE 1All available scales may not be suitable for this test method.Any scale considered for use in this test method shall be checked forsuitability in accordance with the requirements listed above.5.8 Stop Watch/Clock, with a second hand or other type ofequipment capable of establishing the specifi
26、ed rate of move-ment and total cycle time.5.9 Suction Fixture, used to feed test media and makevacuum readings. The suction fixture will be used for feedingthe media and measuring the vacuum by interchanging the feedtube and manometer tube. (See Fig. 1.)5.10 Emissions Collection Bag, minimum 6 gal c
27、apacity,15.2 mill disposable filter bag with a minimum quality of thefollowing features: 98.4 % dust retention of particle sizes downto and including 0.3 microns (as tested per ISO 5011), an airpermeability rating of 239 L/m2s, an initial pressure loss of480 Pa, and a 277 kPa burst strength. (For un
28、its without anFIG. 1 Suction FixtureF2826 14 (2018)2integral discharge tube, a non-permeable shroud shall be fittedover the discharge area such that all emissions are routed intothe emissions bag.)6. Sampling6.1 A minimum of three units of the same model centralvacuum cleaner system, selected at ran
29、dom in accordance withgood statistical practice, shall constitute the population sample.6.1.1 To determine the best estimate of the sustained airperformance and Exhaust Emissions for the population of thecentral vacuum cleaner system model being tested, the arith-metic mean of the Sustained Air Perf
30、ormance and ExhaustEmissions of the sample from the population shall be estab-lished by testing it to a 90 % confidence level within 65%ofthe calculated mean.46.2 Annex A1 provides a procedural example for determin-ing the 90 % confidence level and when the sample size shallbe increased.7. Materials
31、7.1 MedialCommercial grade talcum.8. Conditioning8.1 Test RoomThe test room shall be maintained at 70 65F (21 6 3C) and 45 to 55 % relative humidity.8.2 All components involved in the test shall remain and beexposed in the controlled environment for at least 16 h prior tothe start of the test.9. Pre
32、paration for Test9.1 New Test Central Vacuum Systems:9.1.1 Preconditioning a New Central Vacuum SystemRunthe system in a rated voltage 61 % and rated frequency 61Hzwith filters in place for 1 h. Unit is to run in at full open orificeduring preconditioning period.9.1.2 For systems with non-disposable
33、 filters, weigh andrecord the filters original weight to the nearest 0.0035 oz (0.1g). This may not be possible with some systems in which thenon-disposable filter cannot be removed.9.2 Used Test Central Vacuum Systems:9.2.1 Recondition a used test central vacuum system prior toeach test run as foll
34、ows:9.2.1.1 Thoroughly remove excess dirt from the test centralvacuum system. Without using tools for disassembly, clean theentire outer surface, ductwork, and inside of the chambersurrounding any and all filters (disposable or not).9.2.1.2 For systems using disposable filters, use new dispos-able f
35、ilter(s) for each test. Thoroughly clean the inside of thechamber surrounding the primary filter each time the filter isreplaced.9.2.1.3 For systems using cloth filter bags or other types ofnon-disposable dirt receptacles, empty according to manufac-turers instructions after each test run, and clean
36、 the cloth filterbag or non-disposable dirt receptacle until its weight is within0.07 oz (2 g) of its original weight (see 9.1.2).9.3 Set-Up for Sustained Air Performance and ExhaustEmissions Test:9.3.1 Set up the test equipment and test unit as shown in Fig.2. Connect the suction fixture to the inl
37、et side of the test unitand the emissions collection bag to the discharge side of thetest unit. Ensure connections are secure and sealed. Do notattach a muffler to the exhaust line during this test.4Two sources of the talcum (USP Grade Supreme Talc) known to the committeeat this time are Fischer Sci
38、entific Co., 1600 West Glen Avenue, Box 171, Itasca, IL60143 and Luzenac America (Rio Tinto Minerals), 8051 E. Maplewood Ave.,Building 4, Greenwood Village, CO 80111.FIG. 2 Sustained Air Performance and Exhaust Emissions SetupF2826 14 (2018)39.3.1.1 Energize the test unit for 60 min with the inletre
39、duced to a12 in. orifice, at rated voltage 61 % and ratedfrequency 61 Hz to eliminate any moisture in the emissionscollection bag. For vacuum cleaners with dual nameplatevoltage ratings, conduct the test at the highest voltage.9.3.1.2 Ensure that there is no leakage between the dis-charge side of th
40、e test unit and emissions collection bag.Ensure that there is no leakage of the emissions collection bag.9.3.1.3 De-energize the vacuum cleaning system and imme-diately weigh the emissions collection bag. Record its weightto the nearest 0.0035 oz (0.1 g).9.3.2 Connect manometer or equivalent instrum
41、ent to thetap on the suction fixture. With the central vacuum de-energized, set manometer to zero and check all instruments forproper operation.NOTE 2The suction fixture and manometer will be alternatelyconnected to the suction fixture to feed media and record vacuumrespectively during the test cycl
42、e.9.3.3 Record absolute barometric pressure (not corrected foraltitude) and dry- and wet-bulb temperature readings of the testarea. Read barometric pressure to the nearest 0.02 in. ofmercury (0.51 mm Hg), and the dry- and wet-bulb tempera-tures to the nearest 0.2F (0.1C).9.3.4 Connect a wattmeter an
43、d voltmeter in accordance withFig. 3.9.3.4.1 Wattmeter CorrectionIf needed, the indicationmay be corrected for voltmeter and wattmeter potential coilloss by opening the load circuit on the load side of thewattmeter with the line voltage at the operation value. Thewattmeter current connection may be
44、at its most sensitiveposition. Subtract this loss value from the total load indicationto obtain the true load. As an alternate method, use thefollowing equation:WC5 WI2 V2RT(1)Where:WC= corrected wattage,WI= indicated wattage,V = voltmeter reading, andRT=RpXRv/(Rp+RV).Where:RT= total resistance,Rp=
45、wattmeter potential coil resistance, andRv= voltmeter coil resistance.10. Test Procedures10.1 Sustained Air Performance and Exhaust Emissions:10.1.1 Condition or restore test units in accordance with 9.1through 9.2.1.3.10.1.2 Maintain power unit and dirt canister in their normaloperation orientation
46、 with the setup described in 9.3.1 through9.3.4.1 for sustained air performance and exhaust emissionsmeasurement.10.1.3 After the five minute run-in and with the vacuumcleaning system operating at a constant rated voltage 61%and rated frequency 61 Hz. Record the initial suction andinput power in tha
47、t order. Read the suction to the nearestgradation of the appropriate instrument.10.1.3.1 Take the suction readings (working vacuum at 0.75in. (19.00 mm) orifice referred to as “suction” from hereforward) as soon as the manometer reaches a true peak. (Whenusing a fluid type manometer, the liquid leve
48、l may peak, drop,and peak again. The second peak is the true peak reading. Aperson conducting the test for the first time shall observe atleast one run before recording data. (See Test Method F820 forinstructions on how to minimize the overshoot (first peak) ofthe liquid level.)10.1.4 With the power
49、 unit still energized, disconnect themanometer and connect the suction fixture to the tap on theapparatus as shown in Fig. 1.10.1.5 Feed the test media at the rate of 1.76 6 0.07 oz/min(50.0 6 2.0 g/min) into the suction fixture. Allow the powerunit to pick-up all 50.0 g of the test media.10.1.6 De-energize the power unit until the motor stopsrotating; reconnect suction fixture to manometer.10.1.7 Re-energize the power unit and let it run for 10 s ata constant rated voltage 61 % and rated frequency 61 Hz.Record the suction and input
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