ASTM F820-2018 Standard Test Method for Measuring Air Performance Characteristics of Central Vacuum Cleaning Systems.pdf
《ASTM F820-2018 Standard Test Method for Measuring Air Performance Characteristics of Central Vacuum Cleaning Systems.pdf》由会员分享,可在线阅读,更多相关《ASTM F820-2018 Standard Test Method for Measuring Air Performance Characteristics of Central Vacuum Cleaning Systems.pdf(17页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: F820 18 An American National StandardStandard Test Method forMeasuring Air Performance Characteristics of CentralVacuum Cleaning Systems1This standard is issued under the fixed designation F820; the number immediately following the designation indicates the year of originaladoption or,
2、in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers procedures for determining airperformance characteristics
3、 of household central vacuumcleaning systems, which use a flexible cleaning hose assemblyand incorporates a series universal motor(s). This test methoddoes not apply to the carpet cleaning mode of operation wheredirt or debris is involved.1.2 These tests and calculations include determination ofsuct
4、ion, airflow, air power, maximum air power, and inputpower under standard operating conditions (see Note 1).NOTE 1For more information on air performance characteristics, seeRefs (1-6).21.3 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are p
5、rovidedfor information only.1.4 This standard does not 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 regulat
6、ory limitations prior to use. Aspecific precautionary statement is given in Note 4.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guid
7、es and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3E1 Specification for ASTM Liquid-in-Glass ThermometersE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conduc
8、ting an Interlaboratory Study toDetermine the Precision of a Test MethodE2251 Specification for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision LiquidsF431 Specification for Air Performance Measurement Ple-num Chamber for Vacuum Cleaners2.2 AMCA Standard:421085 Laboratory Methods of Tes
9、ting Fans for Rating2.3 IEC Standard:5IEC 62885-2 Surface Cleaning Appliances Part 2: DryVacuum Cleaners for Household or Similar Use Meth-ods for Measuring the Performance3. Terminology3.1 Definitions:3.1.1 air power, AP, W, nin a vacuum cleaner, the net timerate of work performed by an air stream
10、while expendingenergy to produce an airflow by a vacuum cleaner underspecified air resistance conditions.3.1.2 automatic bleed valve, nany device a part of avacuum cleaners design, which automatically introduces anintentional leak within the vacuum cleaners system whenmanufacturer specified conditio
11、ns are met.3.1.3 corrected airflow, Q, cfm, nin a vacuum cleaner, thevolume of air movement per unit of time under standardatmospheric conditions.3.1.4 input power, W, nthe rate at which electrical energyis absorbed by a vacuum cleaner.3.1.5 model, nthe designation of a group of vacuumcleaners havin
12、g the same mechanical and electrical construc-tion with only cosmetic or nonfunctional differences.3.1.6 population, nthe total of all units of a particularmodel vacuum cleaner being tested.1This test method is under the jurisdiction of ASTM Committee F11 on VacuumCleaners and is the direct responsi
13、bility of Subcommittee F11.22 on Air Perfor-mance.Current edition approved Oct. 1, 2018. Published October 2018. Originallyapproved in 1988. Last previous edition approved in 2017 as F820 17. DOI:10.1520/F0820-18.2The boldface numbers in parentheses refer to the list of references at the end ofthis
14、standard.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4Available from Air Movement and Control Association
15、, Inc., 30 West Univer-sity Dr., Arlington Heights, IL 600041893.5Available from the IEC Web store, webstore.iec.ch, or American NationalStandards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 1
16、9428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Tec
17、hnical Barriers to Trade (TBT) Committee.13.1.7 repeatability limit (r), nthe value below which theabsolute difference between two individual test results obtainedunder repeatability conditions may be expected to occur with aprobability of approximately 0.95 (95 %).3.1.8 reproducibility limit (R), n
18、the value below which theabsolute difference between two test results obtained underreproducibility conditions may be expected to occur with aprobability of approximately 0.95 (95 %).3.1.9 repeatability standard deviation (Sr), nthe standarddeviation of test results obtained under repeatability cond
19、i-tions.3.1.10 reproducibility standard deviation (SR), nthe stan-dard deviation of test results obtained under reproducibilityconditions.3.1.11 sample, na group of vacuum cleaners taken from alarge collection of vacuum cleaners of one particular model,which serves to provide information that may be
20、 used as a basisfor making a decision concerning the larger collection.3.1.12 standard air density, std, lb/ft3,natmospheric airdensity of 0.075 lb/ft3(1.2014 kg/m3).3.1.12.1 DiscussionThis value of air density correspondsto atmospheric air at a temperature of 68 F (20 C), 14.696 psi(101.325 kPa), a
21、nd approximately 30 % relative humidity.3.1.13 suction, inch of water, nin a vacuum cleaner, theabsolute difference between ambient and subatmospheric pres-sure.3.1.14 test run, nthe definitive procedure that producesthe singular result of calculated maximum air power.3.1.15 test station pressure, B
22、t, inch of mercury, nfor avacuum cleaner, the absolute barometric pressure at the testlocation (elevation) and test time.3.1.15.1 DiscussionIt is not the equivalent mean sea levelvalue of barometric pressure typically reported by the airportand weather bureaus. It is sometimes referred to as theunco
23、rrected barometric pressure (that is, not corrected to themean sea level equivalent value). Refer to 5.4 for additionalinformation.3.1.16 unit, na single vacuum cleaner of the model beingtested.4. Significance and Use4.1 The test results allow the comparison of the maximumair power available when no
24、 dirt has been introduced into thevacuum cleaning system, that is, a completely clean filter or anempty, clean dirt container.5. Apparatus5.1 Plenum ChamberSee Specification F431 or IEC62885-2, Section 5.8.3.5.2 Water Manometers, or equivalent instruments. One tomeasure from 0 to 6 in. (152.4 mm) in
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTMF8202018STANDARDTESTMETHODFORMEASURINGAIRPERFORMANCECHARACTERISTICSOFCENTRALVACUUMCLEANINGSYSTEMSPDF
链接地址:http://www.mydoc123.com/p-1244027.html