BS EN 12900-2005 制冷压缩机.厂商提供的性能数据的额定条件、公差和图示.pdf
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1、BRITISH STANDARD BS EN 12900:2005 Refrigerant compressors Rating conditions, tolerances and presentation of manufacturers performance data The European Standard EN 12900:2005 has the status of a British Standard ICS 23.140; 27.200 BS EN 12900:2005 This British Standard was published under the author
2、ity of the Standards Policy and Strategy Committee on 15 February 2006 BSI 15 February 2006 ISBN 0 580 46965 4 National foreword This British Standard is the official English language version of EN 12900:2005. It supersedes BS EN 12900:1999 which is withdrawn. The UK participation in its preparation
3、 was entrusted to Technical Committee RHE/4, Testing of refrigerant compressors, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European public
4、ations referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the nece
5、ssary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the inte
6、rpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 10, an inside back cover and a back
7、 cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments W - - - - - - - - - - 8- - 7 - 7- 7- 7- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - W W D - - w - - -
8、 - EN 12900:2005 (E) 2 Contents Page Foreword 3 1 Scope.4 2 Normative references .4 3 Terms and definitions.4 4 Parameters for the presentation of performance data.5 5 General requirements.7 6 Performance data7 7 Standard reference points8 8 Tolerances.8 9 Correction factors.9 EN 12900:2005 (E) 3 Fo
9、reword This European Standard (EN 12900:2005) has been prepared by Technical Committee CEN/TC 113 “Heat pumps and air conditioning units”, the secretariat of which is held by AENOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or
10、 by endorsement, at the latest by April 2006, and conflicting national standards shall be withdrawn at the latest by April 2006. This European Standard supersedes EN 12900:1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun- tries are b
11、ound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Esto- nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and
12、United Kingdom. EN 12900:2005 (E) 4 1 Scope This European Standard specifies the rating conditions, tolerances and the method of presenting manufacturers data for positive displacement refrigerant compressors. These include single stage compressors and single and two stage compressors using a means
13、of liquid subcooling. This is required so that a comparison of different refrig- erant compressors can be made. The data relate to the refrigerating capacity and power absorbed and include cor- rection factors and part-load performance where applicable. 2 Normative references The following reference
14、d documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 378-1:2000, Refrigerating systems and heat pumps Safety and
15、environmental requirements Part 1:Basic requirements, definitions, classification and selection criteria EN 13771-1, Compressors and condensing units for refrigeration Performance testing and test methods Part 1: Refrigerant compressors ISO 817, Refrigerants Designation system 3 Terms and definition
16、s For the purposes of this European Standard, the terms and definitions of EN 378-1:2000 and the following apply. 3.1 positive displacement compressor compressor in which compression is obtained by changing the internal volume of the compression chamber, see 3.4.6 of EN 378-1:2000 3.2 refrigerating
17、capacity product of the mass flow of refrigerant through the compressor and the difference between the specific enthalpy of the refrigerant at the compressor inlet and the specific enthalpy of saturated liquid NOTE The refrigerant at the compressor inlet is superheated above the suction dew point te
18、mperature to the stated value (see Table 1). The saturated liquid is at a pressure corresponding to the compressor discharge pressure. 3.3 subcooling difference between the bubble point temperature of the refrigerant corresponding to the compressor discharge pressure and the temperature of the liqui
19、d refrigerant below the bubble point 3.4 superheat difference between the dew point temperature of the refrigerant corresponding to the compressor suction pressure and the suction vapour temperature of the refrigerant at the compressor inlet 3.5 power absorbed for externally driven compressors: the
20、power at the compressor shaft; for motor compressors: the electrical power input at the motor terminals 3.6 coefficient of performance, COPr ratio of refrigerating capacity to the power absorbed, expressed in Watt/Watt EN 12900:2005 (E) 5 4 Parameters for the presentation of performance data The par
21、ameters as shown in Table 1a Table 1 d shall be used for the presentation of the performance data. Table 1 a Parameters for the presentation of performance data with compressors used in standard applications Parameters Refrigerant Suction vapour temperature (C) or superheat (K) at the compressor inl
22、et Ambient temperature around the compressor Compressor application 32 C Household and similar refrigerators/freezers Halocarbons and hydrocarbons including refrigerant blends 20 C or 10 K Other applications R-717 5 K Any application using ammonia Other refrigerants As appropriate, to be clearly spe
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- BS EN 12900-2005 制冷压缩机.厂商提供的性能数据的额定条件、公差和图示 12900 2005 制冷 压缩机 厂商 提供 性能 数据 额定 条件 公差 图示
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