71.100.45;97.040.30 标准查询与下载

DIN-Fachbericht CEN/TR 14739:2005 家用冰箱和冷藏箱中可燃制冷剂的风险评估方案

The Technical Report gives a scheme for carrying out a risk assessment for flammable refrigerants in case of household refrigerators and freezers with refrigerants of group A3 according EN 378-1, taking into consideration a sealed system and a refrigerant charge of not more than 150g g. Sealed systems are refrigerating systems in which all refrigerant containing parts are made tight by welding, brazing or similar permanent connection.

Scheme of carrying out a risk assessment for flammable refrigerants in case of household refrigerators and freezers

PD CEN/TR 14739:2004 家用冰箱和冷藏箱中可燃制冷剂的风险评估方案

The document gives a scheme for carrying out a risk assessment for flammable refrigerants in case of household refrigerators and freezers with refrigerants of group A3 according to EN 378-1, taking into consideration a sealed system and a refrigerant charge of not more than 150 g. Sealed systems are refrigerating systems in which all refrigerant containing parts are made tight by welding, brazing or similar permanent connection. NOTE For risk assessment the method with flow diagrams is selected, because these are helpful for checking the possible ignition of the whole appliances and to estimate the probability of ignition. It takes EN ISO 12100, EN 1050, EN 1127, EN 60335-2-24/A53, E DIN 7003 into consideration. At least the probability of deflagration is the product of multiplication of the probability of defects of different components and the probability for the presence of explosive atmosphere and the probability for the ignition sources.

Scheme for carrying out a risk assessment for flammable refrigerants in case of household refrigerators and freezers

UL 2205-1997 家用冷藏机和冷动机的可替代制冷剂的现场转换或改进

Provides information for the evaluation of the construction and operation of household refrigerators and freezers for the field conversion/retrofit to an alternative refrigerant, including a refrigerant that has been identified as having flammable characteristics. These requirements are primarity intended to be used to investigate the retrofit of existing equipment to alternative refrigerants for compliance with the requirements in this document. These requirements apply to equipment that has been previously investigated and found to comply with an apllicable UL Standard of Safety since the year 1973. This standard was originally listed for public review in the October 23, 1998 issue of Standards Action. It is being resubmitted due to substantive changes.

UL Standard for Safety Field Conversion/Retrofit of Alternative Refrigerants in Household Refrigerators and Freezers First Edition; Contains Revisions Through and Including February 28,2000