可燃性工质充注量限定值现状和趋势

Discussion on Charge Limits for Flammable Refrigerants

可燃性工质充注量限值的规定是国外制冷空调电器安全标准进行安全风险控制的主要途径之一,也是国外标准中重要的部分。在研究了国外电器安全标准对于制冷空调器可燃性工质的充注量限值规定的基础上,对国外标准中中充注量限定值的设定方法进行分析,结合这样的分析对我国相关工作的开展提出了建议。根据限定值规定方式的不同,将国外标准在这个问题上的思路分为了三种,包括通过公式形式确定限定值方法;设定最大充注量方法;通过泄漏量对充注量设定方法。这不仅能够了解国外标准在可燃性工质充注量问题上的相关规定,而且对于我国采用可燃性工质的安全问题解决具有借鉴意义。

The regulation on the charge limits for flammable refrigerants is an important part of the foreign standards related to refi＇igeration and air conditioning. On the basis of the review on the regulation on the charge limits for flammable refrigerants in the foreign standards, the methods to provide the charge limits for flammable refrigerants were analyzed in this study. The charge limits for flammable refrigerants can be provided by formulae according to the room floor area, maximum charge values, or leakage limits. These methods may be useful for us to provide the charge limits for flammable refrigerants in China.