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The Calculation And Experimental Analysis of The Mixture Refrigerant in Imported Ultra-Cold Box
Author(s): 
Pages: 10-12
Year: Issue:  1
Journal: LOW TEMPERATURE AND SPECIALTY GASES

Keyword:  制冷剂低温箱实验分析;
Abstract: 在我国超低温箱采用的制冷剂一般为,高温级是R12/R22/R502,低温级是R13.近年来,国内部分单位和部门先后进口了不少的超低温箱,大都使用共沸混合制冷剂,如R500和R503,由于市场上没有或者很少销售这些工质,目前普遍出现超低温箱不能进行正常维修、使用等现状.为此针对进口超低温箱所存在的这类主要问题,结合国内实际情况,进行了制冷剂特性计算和替代工质的实验分析,同时也成功地为国内有关单位进行了进口超低温箱混合工质的替代工作.
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