混合制冷剂冰箱对比试验研究

EXPERIMENTAL STUDY ON DOMESTIC REFRIGERATORS WITH THE MIXTURE REFRIGERANT

本文对二元混合工质HFC152a/HCFC22、 HFC152a/HFC125在冰箱上应用的制冷循环性能进行了详细的理论计算和分析,并且对这两种混合工质灌注式替代CFC12、在最佳配比和充灌量下的冰箱主要制冷性能进行了对比试验研究。试验结果表明:在合适的配比和充灌量下混合工质冰箱制冷性能指标满足国家标准要求, HFC152a/HFC125在最佳充灌量为97 g时,试验冰箱耗电量为1.156 kW·h/24h,比CFC12节能10％,比HFC152a/HCFC22节能0.81％。因此, HFC1S2a/HFC125比HFC152a/HCFC22更适合于灌注式替代CFC12。

The performances of the refrigeration cycle of the mixture HFC152a/HCFC22 and HFC152a/HFC125 used as a refrigerant for domestic refrigerators were theoretically calculated and analyzed. The experimental study on the main performances of refrigerator refrigeration cycle was conducted by using the two mixtures substituting for CFC12 under the condition of unchanged original refrigerator construction and its optimization composition and charge amount. The experimental results indicate that the performances of the refrigerator using the mixtures meet the national standard request, and the optimal charge amount of HFC152a/HFC125 in BCD-218 refrigerator is 97 g, its energy consumption is 1.156 kW-h/24 h which is only 90 percent of that of CFC12 and 99 percent of that of HFC152a/HFC125. Therefore the mixture refrigeration HFC152a/HFC125 is the more suitable to substituting CFC12 than HFC152a/HCFC22.