摘要
运用分布参数法 ,对目前正广泛使用的环保制冷剂R134a和新型中低温用混合制冷剂R4 0 4A在平行流冷凝器内的换热和流动情况进行了模拟分析和比较 ,结果表明在采用平行流冷凝器的冷藏车运行工况范围内 ,R4 0 4A的传热和流动性能优于R134a ,是一种有广阔应用前景的新型中低温混合制冷工质。
Using the distributing parameter method,the simulation analysis of the heat transfer and the flow characteristics of the new refrigerants R134a and R404A was carried out.The results show that under the operating considerations of the refrigerator cars, R404A had better performance than R134a in the heat transfer and the flow characteristics. R404A is one of the most promising refrigerant substitutes as the new refrigerant mixtures using in the middle and low temperatures.
出处
《低温工程》
CAS
CSCD
北大核心
2004年第6期52-55,共4页
Cryogenics
