R1234yf/R744和R134a/R744两种复叠循环性能对比

被引：4
|
作者：
郭晓颖 [1 ]
王洪利 [1 ]
韩建明 [2 ]
李华松 [1 ]
机构：
[1] 华北理工大学冶金与能源学院
[2] 唐山市热力总公司
来源：
低温与超导 | 2019年 / 47卷 / 07期
关键词：
复叠式系统; R1234yf/R744; R134a/R744; 能量分析;
D O I：
10.16711/j.1001-7100.2019.07.015
中图分类号：
TB657 [制冷设备];
学科分类号：
0807 ; 080705 ;
摘要：
为了获得较低的低温环境,通过建立能量方程及辅助软件EES(Engineering Equation Solver)的编程,分析了R1234yf/R744和R134a/R744两种复叠式制冷系统的蒸发温度、冷凝温度、冷凝蒸发传热温差对系统性能的影响。结果表明:R134a/R744系统的COP略高于R1234yf/R744,R1234yf相对于R134a具有优良的环保特性,因此,在复叠系统中,R1234yf/R744可代替R134a/R744制取低温。
引用
收藏
页码：77 / 81 +86
页数：6
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