The use of new refrigerants in compact heat exchangers for the refrigeration industry

被引：5
|
作者：
Boccardi, G
Celata, GP
Cumo, M
Gerosa, A
Giuliani, A
Zorzin, A
机构：
[1] ENEA, Inst Thermal Fluid Dynam, I-00060 Rome, Italy
[2] Univ La Sapienza, Dept Nucl Engn & Energy Convers, Rome, Italy
[3] Univ Rome Tor Vergata, Dept Mech Engn, Rome, Italy
[4] Alfa Laval Artec SpA, R&D, Vicenza, Italy
来源：
HEAT TRANSFER ENGINEERING | 2000年 / 21卷 / 04期
关键词：
D O I：
10.1080/01457630050144505
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present article reports on the results of experimental research carried out on compact plate heat exchangers, currently used as evaporators and condensers in refrigeration loops. The research was aimed at getting information on the thermal efficiency of the heat exchangers, under reference commercial conditions, when using new ozone-friendly refrigerants to replace CFCs and HCFCs. Specifically the influence of some thermal-hydraulic parameters on the heat flux and the overall hear transfer coefficient are investigated for evaporators, using R134a, R407C, and R410A, three fluids proposed to replace R22, and HCFC, currently the most common refrigerant used in residential and commercial air conditioning equipment. Moreover in this article a new thermodynamic method has been applied with the purpose of defining the saturation temperature and investigating the other main parameters for,mixtures in the two-phase region for the fluids R407C and R410A, which are blends of respectively, three and two pure refrigerants.
引用
收藏
页码：53 / 62
页数：10
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