PERFORMANCE IMPROVEMENT POTENTIALS OF LOW GLOBAL WARMING POTENTIAL REFRIGERANTS FOR INTERCITY BUS AIR CONDITIONING SYSTEM

被引：2
|
作者：
Unal, Saban [1 ]
Kutlu, Cagri [1 ]
Erdinc, M. Tahir [1 ]
机构：
[1] Osmaniye Korkut Ata Univ, Dept Mech Engn, Osmaniye, Turkey
来源：
THERMAL SCIENCE | 2018年 / 22卷 / 03期
关键词：
ejector; two-evaporator; COP; R1234yf; exergy; low GWP; VAPOR COMPRESSION REFRIGERATION; EJECTOR REFRIGERATION; EXERGY ANALYSIS; R1234YF;
D O I：
10.2298/TSCI160704084U
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this study, theoretical investigation of two evaporator ejector refrigeration system was carried out based on energy and exergy analysis using R134a and low global warming potential refrigerants (namely R1234yf and R1234ze(E)). In order to perform the analyses, a simulation model was developed and then the influence of different parameters on the COP COP increase rate and exergy destructions were discussed for each refrigerant. The model was validated with experimental data for R134a and later used to predict the behavior with R1234yf and R1234ze(E). It was found that the highest exergy destruction occurs in the R1234yf system and the increase rate in the COP with respect to the conventional system by using ejector as an expansion device are 15% for R134a, about 17% for RI 234yf and about 15% for R1234ze(E), respectively.
引用
收藏
页码：1515 / 1524
页数：10
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