Energy and Exergy Analysis of Combined Organic Rankine Cycle-Single and Dual Evaporator Vapor Compression Refrigeration Cycle

被引：26

作者：

Pektezel, Oguzhan ^{[1
]}

Acar, Halil Ibrahim ^{[2
]}

机构：

[1] Tokat Gaziosmanpasa Univ, Fac Engn & Nat Sci, Mech Engn Dept, TR-60000 Tokat, Turkey

[2] Sivas Cumhuriyet Univ, Fac Engn, Mech Engn Dept, TR-58000 Sivas, Turkey

来源：

APPLIED SCIENCES-BASEL | 2019年 / 9卷 / 23期

关键词：

organic Rankine cycle; vapor compression refrigeration cycle; exergy analysis; WORKING FLUIDS; DRIVEN; POWER; SELECTION; RECOVERY;

D O I：

10.3390/app9235028

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This paper presents energy and exergy analysis of two vapor compression refrigeration cycles powered by organic Rankine cycle. Refrigeration cycle of combined system was designed with single and dual evaporators. R134a, R1234ze(E), R227ea, and R600a fluids were used as working fluids in combined systems. Influences of different parameters such as evaporator, condenser, boiler temperatures, and turbine and compressor isentropic efficiencies on COPsys and eta(ex,sys) were analyzed. Second law efficiency, degree of thermodynamic perfection, exergy destruction rate, and exergy destruction ratio were detected for each component in systems. R600a was determined as the most efficient working fluid for proposed systems. Both COPsys and eta(ex,sys) of combined ORC-single evaporator VCR cycle was detected to be higher than the system with dual evaporator.

引用

页数：28

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