Thermodynamic analysis of an ejector–vapour compressor cascade refrigeration system

Using the framework of the first and second law of thermodynamics, an ejector–vapour compressor cascade refrigeration system is studied. The criteria for refrigerant selection are examined, with R134a and R410A selected as the refrigerant for the ejector and compressor sub-cycle, respectively. The e...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2020-09, Vol.141 (6), p.2189-2200
Main Authors: Nguyen, Trung Kien, Le, Chi Hiep
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Combined cycle
Comparative analysis
Coolers
Evaporators
Exergy
Inorganic Chemistry
Laws, regulations and rules
Measurement Science and Instrumentation
Physical Chemistry
Polymer Sciences
Refrigerants
Refrigeration
Temperature gradients
Thermodynamics
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Summary:Using the framework of the first and second law of thermodynamics, an ejector–vapour compressor cascade refrigeration system is studied. The criteria for refrigerant selection are examined, with R134a and R410A selected as the refrigerant for the ejector and compressor sub-cycle, respectively. The effects of generator temperature, evaporator temperature, condenser temperature, intercooler temperature and intercooler temperature difference are examined. The results demonstrate that a combined cycle can improve 30.8% when compared to the COP of single compressor cycle and 122% when compared to the single ejector cycle. In addition, intercooler temperature can be set at 26.5 °C for minimizing total exergy loss.
ISSN:1388-6150
1588-2926
DOI:10.1007/s10973-020-09635-6