Performance Investigation of Expander-Compressor Unit in Vapor Compression Refrigeration System Using Alternative Refrigerants
Journal Title: IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) - Year 2018, Vol 15, Issue 4
Abstract
Efficient refrigeration system using eco friendly refrigerants are of great importance with the growing application of it. It has been investigated that using expanders in vapor compression refrigeration system (VCRS) in place of conventional VCRS is a viable option to improve the energy efficiencies of refrigeration systems. Advancement in technology also supports the idea to manufacture and integrate expanders into practical VCRS. The present research focuses on analyzing the performance of eco friendly refrigerants in such a system. In the study four refrigerants namely R134a, R1233zd(E), R423a and R1243zf are considered in a expander based VCRS and the thermodynamic analysis is of the system using these refrigerants are done. R134a is taken as a base refrigerant to compare the outcome of other three refrigerants in the system. The COP of the VCRS is found to be in following order R1233zd(E), R134a, R423a and R1243zf where R1233zd(E) has the largest value of COP and R1233zf has the lowest value. Exergetic efficiency also shows a similar trend for these refrigerants when used in expander based VCRS. Although R1233zd(E) gives better results but the difference in the performance of other two alternative refrigerants is not large when compared with R134a. Thus, making them potential replacement of R134a due their very low global warming potential (GWP).
Authors and Affiliations
Naushad A. Ansari, Akhilesh Arora, Samsher . , Manjunath K
Keywords
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- EP ID EP438423
- DOI 10.9790/1684-1504030815.
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