Comparison of performance of different working fluids suitable for low temperature jet-refrigeration system
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Abstract
A refrigeration system, which can be operated using environment-friendly refrigerants, is most welcome nowadays to mitigate environmental issues. In this regard, six refrigerants (R290, RE170, R717, R123, R600a and R601) possessing zero-ODP but GWP less than 100 have been chosen for assessing their performance in vapour jet refrigeration system. A simulation code in FORTRAN77 has been developed to investigate the performance of the refrigeration system along with that of ejector at its choking-mode of operation. The influence of nature of refrigerants as wet and dry fluids on the overall performance has also been investigated. It is understood that the nature of working fluids does not influence much on the performance of the system so as to ascertain that a wet or dry fluid is better than the other in the selected range of operation. The study reveals that the performance of the system with wet or dry refrigerants depends on the thermal and thermodynamic properties, while the physical and chemical properties of refrigerants are predominant in differentiating the performance of dry and wet refrigerants from one another.
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