Exergy Analysis of Stirling Cycle Cryogenerator
Exergy or the available work energy function is a useful concept for analysing various systems. This paper attempts to present exergy analysis for Stirling cycle cryogenerator. The cycle deviates from the ideal cycle due to (1) finite temperature difference (Δt) during heat transfer processes and (2) loss of refrigerating effect due to regenerator ineffectiveness. The analysis shows that at lower temperature ratios the influence of Δt on exergetic efficiency is marginal. However, the influence of regenerator effectiveness on the exergetic efficiency even at lower temperature ratios is considerable. The combined effect of Δt and regenerator effectiveness leads to the practical case and the same also has been analysed.
KeywordsRelative Efficiency Heat Transfer Process Pressure Swing Adsorption Exergy Analysis Dead State
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- 1.B.B. Parulekar and K.G. Narayankhedkar, Use of Exergy Chart for the Study of Air Liquefaction Processes, Indian Journal of Cryogenics, 4:78 (1979).Google Scholar
- 5.R. Banerjee, K.G. Narayankhedkar and S.P. Sukhatme, Exergy Analysis of Pressure Swing Adsorption Processes for Air Separation, Chemical Engg. Science, 45: 467 (1990).Google Scholar
- 6.R. Barron, Cryogenic Systems, McGraw Hill, New York (1966).Google Scholar