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- W3030622126 abstract "This thesis presents simulation studies on diffusion absorption refrigeration cycle, single effect absorption refrigeration cycle, GAX (generator absorber exchange) absorption refrigeration cycle and GAX absorption-compression (hybrid) refrigeration cycle. In the first section several kinds of absorption cycles were introduced. In the first part of the second section we studied fundamentals of thermodynamic and in the second part present cycles, assumptions and governing equations were perused. Third section includes results of these studies and comparison of performances coefficients, heat duties of cycle`s components, exergetic efficiencies and exergy destructions among cycles. Fourth section includes conclusions.For a diffusion absorption refrigeration cycle (DAR) it is found that for a generator temperature between 195 and 2050C, recommended values for the concentration of the rich and week solutions are 0.3 and 0.1 ammonia mass fraction, respectively. It is found that in single effect absorption refrigeration cycle, GAX absorption refrigeration cycle and GAX absorption-compression (hybrid) refrigeration cycle for each condenser and evaporator temperature, there is an optimum generator temperature where the exergy destruction of these cycles is minimum, moreover at this point COP and exergetic efficiency of the systems become maximum. Effect of Dx (degassing range) on COP of GAX cycles (conventional GAX and hybrid GAX) was studied and it is found that for each generator temperature there is an optimum Dx where the COP of the cycles is maximum. Comparison among single effect absorption refrigeration cycle, GAX absorption refrigeration cycle and GAX absorption-compression (hybrid) refrigeration cycle illustrated that the COP and exergetic efficiency of GAX absorption-compression (hybrid) refrigeration cycle are the superlative and exergy destruction of this cycle is the least. A reasonable agreement is observed between the result and performance parameter trends obtained from the present study and the published results available in the literature." @default.
- W3030622126 created "2020-06-05" @default.
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- W3030622126 date "2009-01-01" @default.
- W3030622126 modified "2023-09-24" @default.
- W3030622126 title "Thermodynamic Analysis and Optimization of Absorption Refrigeration Cycles" @default.
- W3030622126 hasPublicationYear "2009" @default.
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