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Analysis of R134a Organic Regenerative Cycle

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Document pages: 14 pages

Abstract: The analysis of organic regenerative cycles is necessary to verify thepossibilities of increasing the work and efficiency of a thermodynamic cycleaccording to some control parameters. The results obtained from this work canbe beneficial in several areas such as solar thermal energy. Simulations of anorganic regenerative cycle with up to 4 extractions were carried out in orderto analyze the behavior of maximum efficiency and the work generated in theturbine. R134a was used as an organic fluid, used in low temperature cycles.Evaporation temperature data between 60°C and 100°C and superheat temperaturesequal to 120°C, 200°C and 300°C were tested for cycle analysis. Thus, it waspossible to verify the work behavior and maximum efficiency depending on thenumber of extractions, superheating temperature and evaporation temperature.The models and simulations were made using the Engineering Equation Solver(EES) software and the results were analyzed in Excel. It was concluded thatthe maximum efficiency increases with the increase of the evaporationtemperature and the number of extractions and decreases with the increase ofthe superheat temperature. The turbine work grows by increasing the evaporationand superheat temperatures, but decreases with the increase in extractions.

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