نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشیار و عضو هیئت علمی گروه مکانیک- دانشکده فنی- دانشگاه گیلان
2 گروه مکانیک، واحد رودسر و املش، دانشگاه آزاد اسلامی، رودسر، ایران،
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Combined heat and power systems are used to renewable energies and reducing fossil fuels. In this work, investigated energy efficiency, exergy and exergy economic a Brayton cycle and refrigeration cycle with ejector that used solar energy as heat source. Considering the volume of control for each component of the system and the interaction of heat, work, input and output currents using mass and energy survival equations, thermodynamic analysis of the system has been performed. Inlet pressure turbine, outlet pressure turbine, inlet temperature turbine and temperature of evaporator are as variable parameters, when one of the parameters changes, the other parameters are kept constant, so that the thermodynamic analysis focuses on important parameters. Results showed that inlet pressure of initial flow in ejector and out let velocity of flow on ejector are increased with increasing outlet pressure of turbine. Storage tank had most exergy destruction rate among all components for high temperature difference that it’s almost 29% from all of the exergy destruction rate. Also, the highest cost per unit power is related to the combine heat and power cycle that it’s about 53% of the total cost.
کلیدواژهها [English]
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