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In this work, a combined power cycle which includes a HCCI (Homogenous Charge Compression Ignition) engine and two ORCs (Organic Rankine Cycles) is introduced. In the proposed cycle, the waste heats from the engine cooling water and exhaust gases are utilized to drive the ORCs. A parametric study is conducted to show the effects of decision parameters on the performance and on the total cost rate...
A multi objective optimization method is conducted for a cogeneration system to achieve the best system design parameters from both thermodynamic and economic aspects by utilizing NSGA-II (non-dominated sorting genetic algorithm-II). Exergy efficiency and total cost rate of the system have been considered as objective functions. The cogeneration system consists of a gas turbine and an ORC (organic...
A parametric study and multi-objective optimization strategy are performed for a bottoming cycle of a trigeneration system with an HCCI (homogeneous charge compression ignition) engine as prime mover. To assess the influences of decision parameters on the performance and total cost of cycle, a parametric investigation is conducted. Two different multi-objective optimization scenarios are carried out...
Organic Rankine cycles (ORCs) are appropriate technology for the conversion of low quality thermal energy to electrical power. Meanwhile the waste heat from the exhaust gases of the top cycle of the energy conversion systems to the environment is prevented. The aim of this work is thermodynamic, exergo-economic and environmental assessment of a cogeneration of heat and power cycle (CHP), considering...
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