Exergy modeling of a new solar driven trigeneration system

摘要: Abstract In this paper, exergy modeling is used to assess the exergetic performance of a novel trigeneration system using parabolic trough solar collectors (PTSC) and an organic Rankine cycle (ORC). Four cases are considered: electrical-power, cooling-cogeneration, heating-cogeneration, trigeneration. single-effect absorption chiller utilized provide necessary cooling energy heat exchanger heating energy. The considered examined three modes operation. They are: mode during low-solar radiation time day, storage high-solar night time. operated through collected in thermal tank mode. efficiencies destruction rates under variation ORC evaporator pinch point temperature, pump inlet turbine pressure. This study reveals that maximum electrical-exergy efficiency for 7%, 3.5%, 3%. Alternatively, when used, increases noticeably. trigeneration-exergy 20%, 8%, 7%. Moreover, shows main sources rate evaporators. Therefore, careful selection design these two components essential reduce destructed by them and, thus, increase system.