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Simulation of the performance of a solar concentrating photovoltaic-thermal collector, applied in a combined cooling heating and power generation system

机译:模拟太阳能聚光光伏集热器的性能,应用于冷却供热联合发电系统

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摘要

The aim of this study is evaluating the performance of a combined cooling, heating, and power generation system (a trigeneration), composed of a concentrating photovoltaic-thermal unit, coupled with a water-ammonia absorption chiller. In the presented design, an ammonia-water absorption refrigeration cycle with 5 kW of cooling capacity is considered as a part of the trigeneration system. Also, a concentrating photovoltaic-thermal device, equipped with a linear Fresnel collector, is employed as the heat source. The performance of the system is modeled and simulated using TRNSYS. Furthermore, in case of replacing the concentrating collector by a conventional one, the performance of the cycle is investigated. It is revealed that, with the conventional collector type, the system could not provide enough thermal energy for the refrigeration cycle. The annual average of the electrical efficiency of the designed collector and trigeneration system are 12.8% and 58.01%, respectively. By investigating the produced energy from the presented unit, it is concluded that this system could be employed as the heating and cooling source of a typical residential building. However, the electrical energy demand of the building cannot be fully supplied with the presented design, and 6030 kWh of the electrical energy must be provided from the grid.
机译:这项研究的目的是评估由集中式光伏热力装置和水氨吸收式制冷机组成的制冷,制热和发电组合系统(三联发电)的性能。在提出的设计中,具有5 kW制冷量的氨水吸收式制冷循环被视为三代发电系统的一部分。而且,配备有线性菲涅耳收集器的聚光光伏热装置被用作热源。使用TRNSYS对系统的性能进行建模和仿真。此外,在用常规的收集器代替浓缩收集器的情况下,研究了循环的性能。揭示了,对于常规的收集器类型,该系统不能为制冷循环提供足够的热能。设计的集热器和三联发电系统的年平均电效率分别为12.8%和58.01%。通过调查从所提供的单元产生的能量,可以得出结论,该系统可以用作典型住宅建筑的供暖和制冷源。但是,建筑物的电能需求无法通过提出的设计完全满足,并且必须从电网提供6030 kWh的电能。

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