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Optimizing solar cooling systems
Case Studies in Thermal Engineering ( IF 6.8 ) Pub Date : 2020-05-27 , DOI: 10.1016/j.csite.2020.100663
Maher Shehadi

This papers discusses solar powered absorption cycle performance by simulating different component temperatures. The main components that were investigated included a generator, condenser, absorber and evaporator. The COP was optimized against the generator temperature while varying the other temperatures one at a time. The considered range for the generator temperature was 55–85°C (131–185 F). The optimum value for the evaporator temperature was 10°C (50 F), while that for the condenser and absorber was 30°C (86 F). The optimized COP was around 0.776 with the above selected components' temperatures and for generator temperatures higher than 70°C (158 F). A simulation for the proposed optimized system was run for a 250 m2 (2691 ft2) house located in Indiana, USA and it was found that 13 solar collectors, having a 2 m2 (21.5 ft2) surface area each, were needed to run the generator along with a storage tank ranging in size from 1300 to 1700 L (343–450 gallons). The initial cost for such systems is much higher than that for conventional cooling systems, but the savings from the sustainable running cost offsets such higher initial costs over the long time. With the significant drop in collector prices and available incentives from the government and state agencies to use such sustainable systems, the payback period could be significantly improved.



中文翻译:

优化太阳能冷却系统

本文通过模拟不同的组件温度来讨论太阳能吸收循环的性能。研究的主要组件包括发电机,冷凝器,吸收器和蒸发器。针对发电机温度优化了COP,同时一次改变了其他温度。发电机温度的考虑范围是55–85°C(131–185 F)。蒸发器温度的最佳值为10°C (50 F),冷凝器和吸收器的温度为30°C(86楼)。在上述选定组件的温度下以及发电机温度高于70的情况下,优化的COP约为0.776°C(158楼)。针对位于美国印第安纳州的250 m 2(2691 ft 2)房屋进行了拟议的优化系统的仿真,发现需要13个太阳能收集器,每个太阳能收集器的表面积均为2 m 2(21.5 ft 2)。来运行发电机以及一个储罐,储罐的大小在1300至1700 L(343-450加仑)之间。这种系统的初始成本比常规冷却系统的初始成本高得多,但是可持续运行成本的节省抵消了长期以来如此高的初始成本。随着收藏家价格的大幅下降以及政府和国家机构使用此类可持续性系统的激励措施,投资回收期将得到显着改善。

更新日期:2020-05-27
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