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Thermal modeling and triple objective optimization of a new compressed air energy storage system integrated with Rankine cycle, PEM fuel cell, and thermoelectric unit
Sustainable Energy Technologies and Assessments ( IF 7.1 ) Pub Date : 2020-12-15 , DOI: 10.1016/j.seta.2020.100810
Shoaib Khanmohammadi , Mohammad Rahmani , Farayi Musharavati , Saber Khanmohammadi , Quang-Vu Bach

Intermittent behavior of renewable energy triggered researchers for using energy storage systems to provide continues operation of renewable-based energy systems. In the current study, an integrated energy system including compressed air energy storage, Rankine cycle, Proton Exchange Membrane (PEM) fuel cell (FC), and thermoelectric generator (TEG) modules are investigated to introduce a new system. To show effects of adding TEG units and PEM fuel cell in the new configuration, three arrangements including conventional compressed air energy storage system (CAES), CAES/TEG and CAES/TEG-FC are investigated. It is found that the proposed CAES/TEG-FC system energy efficiency is 31.85%, which is 1.6% higher than conventional CAES. The exergy efficiency of CAES/TEG-FC is 35.13%, which is 1.44% higher than the conventional one. The proposed system generates 35.6 kW hot water and charge/discharge time are 2.91 hr/4.64 hr. A parametric analysis conducted on the discharge mass flow rate, intercooler outlet temperature, compression pressure ratio, and wind velocity with charging time, exergy efficiency, and total useful products as three major outputs. The tri-objective optimization shows by the technique for order of preference by similarity to ideal solution the optimized value of exergy efficiency, total useful output, and charge time are 34%, 1078.46 kW, and 5.28 hr.



中文翻译:

集成朗肯循环,PEM燃料电池和热电装置的新型压缩空气储能系统的热模型和三目标优化

可再生能源的间歇性行为促使研究人员使用储能系统提供可再生能源系统的持续运行。在当前的研究中,研究了包括压缩空气储能,朗肯循环,质子交换膜(PEM)燃料电池(FC)和热电发电机(TEG)模块的集成能源系统,以引入新系统。为了显示在新配置中添加TEG单元和PEM燃料电池的效果,研究了三种布置,包括常规压缩空气储能系统(CAES),CAES / TEG和CAES / TEG-FC。发现建议的CAES / TEG-FC系统能效为31.85%,比常规CAES高1.6%。CAES / TEG-FC的火用效率为35.13%,比传统的高出1.44%。拟议的系统产生35.6 kW的热水,充电/放电时间为2.91 hr / 4.64 hr。对排气质量流量,中冷器出口温度,压缩压力比和风速进行参数分析,并以充电时间,火用效率和有用的总产品作为三大输出。通过与理想解决方案相似的优先级排序技术,三目标优化技术显示出火用效率,总有用输出和充电时间的优化值为34%,1078.46 kW和5.28 hr。

更新日期:2020-12-16
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