In this work, a new hybrid system for combined power and cooling applications is developed and investigated. The novelty of this research originates from two major achievements. First, the use of detailed analytical model for double-effect AC with fuel cell. Second, using two heat recovery systems (TEG and AC) to utilize the waste heat from a fuel cell. The system consists of a phosphoric acid fuel cell (PAFC), ThermoElectric generator (TEG), and an absorption chiller (AC). The internal heat generation in PAFC is utilized using TEG to achieve additional electricity production, while the exhaust heat by PAFC is utilized to run an AC to produce cooling power. The results show that the maximum useful power (electricity and cooling) obtained from this hybrid system is 11% greater than the maximum electrical power generated by the standalone PAFC. The maximum efficiency of this hybrid system is 7% greater than the maximum standalone PAFC efficiency, but the improvement can reach 10% when optimizing the system operating conditions. The sensitivity analysis study demonstrates that decreasing the operating temperature, increasing the fuel pressure, and decreasing the ambient temperature could enhance the overall hybrid system performance. Additionally, we found that a better performance is achieved when the heat utilized by TEG is minimized and majority of the useful heat is used in the AC.

在这项工作中，开发并研究了一种用于混合动力和制冷应用的新型混合动力系统。这项研究的新颖性来自两个主要成就。首先，将详细的分析模型用于带有燃料电池的双效交流电。其次，使用两个热回收系统（TEG和AC）来利用燃料电池产生的废热。该系统由磷酸燃料电池（PAFC），热电发电机（TEG）和吸收式冷却器（AC）组成。PAFC的内部热量利用TEG进行发电，而PAFC的余热用于运行交流电以产生冷却功率。结果表明，从该混合动力系统获得的最大有用功率（电和冷却）比独立PAFC产生的最大功率大11％。此混合系统的最大效率比独立的PAFC的最大效率高7％，但是在优化系统工作条件时，可以提高10％。敏感性分析研究表明，降低工作温度，提高燃油压力和降低环境温度可以增强整个混合动力系统的性能。此外，我们发现，当TEG所利用的热量最小化并且大部分有用热量用于AC中时，可以获得更好的性能。降低环境温度可以增强整个混合动力系统的性能。此外，我们发现，当TEG所利用的热量最小化并且大部分有用热量用于AC中时，可以获得更好的性能。降低环境温度可以增强整个混合动力系统的性能。此外，我们发现，当TEG所利用的热量最小化并且大部分有用热量用于AC中时，可以获得更好的性能。