Abstract Purpose of this paper is to compare the performance of an alkali metal thermal electric converter (AMTEC) and thermoelectric generator (TEG) as a subsystem for utilizing rejected heat from the molten carbonate fuel cell (MCFC). AMTEC and TEG have various advantages such as; higher power density, no maintenance needed, silent and generally lower cost. Therefore, they have good potential to utilize waste heat. Performance parameters of systems are defined as power output density, exergy destruction rate density, energy and exergy efficiencies. Results show that the system MCFC-AMTEC hybrid system is more advantageous than the MCFC-TEG hybrid system. Some important results are listed follows; maximum power output densities for the MCFC-AMTEC and MCFC-TEG are 2425.833 (W/m2), and 1964.389 (W/m2), respectively, while efficiencies are %, 76.6% and 76.4 %.

中文翻译：

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熔融碳酸盐燃料电池-碱金属热电转换器与熔融碳酸盐燃料电池-热电发电机混合系统性能对比分析

摘要 本文的目的是比较碱金属热电转换器 (AMTEC) 和热电发电机 (TEG) 作为利用熔融碳酸盐燃料电池 (MCFC) 废热的子系统的性能。AMTEC 和 TEG 具有多种优势，例如；更高的功率密度，无需维护，静音且成本通常较低。因此，它们具有利用废热的良好潜力。系统的性能参数定义为功率输出密度、火用破坏率密度、能量和火用效率。结果表明，系统MCFC-AMTEC混合系统比MCFC-TEG混合系统更具优势。下面列出了一些重要的结果；MCFC-AMTEC 和 MCFC-TEG 的最大功率输出密度分别为 2425.833 (W/m2) 和 1964.389 (W/m2)，而效率为 %，76。