Thermal designing on a small-sized AMTEC cell
Thermal designing on a small-sized AMTEC cell
复制标题
小型 AMTEC 电池的热设计
DOI：
10.1109/iecec.2002.1392059
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
T. Honda
中科院分区：
文献类型：
--
作者：
K. Tanaka;T. Fujii;T. Honda
本文讨论了紧凑型AMTEC系统的热设计和性能。紧凑型AMTEC系统采用多个小型电池组件，由外径3 mm的β-氧化铝钠固体电解液管和简单的独立式毛细结构组成。当电池组件布置在容器中时，钠蒸气从电极流向冷凝器的压力降成为一个关键参数。对压降的影响进行了分析，并考虑了最优的几何布置。典型的计算结果表明，基区面积为7.5 cm/sup2/的37管电池在相对较低的工作温度900K时，预计输出功率约为5W，这与工作在1100K左右的高温型电池的输出功率几乎相等。本文报道了小型化和低温操作所需的结构和传热分析。文中还讨论了具有AMTEC和热离子转换器的级联系统的初步热设计。
This work discusses thermal designing and performance of a compact type AMTEC system. The compact type AMTEC system uses multiple small-sized cell components, which consist of sodium beta-alumina solid electrolyte tubes of 3 mm in outer diameter and simple freestanding type capillary structure. When the cell components are arranged in a canister, the pressure drop due to sodium vapor flow from the electrode to the condenser becomes a critical parameter. The effect of the pressure drop was analytically evaluated and the optimum geometrical arrangement was considered. The typical calculated result shows that a 37-tube cell having a base area of 7.5 cm/sup 2/ has a predicted output power of about 5 W at relatively low operating temperature of 900 K. This output power is almost equal to that of the high temperature type cells operating around 1,100 K. Structure and heat transfer analyses necessary for the miniaturization and the low temperature operation are reported in this paper. Preliminary thermal design on a cascaded system with the AMTEC and the thermionic converter is also discussed.