熱電変換モジュールを用いたカルノーバッテリーシステムの検討

抄録

This paper describes the experimental results of Carnot battery system using a thermoelectric module (TEM), which has no moving parts, and is compact. Experiments were conducted on its charge-discharge characteristics. In the charging mode, TEM was driven as a heat pump to convert electricity into heat and heat was stored in a metal block coupled to TEM. In the discharging mode, electricity is generated from the temperature difference between the metal block and the heat sink. The amount of generated electricity was measured at a constant load resistance. The experimental system has worked as a Carnot battery; however, the cycle efficiency was below 1% due to heat losses and other factors.