[17p-F102-1~17] 9.4 Thermoelectric conversion

△ [17p-F102-3] Dimensionless figure of merit and its efficiency estimation for transient response of thermoelectric module based on impedance spectroscopy

〇Otsuka Mioko¹, Arisaka Taichi¹, Shinozaki Ryo¹, Morita Hiroyuki², Hasegawa Yasuhiro¹ (1.Saitama Univ., 2.SAITEC)

Keywords:thermoelectric module, Impedance spectroscopy, transient response

Dimensionless figure of merit and its efficiency for transient response of a Π-shaped thermoelectric module are estimated based on a theory of impedance spectroscopy. Effective dimensionless figure of merit is described as a function of the product of the characteristic time to cool down the temperature and the representative angular frequency of the module, which in turn is expressed by the thermal diffusivity and length of the elements used. The characteristic time required achieving higher dimensionless figure of merit and efficiency is derived quantitatively for the transient response using the properties of a commercial thermoelectric module.