The Great Leap Forward?: The Teaching of Sociology 1975-1979, and beyond

Thermoelectricity for crystallographic anisotropy controlled Bi–Te based alloys and p–n modules

“…In the present soldering-less process, the module is permitted to operate at relatively high temperature and large temperature difference can be applied in order to maximize the output power by Eq. (2). Even when using the present module unit in the vicinity of T h = 500 K, no cracks are detected at both thermoelectric modules.…”

“…Conversion efficiency (η) of the thermoelectric generator is given as η = η Carnot · η Mater , i.e., η is limited by Carnot efficiency (η Carnot ) which is proportional to the temperature difference ( T h−c ) between cold and hot sources as well as by material performance (η Mater ) which is proportional to figure of merit (z) [2]. Figure of merit (z) is defined as z = α 2 /ρκ: here, α is Seebeck coefficient, ρ the electric resistivity and κ is thermal conductivity.…”