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B7: Device and system performance
We propose a thermoelectric generator pulse operated with important improvement in power / volume, cost/performance and conversion efficiency over thermoelectric generators built by traditionally technology. This is manufactured with traditionally thermoelectric materials and a new design and operation technique.
The heating is made using concentrated solar energy and for cooling is used radiation.
This paper describes the manufacturing process of thermoelectric unit, the operation technique and first experimental results at lab level.
Technical barriers of decreased conversion efficiency met in traditional TE generators will be lifted by using “ultra-fast” electrical pulses [1] and customized operating regime [2] of such thermoelectric devices. Regarding the assembling of TE devices, novel method will be applied for minimizing thermal dissipation [3].
[1] M. Apostol, M. Nedelcu, “Ultrafast thermoelectric conduction”, IEEE Proc. 20th Int. Conf. Thermoelectricity, Beijing, China 2001, p.42
[2] M Apostol, M Nedelcu, “Pulsed thermoelectricity”, J. Appl. Phys. 108 023702, (2010)
[3] Pulsed Thermoelectric Machine. M. Nedelcu M. Apostol, J. G. Stockholm, Proceedings of IX Conference Polish Ceramic Society – Zakopane Sept.