A strategy for high specific power pyroelectric energy harvesting from a fluid source

0502151 - FZÚ 2019 RIV US eng J - Článek v odborném periodiku
Maheux, E. - Hrebtov, M. Yu. - Sukhorukov, G. - Kozyulin, N. N. - Bobrov, M. S. - Dobroselsky, K. G. - Chikishev, L. M. - Dulin, V. M. - Yudin, Petr
A strategy for high specific power pyroelectric energy harvesting from a fluid source.
Applied Physics Letters. Roč. 111, č. 23 (2017), s. 1-5, č. článku 233903. ISSN 0003-6951. E-ISSN 1077-3118
Institucionální podpora: RVO:68378271
Klíčová slova: thermodynamic processes * ferroelectric materials * thin films * fluid flows * thermoelectric devices
Obor OECD: Thermodynamics
Impakt faktor: 3.495, rok: 2017

Conversion of waste heat into usable electricity is now one of the important strategies for saving natural resources and minimizing impact on the environment. In contrast to Seebeck devices, utilizing a temperature gradient, pyroelectric scavengers use temporal temperature oscillations. Here, optimal strategies for pyroelectric energy harvesting are theoretically investigated from the point of view of non-stationary heat exchange for the application-relevant case of harvesting with a pyroelectric lamella from a fluid heat source. It is shown that for a fixed lamella thickness by choosing appropriate phase shift between the temperature oscillations and the voltage on the pyroelectric lamella, one can effectively operate at high frequencies and achieve a two to three-fold increase in specific power with respect to the classical Olsen cycle. A further increase in specific power is achieved by thinning down the lamella.

Trvalý link: http://hdl.handle.net/11104/0294110