期刊
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
卷 33, 期 12, 页码 1602-1612出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1045389X211063944
关键词
Power harvesting; thermoelectric generator; heatsink; vapour chamber
This study demonstrates the first proof-of-concept use of vapour chambers coupled with traditional heatsinks to enhance the output power of TEGs. Numerical simulations and experimental tests showed that the use of vapour chambers significantly increased the performance of TEGs, providing efficient support for thermal energy harvesting solutions.
Thermoelectric generators (TEGs) have shown great potentials to supply low-power sensor nodes in aerospace applications due to their relatively small size, adequate output power and reliability. TEGs convert waste heat available at aircraft locations into a usable potential difference. However, TEGs' performance greatly depends on the use of passive cooling systems such as heatsinks to enhance their energy supply. This paper reports the first proof-of-concept use of vapour chambers coupled to traditional circular pin-fin heatsinks to enhance the output power of TEGs. Vapour chambers are compact and small capillary-driven heat spreaders that incorporate a cavity in their volume containing a working fluid to provide a high effective thermal conductivity. Numerical simulations and experimental tests revealed that the use of vapour chambers provided significant increase of the output power, with a maximum produced power of 28.2 W and a relative difference of 6.27 W against conventional energy scavenging configurations. Results demonstrate the high thermal cooling performance of vapour chambers to efficiently support thermal energy harvesting solutions designed for condition and structural health monitoring.
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