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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 105
PROCEEDINGS OF THE NINTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by:
Paper 82
Closed-Circuit Simulation of a Thermoelectric-Power-Generator based Lamp Energy Harvest System M.-J. Huang and C.-C. Weng
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan M.-J. Huang, C.-C. Weng, "Closed-Circuit Simulation of a Thermoelectric-Power-Generator based Lamp Energy Harvest System", in , (Editors), "Proceedings of the Ninth International Conference on Engineering Computational Technology", Civil-Comp Press, Stirlingshire, UK, Paper 82, 2014. doi:10.4203/ccp.105.82
Keywords: thermoelectric power generator, closed-circuit model, waste-heat recovery, compact heat sink model.
Summary
A simulation model is proposed in this paper in order to efficiently capture the
thermoelectric effects in solving the heat transfer problem arising from the
thermoelectric-power-generator (TEG) based energy harvest systems. The test
system in the current study utilizes the waste heat of a commercial table lamp for
power generation. In this simulation model, the heat sink attached to the cold side of
the TEG chips is not truly simulated but approximated by the so-called compact heat
sink model. The Joule heat is modeled as a uniformly distributed volume heat
sources within the TE legs and the metal stripes. The Peltier heat is modeled as a
uniformly distributed surface source at the cold side and a uniformly distributed
surface sink at the hot side of the TEG chips. With these skills, the closed-circuit
temperature difference between the cold and hot sides of the TEG chips and
consequently the power generation rate can be directly and accurately obtained.
Such a closed-circuit simulation model can remedy the overestimation of the
temperature difference and the power generation obtained from the open-circuit
simulations.
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