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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 105
PROCEEDINGS OF THE NINTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY
Edited by: P. Iványi and B.H.V. Topping
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

Full Bibliographic Reference for this paper
M.-J. Huang, C.-C. Weng, "Closed-Circuit Simulation of a Thermoelectric-Power-Generator based Lamp Energy Harvest System", in P. Iványi, B.H.V. Topping, (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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