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Design and testing of a locally made loop-type thermosyphonic heat sink for stove-top
Technical note
Design and testing of a locally made loop-type
thermosyphonic heat sink for stove-top
thermoelectric generators
R.Y. Nuwayhid*, R. Hamade
Department of Mechanical Engineering, Faculty of Engineering and Architecture,
American University of Beirut, Riad El Solh 1107-2020, Beirut, Lebanon
Received 16 July 2004; accepted 18 September 2004
Available online 23 November 2004
Abstract
The performance of a thermoelectric generator, among other aspects, depends on the use of an
effective heat sink. While forced cooling using either air or water (or other coolants) is efficient, it is
parasitic on the generated power and/or bulky and inconvenient. Heat pipes are known to be highly
effective heat transport devices. Coupled to a thermoelectric generator, these can be used to give
acceptable power output. Basing the cooling on water gives low-cost, simplicity, safety, together
with good performance. In this work, the design and general performance of a small single-module
thermoelectric generator configured for a stovetop waste-heat application and coupled to a locally-
made thermosyphonic loop-type heat sink was undertaken. Development and performance cctesting
gave mixed results and further numerical and experimental study is under way.
q 2004 Elsevier Ltd. All rights reserved.
Keywords: Thermoelectric generator; Thermosyphonic heat sink; Stove top1. Introduction
Thermoelectric power generation has been in existence for over 100 years. The
efficiency of conversion has not managed to exceed about 10% for temperature ranges ofRenewable Energy 30 (2005) 1101–1116/locate/renene0960-1481/$ - see front matter q 2004 Elsevier Ltd. All rights reserved.
doi:10.1016/j.renene.2004.09.008
* Corresponding author. Fax: C961 1 744 462.
E-mail address: rida@.lb (R.Y. Nuwayhid).
Nomenclature
Cf friction coefficient
Cp liquid specific heat
Dx grid size [m]
g gravitational acceleration [msK2]
h heat transfer coefficient [WmK2 KK1]
hfg latent heat of vaporization [kJ kg
K1]
Hp dept
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