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Performance analysis of multi-stage thermoelectric coolers / G. Karimi in International journal of refrigeration, Vol. 34 N° 8 (Décembre 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 8 (Décembre 2011) . - pp. 2129–2135 Titre : Performance analysis of multi-stage thermoelectric coolers Titre original : Analyse de la performance des refroidisseurs thermoélectriques multiétagés Type de document : texte imprimé Auteurs : G. Karimi, Auteur ; J.R. Culham, Auteur ; V. Kazerouni, Auteur Année de publication : 2012 Article en page(s) : pp. 2129–2135 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Thermoelectricity  Refrigerator  Cooler  Heat  flux  Thermal  analysis  Performance Résumé : Multi-stage thermoelectric coolers offer larger temperature differences between heat source and heat sink than single-stage thermoelectric coolers. In this paper, a pyramid-type multi-stage cooler is analyzed, focusing on the importance of maximum attainable target heat flux and overall coefficient of performance, COP. Having considered the COP and the thermal resistance of a heat sink as key parameters in the design of a multi-stage thermoelectric cooler, analytical formulas for COP and heat sink thermal resistance versus working electrical current are derived. For a fixed cooling target heat flux, the ratio of the heat sink thermal resistance to the respective single-stage value and the attainable COP in a cascaded cooler are determined as a function of the number of stages. Numerical simulations clearly indicate that the thermal resistance of the hot side heat sink is the controlling factor in determining the overall performance of a multi-stage thermoelectric cooler. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711001216 [article] Performance analysis of multi-stage thermoelectric coolers = Analyse de la performance des refroidisseurs thermoélectriques multiétagés [texte imprimé] / G. Karimi, Auteur ; J.R. Culham, Auteur ; V. Kazerouni, Auteur . - 2012 . - pp. 2129–2135. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 8 (Décembre 2011) . - pp. 2129–2135 Mots-clés : Thermoelectricity  Refrigerator  Cooler  Heat  flux  Thermal  analysis  Performance Résumé : Multi-stage thermoelectric coolers offer larger temperature differences between heat source and heat sink than single-stage thermoelectric coolers. In this paper, a pyramid-type multi-stage cooler is analyzed, focusing on the importance of maximum attainable target heat flux and overall coefficient of performance, COP. Having considered the COP and the thermal resistance of a heat sink as key parameters in the design of a multi-stage thermoelectric cooler, analytical formulas for COP and heat sink thermal resistance versus working electrical current are derived. For a fixed cooling target heat flux, the ratio of the heat sink thermal resistance to the respective single-stage value and the attainable COP in a cascaded cooler are determined as a function of the number of stages. Numerical simulations clearly indicate that the thermal resistance of the hot side heat sink is the controlling factor in determining the overall performance of a multi-stage thermoelectric cooler. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711001216