A review of hydrocarbon two-phase heat transfer in compact heat exchangers and enhanced geometries |
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Authors: | Bernard Thonon |
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Affiliation: | aGreth, 50 av du Lac Léman, BP302, 73375 Le Bourget du Lac, France |
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Abstract: | Hydrocarbons are considered as alternative fluids for refrigeration, air-conditioning and heat pump applications. Pure butane, propane or their mixtures can be adopted, but due to their flammable properties, the systems have to be designed in such a way that the refrigerant charge is minimized. Therefore, compact heat exchangers and enhanced geometries are adopted in such systems. In this paper, the current state of the art for two-phase heat transfer calculations for pure hydrocarbons and their mixtures is reviewed and analysed. Recommendations are proposed for estimating evaporation and condensation heat transfer in various geometries including enhanced tubes as well as compact heat exchangers. |
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Keywords: | Refrigerant Hydrocarbon Survey Heat transfer Two-phase flow Heat exchanger Enhanced surfaceMots clé s: Frigorigè ne Hydrocarbure Enquê te Transfert de chaleur É coulement diphasique É changeur de chaleur Surface augmenté e |
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