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Experimental analysis of local void fractions measurements for boiling hydrocarbons in complex geometry |
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| Authors: | L Aprin P Mercier L Tadrist |
| Institution: | 1. Laboratoire L.G.E.I., Equipe Risques Industriels et Naturels, Ecole des Mines d’Alès, 6 avenue de Clavières, 30319 Alès cedex, France;2. Laboratoire GREThE CEA/Grenoble, 17 rue des Martyrs, 38054 Grenoble cedex 9, France;3. Laboratoire I.U.S.T.I., Ecole Polytechnique Universitaire de Marseille, Technopôle de Château-Gombert, 5, rue Enrico Fermi, 13453 Marseille, France |
| Abstract: | The present paper is part of a research program on two-phase flows and heat transfer studies in tube bundles. An experimental study was carried out to analyse the void fraction for vertical two-phase flows. Boiling across a horizontal tube bundle for three hydrocarbons (n-pentane, propane and iso-butane) under saturated conditions is investigated. The experiments were performed on a tube bundle with 45 plain copper tubes of 19.05 mm outside diameter in a staggered configuration with a pitch to diameter ratio of 1.33. An optical probe has been developed to determine the local void fraction at the minimum cross section between the tubes. |
| Keywords: | Boiling flow Hydrocarbons Tube bundle Void fraction Flow map Statistical analysis |
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