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An evaluation of models and correlations predicting flow patterns in mini-tubes is described in this paper and final recommendations are made for a way forward. Flow boiling patterns of R245fa in a 1.1mm diameter copper tube were used in this evaluation. The experiments covered an experimental range of mass flux 100–400kg/m2s, heat flux 3–25kW/m2, inlet pressure of 1.85 and inlet subcooling of 5K...
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