フロロアルコール-水混合媒体の自然対流凝縮

概要

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Experiments and theoretical analysis were carried out to investigate the characteristics of natural filmwise condensation of a binary mixture of vapors on a vertical plate. Both PFP-H_2O and TFE-H_2O mixtures, which are azeotropic and nonazeotropic respectively, were used. These mixtures are considered to be the most promising working fluids for the Rankine cycle for moderate-temperature thermal-energy utilization. The dependencies of the heat transfer coefficient on the bulk concentration of water and the bulk-to-wall temperature difference were clarified. A similar solution (or pseudo-similar solution) can predict the experimentally measured heat transfer coefficient. The effects of the finned surfaces on the heat transfer performance were also investigated for two fin shapes.
一般社団法人日本機械学会の論文
1989-07-25