日本語フィールド
著者：Nobuhiko MATSUO, Hirofumi ARIMA, Keita SHIGYOU, Akio OKAMOTO,
Yasuyuki IKEGAMI題名：Heat Transfer Enhancement using Microgrooved Surface on Plate Evaporator for Small Thermal Energy Conversion発表情報：Proceedings of 3rd Asian Joint Workshop on Thermophysics and Fluid Scienceキーワード：Heat transfer enhancement, Heat transfer coefficient, Ammonia, Plate heat exchanger, Microgrooved surface概要：抄録：The aim of this study is to examine the optimum surface conditions for boiling heat transfer of the plate-type evaporator for small thermal energy conversion such as ocean thermal energy conversion system. The heat transfer coefficient of ammonia is measured for three different surface plates: a plate with a flat surface (S1), a plate with a vertical grooved surface (S2), and that with a horizontal grooved surface (S3). The measurement result showed that the boiling heat transfer coefficients of both the grooved surfaces were larger than that of the flat surface. In particular, the influence of grooved surfaces for heat transfer enhancement was found to be notable in the nucleate boiling region.英語フィールド
Author：Nobuhiko MATSUO, Hirofumi ARIMA, Keita SHIGYOU, Akio OKAMOTO,
Yasuyuki IKEGAMITitle：Heat Transfer Enhancement using Microgrooved Surface on Plate Evaporator for Small Thermal Energy ConversionAnnouncement information:Proceedings of 3rd Asian Joint Workshop on Thermophysics and Fluid ScienceKeyword：Heat transfer enhancement, Heat transfer coefficient, Ammonia, Plate heat exchanger, Microgrooved surfaceAn abstract：The aim of this study is to examine the optimum surface conditions for boiling heat transfer of the plate-type evaporator for small thermal energy conversion such as ocean thermal energy conversion system. The heat transfer coefficient of ammonia is measured for three different surface plates: a plate with a flat surface (S1), a plate with a vertical grooved surface (S2), and that with a horizontal grooved surface (S3). The measurement result showed that the boiling heat transfer coefficients of both the grooved surfaces were larger than that of the flat surface. In particular, the influence of grooved surfaces for heat transfer enhancement was found to be notable in the nucleate boiling region.