K-2220 液体空気利用エネルギー貯蔵システム : 第4報 : 新方式LNG熱交換器の実験的検討(J13-1 新発電技術の最前線 : 高効率火力発電および燃料電池発電)(J13 新発電技術の最前線 : 高効率火力発電および燃料電池発電)

概要

論文の詳細を見る
A gas turbine system that makes full use of the cold heat of LNG is studied. Two new style heat exchangers were investigated that exchange heat between air and combustible LNG. Channels of each fluid are structurally independent with each other to improve the safety. Heat transfer characteristics of these heat exchangers were measured to know a special characteristic of these heat exchangers: thermal contact resistance between the tube and the fin at low temperature conditions. The thermal contact resistances at normal temperature were 0.25m^2K/kW for the parallel tube type, and 0.5m^2K/kW for the triple tube type. The resistance augmented at the liquid nitrogen temperature due to thermal shrinkage of the tube. The effect of this augmentation on heat transfer rate of an overall heat exchanger was 13% and 11% respectively, for each heat exchanger type.
社団法人日本機械学会の論文
2001-08-22