1904 LNG 冷熱利用システム : 第 4 報 : LNG 熱交換器内の着霜挙動の実験的検討

概要

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Two types of heat exchangers that exchange heat between air and combustible LNG were investigated. Heat transfer and pressure drop characteristics of these heat exchangers were measured under moist air conditions to know the effects of frost formation. The experimental result showed that the air side pressure drop at the downstream heat exchanger didn't increase when moist air was cooled below 223K by the upstream heat exchanger. Double-tube type heat exchanger is the more suitable for the upstream heat exchanger from a viewpoint of the rate of increase in pressure drop, while Plate-fin type heat exchanger requires a smaller space for the downstream heat exchanger below 223K. By combining these two heat exchanger types, a heat exchanger system is proposed, which cools 108 t/h of air below 130K with the pressure drop less than 30kPa within a space of 105m^2.
社団法人日本機械学会の論文
2002-09-20