直管および蛇管内での非水溶性不凍液を用いたリキッドアイス生成挙動

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タイトル別名
  • Formation Behavior of Liquid Ice in Straight and Coiled Pipes Using Water-Immiscible Coolant.
  • チョクカン オヨビ ジャカンナイ デ ノ ヒ スイヨウセイ フトウエキ オ モチ

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Liquid ice is useful as a cold thermal storage material. In our previous work, a heat transfer experiment in a 22 mm diameter vertical straight pipe was carried out, and the empirical correlation of capacity coefficient of heat transfer Ka [-] was obtained.<BR>In this work the effects of pipe diameter on Ka for straight-and coiled-pipe systems have been investigated. Experimental results showed that the coiled-pipe system was useful for continuous formation of liquid ice and enabled a compact device. For the straight-pipe system, Ka was proportional to the ratio of water and coolant mass flow rates. For the coiled-pipe system, on the other hand, Ka was independent of pipe diameter and was expressed only by an exponential function of the ratio of water and coolant mass flow rates.

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