ダイナミック型氷蓄熱を対象とした水-油エマルションによる二重管内連続製氷(蓄熱技術,空気調和・冷凍・エネルギー有効利用技術)

概要

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A dynamic-type of ice making cold thermal energy storage system using water-silicone oil emulsion with silane-coupler agent, (C_3H_5O)_3SiC_3H_6NH_2, has been proposed. Ice slurry was formed in a coil-shaped double tube heat exchanger. Brine was circulated in the outer tube, and the emulsion was circulated in the inner tube to form ice slurry continuously. Inner tube was made of fluororesin which was used to prevent ice from adhering to the cooling wall. This system was operated under various cooling conditions (flow rate of the emulsion and brine temperature). The operation of this system was continued for more than ten hours or until the tube choked. During the experiments, oil content and IPF_<in> (ice packing factor of emulsion at the inlet of the heat exchanger) were measured. It was found that the tube choked condition (the oil content of emulsion became under 5vol.% or IPF_<in> became over about 40wt.%) didn't change though the initial oil content was increased. And the tube choked when the oil content became under 5vol.% in case of an increased initial flow rate. But ice was formed continuously over about 40wt% of IPF_<in>.
一般社団法人日本機械学会の論文
2004-07-11