超音波を付与した鉛直冷却円筒面における水溶液の凍結と離脱(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 method to making ice slurry is one of key technology for cold-energy storage system. This study has been performed to study the use of ultrasonic wave to remove the crystal-ice layer formed around cylinder continuously. In the experiments, ethylene glycol solution was used. It is found that the ice crystals were removed actively at the region that amplitude of displacement caused by standing ultrasonic-wave was large, and they slided to the region that the amplitude was small. After accumulating for short period, the ice layers were removed. The release of supercooling and crystal growth, morphology of crystal ice, and removal condition in the ultrasonic field were discussed in relation to strength of the ultrasonic wave and temperature of the cooled plate.
社団法人日本機械学会の論文
2004-07-11