To improve the performance of ice thermal storage systems, the problem of freezing on the cooling surface must be addressed. One of the authors has proposed a new ice making method in which a magnetic fluid prevents water from freezing on the cooling surface. Thus, we investigated experimentally the effect of shape control of magnetic fluid using a magnet on freezing of supercooling water. The shape changes and motion of magnetic fluid, which are controlled by controlling the magnetic field, have a slight effect on the supercooling phenomenon.
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