Basic research on ice-storage process of alcoholic solution ice-slurry for high performance cold energy storage

通过实验研究了酒精冰浆存放一晚后的融化特性。在第一年，酒精冰浆在两种条件下储存：(1)恒温略高于初始熔点温度，。(2)固、液区温度周期性变化。精确观测了冰晶形状和大小的变化，并测量了空气、水和冰的体积比沿冰的高度。一层。经证实，经过一晚的储存，冰层顶部的冰晶变成了更大的冰块。并阐明了这一变化的机理。第二年，在第一年结果的基础上，实验研究了自上而下热水簇射在冰层融化过程中“水路”的形成。对于冰晶尺寸均匀和不均匀(顶部较大)的冰晶层，阐明了“水路”的形成过程。

Experiments were performed to clarify the melting characteristics of alcoholic ice-slurry stored for one night. In the first year, alcoholic ice-slurry was stored under two conditions ; (1) constant temperature slightly higher than the initial melting point temperature,. (2) periodic temperature varying between solid and liquid regions. The variations in crystal shape and size of ice were observed precisely, and the volumetric ratio of air, water and ice was measured along the height of the ice. layer. It was confirmed that the ice crystal at the top of the ice layer changes to a larger lump of ice through a storage of one night. The mechanism of the change was also clarified. In the second year, formation of "water path" in an ice layer through the melting process by a hot water shower from the top was investigated experimentally, based on the result of the first year. Processes of "water path" formation were clarified for the layer composed of uniform and non-uniform (larger one at the top) size of ice crystal.