A Study of Snow Melting Mechanism by Solar Radiative Absorption Material

利用太阳辐射吸收材料(黑钙粉)从上表面融化雪层，实验研究了雪层的融化行为。实验在太阳辐射吸收材料密度、环境温度、太阳辐射强度和积雪密度等各种因素下进行。结果表明，促进雪层融化存在最佳的吸波材料密度。在吸波材料密度较低的情况下，由于吸波材料的聚集作用导致雪面的出现，导致积雪融化速率降低，而在吸波材料密度较高的情况下，随着吸波材料保温效果的提高，积雪融化速率降低。根据不同参数的取值范围，建立了实用的降雪无因次关联方程。

The melting behavior of a snow layer was investigated experimentally for the case where the snow layer was melted from the upper surface by the aid of solar radiative absorption material ( Black Calium Carbonate Powder ). The experiments were carried out under various factors of solar radiative absorption material density, environmental temperature, solar radiation intensity and snow density. It was clarified that the optimum density of the absorption material existed for the enhancement of the snow layer melting. in the low density of the absorption material, the appearance of snow surface due to the gathering effect of the absorption material brought the decrease of snow melting rate, on the other hand in the high density of the absorption material, the snow melting rate was decreased with an increase of thermal insulation effect of it. The useful non-dimensional correlation equations for the snow meting were derived in accordance with various parameter's ranges.