THE FIELD EXPERIMENT AND SNOW MELTING PROCESS CALCULATION ABOUT THE ROOF SPRINKLING SYSTEM WHICH PREVENTS THE ROOF SNOW

Abstract

 This paper focused on the roof sprinkling system which prevents damage caused by roof snow. This system can prevent the snow accumulate by sprinkling water before the snow piled up on the surface of roof. By elucidating how sprinkling water temperature decreased, finding the optimal sprinkling condition, we aim to make the roof sprinkling system practical.
 From the experimental results, when sprinkling water, we found that there is a strong linear relationship between the roof surface temperature and the sprinkling water temperature. So by adjusting the springkling water temperature, it is considered that the roof surface temperature can be controlled. Also, in the process of sprinkling water, by considering the heat loss, using formulas which is generally used in heat transfer engineering, we calculated the decrease of sprinkling water temperature. Furthermore, the formulas of the heat loss also considers the physical condition of the roof. So they are not only fitable for experimental facility. They can be also applied to the actual roof.