The Principle of Snow Disaster Prevention Net and its Application to a Prototype Roof

概要

論文の詳細を見る
A device melting snow on the roof named 'snow disaster prevention net' has been proposed. This device consists of net and rod essentially, where the roof is covered with the net and the rod is set beneath the net along the pitch of the roof. The mesh size of the net is small enough, so that the snow can not pass through the net, and thus a small space between the net and the roof is always maintained. Once the snow starts melting due to the solar heat or any other heat, the produced water will gather in this small space (or water lane)., and then the water will flow through it. The amount of the water may increase as going from the ridge of the roof to the edge. When the water level becomes higher than the net, the water has a direct contact with the snow, so that the snow melting process characteristic to this device is operating: This process results in an additional amount of the water, to be used for melting another snow subsequently, and this process is repeated in many times.<BR>It is found that this device is particularly useful to melt the snow at the edge of the roof that is the most critical part of the snow load on the roof, and can reduce the snow load by about 10-20 percents without any heat energy except the solar energy.
Japan Society of Civil Engineersの論文