凍結による管閉塞を防止する排水管の開発

抄録

This paper is concerned with a pipe blockage caused by freezing of drain water. In cold districts, snow on the roof melts because of the building's heat and flows down through a drainpipe. However, when the outside temperature is sufficiently low, the water inside the drainpipe freezes, possibly blocking the drainpipe with icicles. We developed a drainpipe that can prevent pipe blockage without heat sources, just by improving shape of the drainpipe inner wall. In addition, we confirmed that the anti-freezing effect could be improved with changing outlet shape of the drainpipe.