抄録
As to the snow melting system where geothermal energy is transported from underground to road surface by circulating water in winter, while solar heat is collected on road surface and stored into underground in summer, the experimental demonstrations have been conducted for several years in Fukui city at three places such as parking lot and bridges. This system showed enough heat storage and snow melting power for road surface area of several thousand m^2 order, and also demonstrated good long-term reliability. Through numerical simulations of this system, the non-dimensional correlation for many system parameters was derived, which shows possibility of simplification of evaluation process for system performance.
