20 September 2011
A half of the Japanese land has been legislated as the heavy snowfall area by the government and more than twenty million people live there. In order to enhance urban appeal as well as the safety and comfort daily life, the snow melting system of the pavement
has been getting more recognition in the central are of the city. From energy conversation and CO2 reduction as well as saving running expense point of view, snow melting system using ground heat source heat pump as heating unit has been recognized as the most promising potential.
In this paper, the outline of the developed novel designing and performance prediction tool is explained first. Next, a new type heat pump with an inverter-control compressor and measurement of its performance are explained. Last, possibility region for direct circulating
for snow melting system is discussed by using developed designing tool and the effect of grid spacing of GSHP-SM with heat recharge applied collected solar energy through embedded piping in the pavement during summer is also discussed.