Abstract
For the purpose of obtaining fuodamental data required for the designing of Heat Pump System, two hotels and residential houses were surveyed about the quantity and temperature of water for various uses. It was found that the temperature of waste water from the guest rooms was more than 30℃ all the year and the most calorie (70〜90%) spent for heating water remained in the waste water. So it was adequate to the heat source for the Heat Pump. And it was assumed that the mechanical trouble caused by fair amount of hair. On the other hand, the combined drainage of residential houses was of low temperature, low calorie and bad quality. Therefore it was inferior compared to the waste water of the hotel in quality for a heat source of the heat pump.
