30 May 2005

DEVELOPMENT AND APPLICATION OF AN INNOVATIVE SHALLOW GROUNDWATER HEAT PUMP SYSTEM


Geothermal energy from the shallow ground is an abundant energy resource with wide geographic
distribution. The energy exists in the subsurface ranging from about 30 to several hundred meters and its
temperature is relatively stable. Its utilization is now spreading at high speed worldwide.
This paper presents an original and innovative technology for utilization of shallow geothermal
energy—the “Single Well System of Supplying and Returning Water” technology which was invented by
Ever Source Science & Technology Development Co., Ltd(ESSTD). The system operates in a sustainable
manner with high efficiency and provides buildings with heating & cooling as well as with domestic hot
water. Since the system came out in 2001, it has attracted lots of attention of users and government
agencies in China. This paper describes its principle successfully operating systems in various parts of
China.