BACKGROUND, HISTORY AND STATUS OF GEOTHERMAL UTILIZATION IN TIANJIN

摘要

The Tianjin geothermal field is a typical lowtemperature system, which is located in the middlelower reaches of the Haihe River System on the North China plain. The geothermal distribution area is 8700 km2, about 77% of the total Tianjin area. 10 geothermal anomalies are founded. As a clean energy, the geothermal resource is widely used for space heating, potable water and agriculture etc. The annual production rate reaches 2450m3 and the space heating area was about 12 Mm2 in 2007. The geothermal reserves of 4 geothermal fields have been proven and the attainable resources are 5088><104m3/a in 2005. It is necessary to enhance the prospecting precision, expanding the exploitation area and strengthen the basic technology research.