An Analysis of Geothermal Heating and Engineering Cost in Tianjin, China

Abstract

Tianjin is a region with fairly rich low temperature geothermal resources. Its climate and soaring price of raw coals have made geo hating in Tianjin develop rapidly over the past 5 years. The types of heating systems fall into 3 categories and the primary factors for using temperature drop are 5. According to economical analysis, the optimal discharge temperature in the space heating is about 43°C and the minimum discharge temperature 35°C approximately. An analyses of a typical engineering costs involved shows that the advantages of geo space heating are not notable when compared with burning coals. However, to reduce air pollution, the state and general public are ready to support the development of such geothermal wells as deep as 3,000 m for space heating irrespective of their sole engineering costs.