earticle

영어

Coastal area where have free cold and heat source provided by a large amount of seawater, is ideal sites for the application of seawater-source heat pump (SWHP) system to provide cooling and heating. Due to SWHP system providing higher energy efciency and protect environment, it has gradually been applied especially to some governmental key projects in China. In the first phase of Metro Qingdao, eight subway stations are close to the sea. It is convenient to pumping seawater as cooling source, so utilizing SWHP system cooling the subway stations is planed. This paper discussed the feasibility of utilization of SWHP system, from two intake ways. Firstly, bedrock fracture structure on coastal zone was analyzed to study the feasibility of pumping deep fracture seawater for cooling source of SWHP. And the water inflow of pumping test shows that it is infeasible by pumping bedrock fissure water as cooling source. Secondly, the feasibility of pumping surface seawater is discussed. And surface seawater temperature is low enough as SWHP system cooling source. Then SWHP system operation ways are designed preliminarily, and several solutions are proposed to solve troubles which have happened during the use of SWHP system, such as the location of intake and outfall seawater system, seawater causticity and clean technology. The result indicates that Qingdao has great potential for applying surface seawater as heat pump system cooling source in Qingdao metro.