中文摘要：

利用沿海地下含水层结构输运冷媒水，传递来自海洋的冷量，以构筑大中型城市地区性节能的建筑空调系统，从而实现大规模区域的廉价空调供冷。应用控制容积法和交替方向隐式求解方法，对含水层中的热量运移进行数值模拟，研究分析热弥散系数、岩层比热容及水力传导系数对热量运移过程的影响。研究证明，该方案有效降低了含水层中的地下水温度；借助大流量、大扬程的抽水井将冷媒水过量注入地下，能够有效控制地面沉降，促成已沉降地面的微量回升。此技术是一项符合可持续发展原则的地区性空调技术，具有节约能源、保护环境的积极意义。

英文摘要：

Chilled water that carries the cooling capacity of the sea through underground aquifers can be used to construct regional energy-saving air-conditioning systems for districts in coastal cities. Thus, a large-scale economic air-conditioning system can be realized. The thermal transport of an underground aquifer was simulated with the control volume method （CVM） and the alternating direction implicit method （ADI）. The influence of the thermal dispersion coefficient, the rock heat capacity and the hydraulic conductivity on thermal transport was investigated. The results indicate that the temperature of groundwater will decrease effectively. When the chilled water is injected into the underground aquifer through large-flowing and high-lifting injecting wells, land subsidence will be effectively controlled, and the subsided land will lift to a certain extent. This regional air conditioning technology accords with principles of sustainable development, and it provides meaningful energy saving and environmental protection.