Mitigation of heat island phenomena by the application of heat disposal system to aquifers

在不同地质条件下的4个地点进行了现场试验，通过产生人工地下水流，交叉流动或水注入。现场试验表明，错流和约5 L/min的注水显著提高了热交换速率。利用地下水模拟器进行的敏感性研究表明，注水量过大会浪费水资源，1- 5L/min的注水量是最经济的。研究还表明，注入水的温度应接近地面温度，以提高能源效率。

Field tests were carried out at four locations of various geological settings to enhance the heat exchange rate at ground heat exchangers in ground source heat pump systems by generating artificial groundwater flow, i.e., cross flow or water injection. The field tests showed that the cross flow and the water injection of approximately 5 L/min remarkably enhance the heat exchange rates. A sensitivity study using a groundwater simulator showed that the excessive water injection rate wastes water resources and the injection rate of 1-5 L/min is ,ost cost-effective. The study also showed that the temperature of the injected water should be close to the ground temperature to improve the energy efficiency.