Research and application of landscape water to ground-source heat pump system in subtropical region

Explores the heat exchange performance of ground heat exchanger under three different conditions of leakage, no-leakage and submerged tubing. The results show that water seepage is favorable to balancing the soil temperature field and more to heat exchange while less affecting water temperature of the original landscape water; when the spacing between two single submerged tubes is about 40 cm, the interaction of temperature field between tubes would become small; under the same conditions, the heat exchange capacity under leakage condition increases by 22.6% than that of no-leakage, and the average increment of each loop is greater than 10%; the heat exchange capacity of submerged tube is the highest of the three ways.