Simulation on Temperature Variation of Underground Water in Water Source Heat Pump

Water source heat pump is a kind of energy-saving and environmental protection technology, which was applied extensively in recent years. The temperature variation of underground water is the most important problem for the research of water source heat pump. In this paper, the temperature variation of underground water in water source heat pump system with pair of wells (1 pumping well and 1 recharging well), three wells (1 pumping well and 2 recharging wells) and group wells (2 pumping wells and 3 recharging wells) was simulated and analyzed. And the changing tendency and amplitude of underground water, influenced by different arranging way and operating strategy, were researched. Through analyzing and discussing deeply, the best arranging way, optimum wells distance and reasonable operating strategy were obtained. The conclusions can make a reference to the design of actual energy efficiency projects.