Solar-Ground Source Heat Pump Research In Winter In The Area Of The Middle And Lower Reaches Of The Changjiang River

An up-to-date comprehensive review of the domestic and foreign research and ap-plication level of the Solar-Ground source heat pump is presented in this dissertation. The advantages and disadvantages of heat pump of varied heat source are analyzed. To the climate feature of the city of Wuhan, the applied practicability of the Solar-Ground source heat pump system has been demonstrated. In respect of theoretical research, the mathematical model for factor of assurance of solar energy and the mathematics model for heat pump sets are established. The solar en-ergy collector can be designed using its mathematical model .The ground heat exchanger of the Ground source heat pump is designed using IGSHPA and NWWA methods. Basing on Kelvin Line-Source theory, the ground temperature field in original state and endo-thermic process is simulated under Ground source heat pump intermittent operation, and the changing rule of temperature field around the tube is analyzed. Performance charac-teristics under dynamic and static operation condition of solar source heat pump, and runtime distribution ratio of Solar-Ground source heat pump system in varied operating condition under dynamic operation condition are analyzed. An example in Wuhan is simulated and the change of the parameters in different operation conditions is analyzed. We can make a conclusion from the simulation: The performance characteristics in dy-namic operation condition are better than static operation condition. For the condition limited, it only primarily discussed the operation condition in the cold district of the Solar-Ground source heat pump, and the simulation result should be verified by experiment. The purpose of the dissertation is to provide references for design and operation management of the Solar-Ground source heat pump system.