Under the background of sustainable development and carbon neutrality,it is important to study the application of solar energy and ground source heat pump heating and cooling system in the building field.The design of a solar ground source heat pump coupling system and control parameter sensitivity analysis are studied by taking a hotel building in China's severe cold region as an example.TRNSYS software is used to set up the solar energy and soil source coupling system.Different system operation modes are established according to different working conditions,and different control strategies are formulated for different modes.By means of parametric simulation analysis,the effects of several key design parameters and control thresholds on the solar collector efficiency,the COP of the ground source heat pump system and the cold buildup of the buried tubes are analyzed.The quantitative analysis of the key influencing parameters is completed,and the effectiveness of the system form and control mode in solving the buried tube cold stacking problem is examined.
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