China's annual sunshine duration of more than 2000 hours occupy two thirds of the land area, with sufficient solar energy and other low-grade clean energy. The heat pump system featuring cylindrical array volumetric heat exchange and phase change energy storage, which is developed by this project, makes full use of renewable energies such as solar energy and soil sources. The operating cost of the system is much lower than that of the traditional heating and cooling system. The system The promotion and utilization will help alleviate many contradictions arising from the high-carbon economy and reduce environmental pollution, with obvious economic and environmental benefits and good industrialization prospects. Collector research and development of collector heat collection efficiency and low cost, easy to maintain. Phase change thermal storage device not only can store solar energy during the day, but also can use night low-cost electricity storage soil and other low-energy heat, conducive to load shifting peak load, has broad market prospects.