| Energy is one of elements human being needed to survive. It is important strategic material for economy development and important material base for social living in modern times. The problem of Chinese energy is faced when bringing continuable development stratagem. As all know, Chinese coal resource accounted for 69.4% in all energy consumption. Chinese energy consumption framework is without reason. China is a country in which the first energy is coal resource. Architecture consumption energy, industry consumption energy and traffic transport consumption energy are the most three aspects on once energy consumption in the world. Architecture consumption energy has a lager proportion in social energy consumption, and is about 30~40% in developed countries. Town and city population in Chinese heating areas is a proportion of 13.6% or so, but heating energy arrives to 9.6% in full energy consumption.Two or more resources should be together utilized in the energy framework of diversification renewable energy, because this way can improve use efficiency of every resource by the way of bringing its advantages into play. Under this condition, combing solar collector and ground source heat pump heating technology is brought forward as new way of using geothermal and solar energy. It is necessary and timing.The combing solar collector and ground source heat pump heating system was mainly consisted of synchronous tracking solar collector, underground heat exchangers, heat pump and fan coil system. It is a complicated system, its'operation characteristics reflect the coupling and matching relationship between underground heat exchangers and solar collector. According to development situation and research trends of combing heating technology, a multifunctional combing heating experimental table was built in Jilin University. The system process, data collection system and auto control system all reached the required or expected standard. The establishment of experimental table laid a good foundation for further research on optimization matching of ground source heat pump and solar collector, provided experiential learning to popularization and application of green energy resources in China.Reference to combing heating experimental table, simplified heat transfer model of heat pump, cylinder source heat transfer model of underground heat exchangers under constant heat flow and variable heat flow and hourly solar radiation model in ChangChun area were built. Acooring to different coupling relationship in different operation mode, the dynamic simulation model of the whole combing heating system was established.Different operation mode were simulated and analyzed on the base of built combing heating dynamic simulation model. Form the simulation result, we can find that series operation mode is suitable to combing heating system with focus synchronous tracking solar collector, parallel operation mode is suitable to combing heating system with fixed flat plate solar collector. In series operation mode, heating system will gain higher efficiency, if the heat-carrying fluid flows through underground heat exchangers first and then through solar collector. In parallel operation mode, the ratio of flow rate in underground heat exchangers to the total flow rate in heat pump should be set from 0.6 to 0.8 to guarantee the higher heating efficiency.The more bigger the heat-carrying fluid flow, the higher efficiency of underground heat exchangers and solar collector, the lower efficiency of heat pump. After flow mr>0.85kg/s, the influence of flow increase over inlet temperature of underground heat exchangers and solar collector become more and more little, therefore, heat-carrying fluid flow should be set about 0.85kg/s.Ignore the influence of solar energy storage, every square meter solar collector equals to 4.309 meters double U underground heat exchangers in winter heating operation condition. But this conclusion has a certain limitation, it can't embody the importance of solar energy in combing heating system completely.Numerical simulation and optimization analysis were made by the combing heating simulation model in this paper. But to be limited to conditions, the simulation research is only concerned in heating operation condition in winter, the operation condition in other area and other season was not considered. The simulation result should be verified by experiment data. On the other hand, the simulated operation mode is continuous heating operation in 24 hours, therefore, the simulation can't reflect temperature variation of every unit in combing heating system in intermittent operation mode or in term of the whole heating season. Combing solar collector and ground source heat pump heating system is a green energy utilization technology with great development potentialities, but the research is still rather raw at present, many Basic theories remained to be studied deeply.
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