| With the growth of the international energy issues, building energy savings will be big trend around international architectural of sustainable development concept, as well as the important task of China's economic society faces. Ground source heat pump as a typical of renewable energy technology used widely in the world plays a major role in building energy field. This paper designed a ground source heat pump air conditioning system for a residential building. Study on the characteristics of the heat transfer for the underground heat exchanger is the key to popularize GSHP system. After the research and analysis of the existing underground heat exchanger models, the operating performance 3D model between the underground u-shaped heat exchanger and the surroundings soils was proposed. Simulation research of ground source heat pump various operation conditions mainly include: heat pump operation of winter under the conditions of 1 hour, 24 hours, 15 days, 90 days, The summer heat pump working conditions in different times; buried pipes of different decorate a form; different soil thermal physical parameters; different soil of initial temperature; different backfilled material the thermal conductivity; different velocity; different spacing of buried pipes factors, it is concluded that the soil temperature field in every direction distribution situation, understand their in the distribution of heat pump running around. Analysing the temperature distribute of ground in three dimension and the heat exchange resistance getting some measures that enhance heat exchange. fully understand the underground soil temperature in the distribution of heat pump running around, and proposes the u-shaped tube heat transfer method, be helpful for reasonable design of buried pipes under heat the buried depth, the actual operation, improve the performance of the system, and the economy of the coefficient of engineering design and construction has the extremely vital significance. |
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