The Analysis Of Under Ground Heat Exchanger Equipment Which Is Used On Soil Source Heat Pump

Ground source heat pump is a air-condition which get energy from shallow ground. It is a clean and sustainable energy-using equipment. The energy source of ground source heat pump have soil, under-ground water and surface water. The soil source heat pump are the system which have the lowest pollution and can not occupate water soure. It' s advantages get great attention in these years . Soil source heat pump is being more and more used in recent years. The core of soil source heat pump is U type under ground heat exchanger. The efficient of U type under ground heat exchanger has the most important role in soil source heat pump system. There has many reason which can influence the efficient of soil source heat pump. And its efficient of heat exchange can get the most influence in ground source heat pump.Firstly, this article analyse the ground source heat pump which use in Xi' an. Make an opnion that the soil source heat pump has great future in Xi' an.In this paper, CFD flow modeling software, for different U-tube type underground heat exchanger pipe (tube and smooth tube) for geometric modeling and mathematical modeling of different conditions, different soil conditions with the surrounding soil for the effect of thermal numerical simulation, obtained U-underground pipe heat exchanger with the surrounding soil environment of the temperature field. By analyzing the simulation results that the change can increase the U-tube type underground heat exchanger within the cooling pipe of water disturbance, thus increasing the U-pipe heat exchanger heat exchanger with the surrounding soil strength, increase the U-underground pipe heat exchanger efficiency of heat transfer devices.In addition, this paper will be considered for the porous soil body, simulating the existence of two tube-type soil seepage in case of heat transfer law of seepage through the data show that the soil is also affected underground U-pipe heat exchanger heat exchanger an important factor in performance. It can improve the soil temperature environment, so as to enhance the U-underground pipe heat exchanger heat exchanger efficiency and soil. As the soil temperature field gradient along the direction of seepage flow of a larger view of this situation, U-type underground heat exchanger pipe layout should consider the impact of this factor. This is in line with local conditions on the future design and layout of the underground U-pipe heat exchanger has a certain meaning of a draw.