Large-diameter steel sleeve heat exchange device capable of extracting geothermal energy

Abstract

The invention relates to a large-diameter steel sleeve heat exchange device capable of extracting the geothermal energy, and belongs to the technical field of heating ventilation air conditioners capable of saving energy and reducing emission. The device mainly includes a ground source heat exchange well composed of a steel sleeve with the bottom being sealed, a PE inner tube, a filtering device, an impurity precipitation groove, a heat insulating plate and a water circulating flow diversion device. According to the connection relation, the steel sleeve is inserted into the ground, the ground source heat pump heat source side returned water is communicated with an upper end opening of the steel sleeve, and the PE inner tube is arranged in the steel sleeve; the filtering device is fixed inside the bottommost end of the PE inner tube; the impurity precipitation groove is formed in the bottommost end of the steel sleeve well; the heat insulating plate wraps the PE inner tube; the water circulating flow diversion device is arranged at a water inlet of the well and connected to the PE inner tube. By means of the large-diameter steel sleeve heat exchange device capable of extracting the geothermal energy, the problem that a soil source heat pump system is large in occupied space is solved, and the heat exchange amount of a single-opening ground source well is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of heating, ventilation and air conditioning in energy saving and emission reduction, is mainly used as a heat exchange source of a ground source heat pump air conditioning system, and is an efficient soil energy extraction device. Background technique [0002] The ground source heat pump air conditioning system is a new technology in the HVAC industry. It belongs to the energy saving and environmental protection technology encouraged by the state. Its energy collection system is mainly groundwater source and soil source. Although the groundwater source has strong heat exchange capacity and significant energy saving effect, the recharge of water source wells is a technical problem, and it is difficult to achieve 100% recharge, resulting in a serious waste of water resources, and some cities have begun to restrict the use. The soil source heat pump uses the characteristics of the soil to be constant temperatu...

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Problems solved by technology

So as to effectively solve the problem that the ground source heat pump system occupies a large area

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