Novel steel pipe energy pile capable of improving utilization efficiency of shallow layer geothermal energy and manufacturing method thereof

Abstract

The invention discloses a novel steel pipe energy pile capable of improving the utilization efficiency of shallow layer geothermal energy and a manufacturing method thereof. The device comprises steel pipe pile bodies, heat transfer tubes, heat transfer tube sleeves, an air-conditioning system, a semiconductor temperature difference power generation system and a semiconductor temperature difference power generation cooling system. The air-conditioning system comprises heat-exchange equipment. Liquid in each heat transfer tube conducts heat exchange with the soil mass at first, and then the indoor air temperature of a building can be adjusted through the upper heat-exchange equipment. Electric energy obtained by the semiconductor temperature difference power generation system and the semiconductor temperature difference power generation cooling system can supply electricity to earth surface electric equipment. The semiconductor temperature difference power generation technology is adopted in the system, and the temperature difference between the liquid in the heat transfer tubes and the soil mass is used for power generation. The electric energy generated by the temperature difference power generation cooling system can drive underground radiating tubes, the electric energy generated by the temperature difference power generation system can provide driving force for a medium and small-power water pump of the air-conditioning system, and therefore the circular flow speed of the liquid in the heat transfer tubes is increased, and heat cycle efficiency and heat exchange efficiency of the energy pile heat transfer tubes are improved.

Description

technical field [0001] The invention relates to a technology for utilization of shallow geothermal energy, which is mainly applicable to technical fields such as steel pipe pile foundations, and in particular relates to a novel steel pipe energy pile and a manufacturing method thereof which can improve utilization efficiency of shallow geothermal energy. Background technique [0002] Shallow geothermal energy, also known as shallow geothermal energy, belongs to low-grade renewable clean energy, and is one of the most valuable development and utilization thermal energy resources in the earth's interior under the current technical and economic conditions. At present, in the development and utilization of shallow geothermal energy, it is mainly to directly use the characteristics of the constant temperature of the shallow soil all year round, and use the heat pump cycle to achieve the effect of heating the ground buildings in winter or cooling in summer. Ground source heat pump...

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Problems solved by technology

[0031] Purpose of the invention: In order to overcome the above-mentioned deficiencies and defects, solve (1) the problem of low heat exchange efficiency in shallow geothermal energy utilization caused by energy piles in the utilization of shallow geothermal energy due to the limitation of the total amount of shallow geothermal energy in space and time , (2) In the existing shallow geothermal temperature difference power generation schemes, the construction cost of drilling and buried pipes is high, the land area or underground space is large, and the temperature difference between the soil itself and the medium is not used for direct power generation; combined with traditional steel Pipe pile foundation, shallow geothermal energy utilization and semiconductor temperature difference power generation technology, propose a new type of steel pipe energy pile and its manufacturing method to improve the shallow geothermal energy utilization efficiency; combined with the characteristics of the steel pipe pile itself, through the steel pipe pile Different forms of heat transfer tubes, heat transfer tube casings, semiconductor thermoelectric power generation systems, and semiconductor thermoelectric power generation and cooling systems are arranged on the inside or outside to construct a new type of steel pipe energy pile with the functions of generating electricity and improving the conversion of shallow geothermal energy. In addition to the power supply of electrical equipment, it can not only improve the thermal cycle efficiency of the air conditioning system, but also improve the heat exchange efficiency of the heat transfer tube in the ground, and indirectly increase the contact area between the heat transfer tube and the soil, and improve the utilization rate of geothermal energy per unit area. Efficient use of green and clean energy, and ultimately achieve the goal of energy conservation and emission reduction

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