A PCC pile device for combined cooling, heating and power generation and its manufacturing method

Abstract

The invention discloses a PCC pile device for co-generation of cooling, heating and power, which comprises a closed-mouth PCC pile, a heat exchange tube and heat exchange equipment arranged in the closed-mouth PCC pile, and a thermoelectric power generation system; The water pump I and the valve control are controlled to realize the heat exchange between the heat exchange tube, the heat exchange liquid and the soil body. After the heat exchange is completed, the liquid in the heat exchange tube is connected with the upper heat exchange equipment for air conditioning to form an air conditioning system; the thermoelectric power generation system includes a set of The semiconductor thermoelectric power generation device I on the inner side wall of the closed PCC pile, and the semiconductor thermoelectric power generation devices II and III arranged on the outer side wall of the heat exchange tube respectively form a shallow geothermal energy thermoelectric power generation system with the DC / DC converter, the battery, the water pump II and the wire. , using the temperature difference between the liquid and the soil in the heat transfer tube to generate electricity for the upper building. The invention effectively realizes the composite utilization of the PCC piles in mechanics, heat and electricity, realizes the multi-objective effective utilization of shallow geothermal energy on demand and at wrong time, and improves the energy utilization efficiency.

Description

technical field [0001] The invention relates to a shallow geothermal energy utilization technology, which is mainly applicable to technical fields such as building pile foundations, and in particular relates to a PCC pile device for combined cooling, heating and power generation and a manufacturing method thereof. 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 technology is one of the most commonly u...

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Problems solved by technology

[0038] 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 scheme, the construction cost of drilling and buried pipes is high, it is difficult to construct in places with relatively large building volume ratios, the land area or underground space is large, and the relationship between the soil itself and the medium is not used. The problem of direct power generation due to the temperature difference between them; combined with the traditional PCC pile foundation, shallow geothermal energy utilization and semiconductor temperature difference power generation technology, a PCC pile device for combined cooling, heating and power generation and its manufacturing method are proposed. The thermoelectric power generation device and the ground source heat pump device are systematically buried in the pile foundation of the building so that it is combined with the building structure

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