Graphene modified energy pile

Abstract

The invention discloses a graphene modified energy pile, and relates to the technical field of ground source heat pumps and pile foundations. The graphene modified energy pile comprises a pile body poured by a graphene and concrete mixture, and a hole is formed in the inner center of the pile body; a spiral pipe-shaped heat transfer pipe is arranged in the hole in the pile body, and the bottom ofthe heat transfer pipe is connected with a return pipe; the positions between the interior of the pile body and the heat transfer pipe as well as between the interior of the pile body and the return pipe are fully filled with filler, and the middle sections of the heat transfer pipe and the return pipe are bound on a reinforcement cage; heat conducting liquid is loaded in the heat transfer pipe and the return pipe, and a pile cap is arranged at the top of the pile body in a sealed mode; the heat transfer pipe and the return pipe vertically extend out of the pile cap, and ports, outside the pile cap, of the heat transfer pipe and the return pipe communicate through a connecting pipe and a heat collector; and the return pipe is connected with a geothermal pump. According to the graphene modified energy pile, the heat transfer pipe is designed into the spiral type to be fixed into the pile body, the return pipe is designed, thus the contact area between the heat transfer pipe and the filler can be effectively increased, and the heat transfer capacity of the pile body is improved.

Description

technical field [0001] The invention relates to the technical field of ground source heat pumps and pile foundations, and relates to a graphene-modified energy pile. Background technique [0002] The energy pile is to bury the heat transfer tube in the pile foundation, and form a heat transfer system through the pile foundation and the surrounding earth. As the main body of heat storage and transmission, the pile body needs its better heat storage capacity and heat transmission performance. Traditional energy piles are mainly made of concrete, gravel and steel. Although steel piles have good thermal conductivity, the cost of steel is very high, and there are not many applications in construction projects. The heat storage capacity of concrete and gravel and Average heat transfer performance. In addition, although the concrete material has high compressive strength, its tensile strength is not high. When the pile foundation is subjected to horizontal load or vertical eccen...

AI Technical Summary

Problems solved by technology

The heat transfer tube design of the existing graphene-modified energy pile is relatively traditional, which is only a straight tube shape, resulting in the need to distribute many heat transfer tubes in the pile body during design, but this design still allows the contact between the heat transfer tube and the filler The area is not large enough, resulting in poor heat transfer capability of the pile

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