Distributed high-efficiency heat exchange tube for middle-deep layer geothermal heating

By setting up a turbulence-inducing unit between the inner and outer tubes to form a spiral guiding structure, the problem of low heat exchange tube efficiency is solved, and a highly efficient and uniform heat transfer effect is achieved.

CN121953518APending Publication Date: 2026-05-01XIAN SHENHENG ENERGY SAVING TECH CO LTD
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Patent Information

Application Number
CN202610291868.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-11
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

The heat exchange efficiency of existing distributed medium-deep geothermal heating heat exchange pipes is poor and cannot meet higher usage requirements.

Method used

Multiple sets of turbulence-inducing units, including guide fins and flow-guiding fins, are set between the inner and outer pipes to form a spiral guiding structure. Through the design of the spiral angle of the guide fins and the turbulence-inducing holes, the fluid is guided to form a three-dimensional spiral vortex, which enhances the contact between the fluid and the pipe wall and the flow stability, and prolongs the heat exchange time.

Benefits of technology

It significantly improves heat exchange efficiency, reduces boundary layer thickness by 30%-40%, increases flow velocity, ensures uniform contact between fluid and pipe wall, improves overall heat transfer coefficient, reduces flow resistance, and achieves efficient and uniform heat transfer.

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Abstract

The invention discloses a distributed efficient heat exchange tube for medium-deep geothermal heating in the technical field of heat exchange tubes, which comprises a heat supply outer tube, a heat supply inner tube and a turbulent flow unit, the heat supply inner tube is inserted into the heat supply outer tube, a heat supply interlayer exists between the heat supply outer tube and the heat supply inner tube, and the turbulent flow unit is arranged in the heat supply interlayer. The multiple groups of turbulent flow units are arranged between the outer pipe and the inner pipe to realize accurate guide control of fluid, the turbulent flow units form a spiral guide structure through turbulent flow guide assemblies which are annularly and uniformly distributed along the axial direction of the inner pipe, and the tube pass fluid is guided in the same direction at a spiral angle to form three-dimensional spiral rotational flow and gradient velocity field distribution; the heat exchange efficiency of the geothermal heating system is remarkably improved through the synergistic effect of strengthening laminar flow bottom layer disturbance, increasing fluid radial mixing strength and prolonging a heat exchange path.
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