Geothermal energy vertical heat conduction system and control method

By using a vacuum pump assembly in the geothermal system to reduce the pressure of the underground heat exchange components and accelerate the vaporization of the medium, the problem of low efficiency in the conversion of the heat exchange medium from liquid to gaseous state is solved, thereby improving the geothermal collection efficiency and the heat output of the load device.

CN120890192APending Publication Date: 2025-11-04ANNAIJI TECHNOLOGY (SHANGHAI) CO LTD
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Patent Information

Application Number
CN202511311267.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-14
Publication Date
2025-11-04

AI Technical Summary

Technical Problem

In existing geothermal systems, the efficiency of liquid-to-gas conversion of the heat exchange medium in underground heat exchange components is low, resulting in low overall geothermal extraction efficiency of the system.

Method used

By reducing the pressure in the medium circulation loop and/or underground heat exchange components through the vacuum pump assembly, the boiling point of the heat exchange medium is lowered, the medium is accelerated to change from liquid to gaseous state, and the gaseous medium is floated to the surface through the steam guide channel, thereby improving the efficiency of geothermal collection.

Benefits of technology

It improves geothermal extraction efficiency, increases the effective heat output of above-ground load devices, and reduces energy consumption and costs.

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Abstract

The invention discloses a geothermal energy vertical heat conduction system and a control method, and relates to the technical field of geothermal application, and the geothermal energy vertical heat conduction system comprises a medium circulation loop which comprises a steam guide channel, an underground heat exchange assembly, a liquid injection channel and an overground heat exchange assembly which are sequentially connected in series and closed, and the medium circulation loop is filled with a heat exchange medium; the underground heat exchange assembly is used for exchanging heat with underground heat energy, and the overground heat exchange assembly is used for exchanging heat with an overground load module; the vacuum pump assembly communicates with the medium circulation loop and is used for forming negative pressure in the underground heat exchange assembly; according to the geothermal energy vertical heat conduction system and the control method, the pressure in the medium circulation loop and / or the underground heat exchange assembly is reduced through the vacuum pump assembly, then the boiling point of the heat exchange medium is reduced, the heat exchange medium is accelerated to be converted into the gas state from the liquid state, heat is carried to float to the ground surface through the steam guide channel, and the geothermal energy collection efficiency is improved.
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