Ground heat exchanger system

By designing a system of water collectors, underground pipes, and rainwater storage stations, utilizing the heat exchange between rainwater and soil, and optimizing the U-shaped underground pipe structure and backfill materials, the problem of low efficiency of underground pipe heat exchangers was solved, achieving efficient cooling and heating functions and sustainable operation.

CN120799729APending Publication Date: 2025-10-17CHINA UNIV OF GEOSCIENCES (WUHAN) +1
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Patent Information

Application Number
CN202510844034.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-23
Publication Date
2025-10-17

AI Technical Summary

Technical Problem

Existing buried pipe heat exchangers have low heat exchange efficiency and large footprint in the field of building heating, and it is difficult to balance heat exchange and insulation effects. The application of rainwater collected by rainwater pipes in geothermal energy utilization has not been fully developed.

Method used

A buried pipe heat exchanger system was designed, including a water collector, a buried pipe, and a rainwater storage station. It utilizes rainwater to exchange heat with the underground soil. The structure is optimized by using a U-shaped buried pipe, segmented backfill material, and insulation layer to improve heat exchange efficiency and provide cooling and heating functions in summer and winter.

Benefits of technology

It improves the heat exchange efficiency of the heat exchanger, reduces heat loss, lowers production costs, realizes the recycling of rainwater and the sustainable operation of the system, and meets the cooling and heating needs of the building.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention provides a buried pipe heat exchanger system, and relates to the technical field of energy application, the system comprises a water collector, a buried pipe and a rainwater storage station, the water collector is arranged below a building group; the buried pipes are mounted under open spaces on the two sides of the building group; the buried pipe is communicated with the water collector through a pipeline; the rainwater storage station is communicated with the buried pipe through a pipeline; the rainwater storage station is also vertically communicated with a plurality of rainwater pipelines; rainwater of a building group is collected into the rainwater storage station through the rainwater pipeline, the rainwater storage station temporarily stores the collected rainwater and flows into the buried pipe, the rainwater in the buried pipe exchanges heat with underground soil and then flows back to the water collector, and water in the water collector is conveyed into the buried pipe and exchanges heat with air in a building. According to the buried pipe heat exchanger system, heat transfer between the water supply pipe and the water return pipe of the buried pipe can be effectively reduced while rainwater is utilized, the heat production efficiency is improved, and the production cost is reduced.
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