Efficient heat exchanger for medium-deep geothermal energy

A deep-seated, heat exchanger technology, applied in geothermal energy, geothermal energy power generation, geothermal collectors, etc., can solve the problems of high utilization cost of heat exchangers, low continuous heat extraction capacity, poor system stability, etc. The effect of enhancing the heat extraction capacity, prolonging the heat exchange time and improving the heat exchange capacity

Pending Publication Date: 2022-07-05
GANSU BUILDING MATERIALS DESIGN & RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-efficiency heat exchanger for mid-deep geothermal energy to solve the problems of high development and utilization costs of the heat exchanger, large heat loss in the heat exchange link, poor system stability, and low continuous heat extraction capacity

Method used

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  • Efficient heat exchanger for medium-deep geothermal energy
  • Efficient heat exchanger for medium-deep geothermal energy
  • Efficient heat exchanger for medium-deep geothermal energy

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Embodiment

[0027] like Figure 1-3 As shown in the figure, a high-efficiency heat exchanger for middle and deep geothermal energy is set below the ground as a whole, with an inspection hole 7 at the top, and the inspection hole 7 is 2500cm~3000cm away from the ground, which is conducive to the installation of the heat exchanger and the connection of pipes, and does not affect the use of the ground. Function.

[0028] The high-efficiency heat exchanger includes an outer tube, a central tube 2, and a flow control liquid separator 3. The central tube 2 is coaxially arranged in the outer tube, and the flow control liquid separator 3 is arranged above the central tube 2. The flow control liquid separator 3 is the same as the The central pipe 2 and the heat preservation pipe 4 are connected; the outer pipe is divided into upper, middle and lower sections, which are the heat preservation pipe 4, the conversion pipe 5 and the heat exchange pipe 1 in order from top to bottom.

[0029] Specifical...

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Abstract

The invention discloses an efficient heat exchanger for medium-deep geothermal energy, belongs to the technical field of terrestrial heat, and aims to solve the problems of high development and utilization cost, large heat loss in a heat exchange link, poor system stability and low continuous heat extraction capacity of a heat exchanger. The heat exchanger comprises an outer pipe, a central pipe and a flow control liquid separator, and the flow control liquid separator is arranged on the central pipe; the central pipe is coaxially arranged in the outer pipe, the outer pipe is divided into an upper section, a middle section and a lower section and sequentially comprises a heat preservation pipe, a conversion pipe and a heat exchange pipe from top to bottom, and the conversion pipe is in a circular truncated cone shape. On the basis of an original straight-up and straight-down inner and outer pipe structure, the outer pipe structure is divided into three sections, the operation flow state of a heat exchange medium is changed, and the heat taking capacity of a single well is improved; the upper heat preservation pipe is externally insulated and internally insulated, downward fluid passes through at a high flow speed, heat exchange between a heat exchange medium and a rock-soil body outside the pipe is prevented, and heat loss is reduced. And in the conversion pipe section and the heat exchange pipe section, the maximum heat exchange with geothermal energy in the stratum temperature increasing section is realized by changing the flow state characteristic of a heat exchange medium and increasing the heat exchange area.

Description

technical field [0001] The invention belongs to the technical field of geothermal energy, and in particular relates to a high-efficiency heat exchanger for mid-deep geothermal energy. Background technique [0002] As a kind of clean energy, geothermal energy is a renewable clean energy that originates from the decay of molten magma and radioactive substances inside the earth and exists in the rock in the form of heat. It is more and more favored by people because of its clean and environmental protection, large reserves and renewable advantages. At present, the middle and deep geothermal energy heating technology used in clean heating is relatively mature, but there are still problems such as high development and utilization costs, large heat loss in heat exchange, poor system stability, and low continuous heat extraction capacity, all of which limit the middle and deep layers. Development and utilization of geothermal energy. [0003] The reason is concentrated on the hea...

Claims

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Application Information

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IPC IPC(8): F24T10/17
CPCF24T10/17Y02E10/10
Inventor 邵继新王晓龙魏国平龚荣虎胡广涛张建堂马立全刘芮汐金瑜张羽白胡永权
Owner GANSU BUILDING MATERIALS DESIGN & RES INST CO LTD
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