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Nickel-based brazing radial heat pipe heat exchanger

A heat pipe heat exchanger, brazing technology, applied in indirect heat exchangers, heat exchange equipment, tubular elements, etc., can solve the problem of increasing the radial thermal resistance of the heat exchanger, not being able to greatly adjust the wall temperature, and affecting heat transfer Capability and other issues, to achieve the effect of increasing surface temperature, improving system reliability, and easy maintenance

Inactive Publication Date: 2014-05-21
TIANJIN HUANENG ENERGY EQUIP
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AI Technical Summary

Problems solved by technology

However, after the liquid-absorbing core is installed, the weld seam increases more, which increases the difficulty of manufacturing and increases the cost, and the liquid-absorbing core also increases the radial thermal resistance of the heat exchanger, which affects the heat transfer capacity to a certain extent
In addition, the structure of the wick cannot greatly adjust the wall temperature.

Method used

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  • Nickel-based brazing radial heat pipe heat exchanger

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Embodiment Construction

[0012] A nickel-based brazing radial heat pipe heat exchanger is composed of an outer tube 1, an inner tube 2 and a working medium 3. The inner and outer tubes are coaxial, the outer tube is a closed annular shell, the inner tube passes through the outer tube radially, a high vacuum annular gap 4 is formed between the inner tube and the outer tube, and the working medium is sealed in the annular gap . The above-mentioned outer tube adopts nickel-based brazing finned tube.

[0013] The working principle of the present invention is: the heat of the flue gas is transmitted to the working medium in the annular gap by the fins of the nickel-based brazing finned tube, and the working medium flows radially along the annular gap after evaporating, and condenses into The liquid and condensate return to the inner wall of the outer tube by gravity, so that the cycle is repeated, and the efficient transfer of heat is realized through the phase change of the working fluid.

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Abstract

A nickel-based brazing radial heat pipe heat exchanger consists of an inner tube, an outer tube and a working medium, wherein the inner tube and the outer tube are coaxial, the outer tube is a closed annular casing, the inner tube penetrates through the outer tube radially, and an annular high vacuum gap is formed between the inner tube and the outer tube and is provided with the working medium in a closed way. The nickel-based brazing radial heat pipe heat exchanger has a good isothermal property, is stable and reliable in operation, and can effectively control the wall temperature.

Description

Technical field: [0001] The invention belongs to a heat exchange device, in particular to a nickel-based brazing radial heat pipe heat exchanger. Background technique: [0002] At present, the common radial heat exchange tubes are generally made of coaxial inner and outer tubes. A liquid-absorbing core is also set in the room, and the liquid-absorbing core acts as a capillary to enhance the heat exchange effect by lifting and transporting the working medium. However, after the liquid-absorbing core is installed, the weld seam increases more, which increases the difficulty of manufacturing and increases the cost, and the liquid-absorbing core also increases the radial thermal resistance of the heat exchanger, which affects the heat transfer capacity to a certain extent. In addition, the structure of the wick cannot regulate the wall temperature to a large extent. Invention content: [0003] The object of the present invention is to provide a nickel-based brazed radial hea...

Claims

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Application Information

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IPC IPC(8): F28D15/02F28F1/30
Inventor 朱华东时月清李继承韩红伟
Owner TIANJIN HUANENG ENERGY EQUIP
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