Miniature capillary pump loop flat plate heat pipe with alcohol group nano fluid as working medium

A nano-fluid, plate heat pipe technology, applied in the field of thermal engineering, can solve the problem that the tubular evaporator is not suitable for cooling the heat load of the plate, and achieve the effects of improving the heat dissipation power, reducing the total thermal resistance and improving the heat exchange characteristics.

Inactive Publication Date: 2008-12-03
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most evaporators used for CPL adopt tube evaporators, and tube evaporators are not suitable for cooling flat heat loads

Method used

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  • Miniature capillary pump loop flat plate heat pipe with alcohol group nano fluid as working medium
  • Miniature capillary pump loop flat plate heat pipe with alcohol group nano fluid as working medium

Examples

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Embodiment Construction

[0017] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0018] Such as figure 1 As shown, this embodiment is composed of an evaporator 1, a steam channel 2, a condenser 4, and a liquid channel 6. One end of the evaporator 1, the steam channel 2 is connected to one end of the condenser 4, and the other end of the condenser 1 is connected through the liquid channel 6. The other end of the evaporator 4. The working fluid absorbs heat in the evaporator 1 and turns into steam, the steam enters the condenser 4 through the steam channel 2 to condense, and the condensed working medium flows into the evaporator 1 through the liqui...

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Abstract

The invention provides a capillary pump return passage flat heat pipe which adopts an alcohol nano-particle suspension as the working fluid, and relates to the cooling technology field of electronic components. The flat heat pipe comprises an evaporator, a gas passage, a condenser and a fluid passage. A double-layer capillary structure composed of stainless steel screens of two specifications is used in the evaporator; the double-layer capillary screen structure composed of the stainless steel screens of two specifications is used in the evaporator; an alcohol-group nano-particle suspension is adopted as the working fluid, wherein the alcohol-group nano-particle suspension is a mixture of the alcohol liquid and the nano-particles, the mass concentration of copper nano-particle in the suspension is 1%-2%, and the filling factor is 50%-60% of the total volume of the system. By adopting the alcohol nano-particle suspension as the working fluid, the heat transfer characteristic of the capillary pump return passage flat heat pipe is strengthened, thereby effectively reducing the entire thermal resistance and increasing the maximum heat dissipation power.

Description

technical field [0001] The invention relates to a heat pipe in the technical field of thermal engineering, in particular to a small capillary pump loop flat heat pipe using alcohol-based nanofluid as a working medium. Background technique [0002] CPL (capillary pump two-phase fluid circuit) is a device that uses phase change of working fluid to transfer heat. It has high heat transfer capacity, strong temperature control ability, and can realize long-distance energy transfer without additional power. Ideal system for cooling space stations, modern communication satellites, spacecraft and electronic equipment. In addition to the high thermal conductivity, excellent isothermal property, and heat flux variability of ordinary heat pipes, the capillary pump loop (CPL) heat pipe is more importantly that it can be effectively applied to small temperature differences, long distances, and no additional power. the energy transfer process. At present, the CPL using pure liquids, mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/02
Inventor 吕伦春刘振华
Owner SHANGHAI JIAO TONG UNIV
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