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Supercritical fluid fluidized intensified heat diffusion method and its heat diffusion working medium and applications

A supercritical fluid, heat transfer enhancement technology, applied in fluidized bed heat exchangers, heat exchanger types, indirect heat exchangers, etc., to achieve the effect of improving heat transfer efficiency, improving heat transfer capacity, and improving performance

Inactive Publication Date: 2008-10-15
李建民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on the heat transfer performance of supercritical fluid is limited to studying it as a fluid, such as using a special external pump to provide power for fluid heat transfer as a fluid;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Application fields: building heating, engine cooling, liquid cooling of electronic devices, temperature control of machinery and medical equipment, aerospace, military.

Embodiment 11

[0048] The composition of each component:

[0049] Supercritical working medium: carbon dioxide, 5000 grams;, critical temperature 31.3 ℃, critical pressure 7.29MPa, working temperature range: 30-120 ℃, working pressure range: 8-15MPa.

[0050] The particles added are: 5 grams of copper with a particle size of 0.001 mm, 50 grams of copper oxide with a particle size of 0.01 mm, and 100 grams of aluminum with a particle size of 0.3 mm.

[0051] The fluidization enhanced heat transfer method is to add 10 grams of copper with a particle size of 0.001 mm, 30 grams of copper oxide with a particle size of 0.01 mm, and 100 grams of aluminum with a particle size of 0.3 mm in the supercritical fluid carbon dioxide. The carbon dioxide carries the particulate matter to transfer heat together, and the particulate matter strengthens the heat transfer and flow state of the supercritical fluid.

Embodiment 12

[0053] Supercritical working medium: carbon dioxide, 500 grams;, critical temperature 31.3 ℃, critical pressure 7.29MPa, working temperature range: 30-120 ℃, working pressure range: 8-15MPa.

[0054] The added particles are: 100 grams of plastic particles with a particle size of 1 mm, and 40 grams of sand particles with a particle size of 2--5 mm.

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PUM

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Abstract

The invention discloses a fluidization enhanced heat transfer method and a fluidization multiphase heat transfer medium. The heat transfer process is enhanced by adding particles inside a supercritical flow body. The technique can be widely applied to an air conditioner, a heat pump, a heat pipe, the heating, the cooling of an internal-combustion engine, an electronic device and the cooling of a power device, raises the energy utilization rate of the whole system, improves the heat control of the system and increases the thermal management ability.

Description

technical field [0001] The invention relates to utilizing the heat transfer and enhanced heat transfer of supercritical fluids, adopting a fluidization method to enhance heat transfer for supercritical fluids, and a fluidized and enhanced heat transfer working medium for supercritical fluids. The flow state of the critical heat transfer medium achieves the effect of enhancing heat transfer. Background technique [0002] As a heat transfer working medium, fluid is widely used in the heat transfer process. The flow of the heat transfer medium makes it absorb heat from one place and then release heat from another place to achieve the purpose of fluidized heat transfer. [0003] In the heat transfer process of the heat transfer working medium, one main method is to use the phase change of the heat transfer working medium to transfer heat. For example, freon or water, ammonia, alkanes, etc. are used as heat transfer working media in refrigeration air conditioners and heating hea...

Claims

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Application Information

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IPC IPC(8): F28D13/00
Inventor 李建民
Owner 李建民
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