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Lithium bromide absorption liquid with carbon nano tube disperse system and preparation method thereof

A lithium bromide absorption and carbon nanotube technology, applied in the field of lithium bromide absorption liquid and its preparation, can solve the problems of low heat exchange efficiency and easy blockage

Inactive Publication Date: 2014-01-15
昆山市周市溴化锂溶液厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a lithium bromide absorption liquid with a carbon nanotube dispersion system, which well solves the technical problems in the prior art that the lithium bromide aqueous solution is easy to be blocked after a period of use, and the heat exchange efficiency is low.

Method used

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  • Lithium bromide absorption liquid with carbon nano tube disperse system and preparation method thereof
  • Lithium bromide absorption liquid with carbon nano tube disperse system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation of embodiment 1 lithium bromide absorbing liquid

[0035] (1) Preparation of lithium bromide aqueous solution

[0036] Prepare lithium bromide absorbing solutions with concentrations of 1wt%, 10wt%, 20wt%, 30wt%, 40wt%, and 50wt%. The proportioning of lithium bromide and water is carried out according to Table 1.

[0037] The component distribution ratio of table 1 lithium bromide aqueous solution

[0038]

[0039] (2) Obtaining carbon nanotubes

[0040] Carbon nanotubes can be purchased or prepared by yourself.

[0041] (3) Add carbon nanotube particles to the above-mentioned lithium bromide aqueous solution with various mass concentrations, so that the proportion of carbon nanotube particles contained in the lithium bromide absorption solution is 0.001wt%, 0.005wt%, 0.01wt%, and 36 batches are prepared. Perform ultrasonic dispersion treatment; then add octanol and amino alcohol complex titanate for further mixing and continue ultrasonic dispersion...

Embodiment 2

[0044] Long-term change of embodiment 2 lithium bromide absorbing liquid dispersion stability

[0045] (1) Preparation of lithium bromide aqueous solution

[0046] The concentration of the prepared lithium bromide aqueous solution is 1wt%, 10wt%, 20wt%, 30wt%, 40wt%, 50wt%. The proportioning of lithium bromide and water is carried out according to Table 1.

[0047] The component distribution ratio of table 1 lithium bromide aqueous solution

[0048]

[0049] (2) Obtaining carbon nanotubes

[0050] Carbon nanotubes can be purchased or prepared by yourself.

[0051] (3) Add carbon nanotube particles to the above-mentioned lithium bromide aqueous solutions with various mass concentrations, so that the proportion of carbon nanotube particles contained in the lithium bromide absorption solution is 0.001wt%, 0.004wt%, 0.01wt%, and 36 batches are prepared. Perform ultrasonic dispersion treatment; then add octanol and amino alcohol complex titanate for further mixing and contin...

Embodiment 3

[0054] Embodiment 3 Lithium Bromide Absorption Liquid Thermal Conductivity Variation

[0055] The following samples similar to those of Example 1 were prepared. That is, respectively disperse 0.01wt% of carbon nanotube microparticles, the solution concentration of lithium bromide aqueous solution is 50%, add 0.1wt% of amino alcohol complex titanate as a dispersion stabilizer to it, and prepare 6 ultrasonically dispersed sample.

[0056] The heat conduction and material conduction characteristics of the above-prepared samples were evaluated. The increase of the absorption rate when using lithium bromide absorption solution at different concentrations is studied relative to the absorption rate of general lithium bromide aqueous solution. When the absorptivity exceeds 1, an increase in the conductivity of the substance can be observed. The higher the concentration of nanoparticles, the greater the enhancement of the material conduction properties.

[0057] Compared with the g...

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Abstract

The invention discloses a lithium bromide absorption liquid with a carbon nano tube disperse system. The lithium bromide absorption liquid with the carbon nano tube disperse system is lithium bromide aqueous solution with the mass concentration of 1 to 50 percent; the lithium bromide aqueous solution comprises carbon nano tube particles accounting for 0.001 to 0.01 percent of the total weight of the lithium bromide aqueous solution, a surfactant accounting for 0.01 to 0.1 percent of the total weight of the lithium bromide aqueous solution, and a dispersion stabilizer accounting for 0.01 to 0.1 percent of the total weight of the lithium bromide aqueous solution. The lithium bromide absorption liquid has excellent dispersion stability and substance conductivity.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and particularly relates to a lithium bromide absorption liquid with a carbon nanotube dispersion system and a preparation method thereof. Background technique [0002] Lithium bromide absorption refrigerator uses lithium bromide solution as absorbent, water as refrigerant, and uses water to evaporate and absorb heat under high vacuum to achieve the purpose of refrigeration. In order to make the refrigeration process continue continuously, the evaporated refrigerant water vapor is absorbed by the lithium bromide solution, and the solution becomes thinner. This process occurs in the absorber, and then the solution is heated by heat energy to make it The water is separated and the solution becomes thicker, and this process is carried out in the generator. The steam obtained in the generator is condensed into water in the condenser, and then sent to the evaporator for evaporation after thrott...

Claims

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Application Information

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IPC IPC(8): C09K5/04
Inventor 吴冬琪
Owner 昆山市周市溴化锂溶液厂
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