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Lithium bromide absorption liquid with nanogold dispersion system and preparation method thereof

A technology of lithium bromide absorption and dispersion system, applied in the field of refrigeration, can solve problems such as easy blockage and low heat exchange efficiency

Inactive Publication Date: 2014-02-05
昆山市周市溴化锂溶液厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a lithium bromide absorption liquid with a nano-gold dispersion system, which well solves the technical problems in the prior art that the lithium bromide aqueous solution is easy to be blocked after being used for a period of time, and the heat exchange efficiency is low.

Method used

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  • Lithium bromide absorption liquid with nanogold dispersion system and preparation method thereof
  • Lithium bromide absorption liquid with nanogold dispersion system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation of embodiment 1 lithium bromide absorption liquid

[0036] (1) Preparation of lithium bromide aqueous solution

[0037] 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.

[0038] The component distribution ratio of table 1 lithium bromide aqueous solution

[0039]

[0040] (2) Obtaining gold nanoparticles

[0041] Gold nanoparticles can be purchased or prepared by yourself.

[0042] (3) Add nano-gold particles to the above-mentioned lithium bromide aqueous solution with various mass concentrations, so that the proportion of nano-gold 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 treatm...

Embodiment 2

[0045] Long-term change of embodiment 2 lithium bromide absorbing liquid dispersion stability

[0046] (1) Preparation of lithium bromide aqueous solution

[0047] 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.

[0048] The component distribution ratio of table 1 lithium bromide aqueous solution

[0049]

[0050] (2) Obtaining gold nanoparticles

[0051] Gold nanoparticles can be purchased or prepared by yourself.

[0052] (3) Add nano-gold particles to the above-mentioned lithium bromide aqueous solution with various mass concentrations, so that the ratio of nano-gold 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 continue ultrasonic ...

Embodiment 3

[0055] Embodiment 3 Lithium Bromide Absorption Liquid Thermal Conductivity Variation

[0056] The following samples similar to those of Example 1 were prepared. That is, respectively disperse 0.01wt% of nano-gold particles, the concentration of the lithium bromide aqueous solution is 50%, add 0.1wt% of amino alcohol complex titanate as a dispersion stabilizer, and prepare 6 samples dispersed by ultrasonic waves .

[0057] 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.

[0058] Compared with the general lithium ...

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Abstract

The invention discloses a lithium bromide absorption liquid with a nanogold dispersion system. The lithium bromide absorption liquid with a nanogold dispersion system is a lithium bromide aqueous solution with a mass concentration of 1-50%, and the lithium bromide aqueous solution contains nanogold particles accounting for 0.001-0.01% of the total weight of the lithium bromide aqueous solution, a surfactant accounting for 0.01-0.1% of the total weight of the lithium bromide aqueous solution and a dispersion stabilizer accounting for 0.01-0.1% of the total weight of the lithium bromide aqueous solution. The medium shows excellent dispersion stability and material conductivity.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, in particular to a lithium bromide absorber with nano-gold dispersion system [0002] Liquid collection and its preparation method. Background technique [0003] The lithium bromide absorption refrigerator uses lithium bromide solution as the absorbent and water as the 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 go on 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 to make it The water separates and the solution becomes thicker, this process takes place 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 throttling. This cycle a...

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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