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Nano lithium bromide solution and preparation method thereof

A lithium bromide, nano-copper oxide technology, applied in chemical instruments and methods, heat exchange materials, etc., can solve problems such as corrosion

Inactive Publication Date: 2014-02-26
BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing nano-lithium bromide technology, it is traditionally believed that lithium bromide is corrosive to metal copper (Cu) ions, and most of them use other nanoparticles as additives.

Method used

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  • Nano lithium bromide solution and preparation method thereof
  • Nano lithium bromide solution and preparation method thereof

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing.

[0023] Such as figure 1 Shown is the preparation flow chart of nano lithium bromide solution of the present invention.

[0024] A certain amount of 58% pure lithium bromide solution, nano-copper oxide, ammonium citrate, and gum arabic were respectively weighed with an electronic analytical balance at a mass ratio of 993:1:1:5.

[0025] The 58% pure lithium bromide solution is prepared according to the following method: the lithium bromide solution uses analytically pure lithium bromide with a purity of 99.9%, weighs lithium bromide and distilled water with a beaker and an electronic analytical balance according to the mass ratio of 58:42, and then puts the lithium bromide powder into the distilled water , and stir while adding.

[0026] Then, first add ammonium citrate and stir while adding; then add gum arabic and stir while adding; finally add nano-copper oxide and stir...

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Abstract

The invention provides a preparation method of a nano lithium bromide solution and the nano lithium bromide solution which is obtained by adopting the preparation method. The preparation method provided by the invention comprises the following steps: sequentially adding ammonium citrate, gum arabic and nano copper oxide into a 58% lithium bromide solution, and performing mechanical ultrasonic stirring and four times of heating to prepare the nano lithium bromide solution which has stable properties, enhanced absorption rate and reduced surface tension and boiling temperature, and takes the nano copper oxide as an additive.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a nano-lithium bromide solution used as an absorbent of an absorption refrigerator and a preparation method thereof. Background technique [0002] Compared with traditional compression refrigeration technology, absorption refrigeration technology has many excellent characteristics, such as no pollution to the environment and atmosphere, low requirements on heat source, waste heat utilization, simple equipment structure, safety and reliability, and stable operation , low noise and other characteristics, therefore, it has been more and more widely used and developed in the field of industrial applications and refrigeration and air conditioning. [0003] Adding nanoparticles to the absorbent lithium bromide aqueous solution can improve the thermophysical properties of the absorbent, facilitate heat and mass transfer, and improve the characteristics of the absorbent is a new te...

Claims

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Application Information

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IPC IPC(8): C09K5/04
Inventor 解国珍王亮亮王瑞祥王莉张新兴吴刚王刚安龙
Owner BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE