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Method of adding additive into absorbing lithium bromide refrigerator

An absorption refrigerator and additive technology, which is applied to refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of difficult recycling of additives, difficulty in adding additives into the absorber, and difficult control of the adding process, and the method is simple, The effect of easy addition process, large economic and social benefits

Inactive Publication Date: 2004-04-07
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the difficulty of using this method is: if the temperature of the additive in the container is low, the vapor pressure of the additive is lower than the pressure of the absorber, and it is very difficult for the additive to enter the absorber; The content of additives is also high. At this time, the additive vapor acts in the absorber as a non-condensable gas, which will inhibit the absorption process and partially offset the strengthening effect of the additive vapor on the absorption process.
Therefore, the addition process is not easy to control
In addition, an additive container needs to be added, and it is not easy to realize the recycling of additives in engineering practice

Method used

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  • Method of adding additive into absorbing lithium bromide refrigerator
  • Method of adding additive into absorbing lithium bromide refrigerator
  • Method of adding additive into absorbing lithium bromide refrigerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1. Add additive 2-ethyl hexanol to the single-effect absorption refrigerator to strengthen lithium bromide solution to absorb water vapor.

[0017] Adopt single-effect lithium bromide absorption refrigerator, 3000 grams of water as refrigerant are housed in evaporator 1, and lithium bromide solution (being the lithium bromide aqueous solution of concentration 53.9%) as absorbent is housed in absorber 2. Take 0.6g, 1.5g, 4.5g of additive 2-ethylhexanol directly into the water of the evaporator through the refrigerant inlet, so that the concentration of the additive in the water is 200ppm, 500ppm, 1500ppm respectively; the whole system is in a vacuum state . During operation, the evaporator 1 communicates with the condenser 4 through the pipeline and the throttle valve F2, and the water evaporated in the evaporator 1 is replenished by the water in the condenser 4. The absorber 2 communicates with the generator 3 through the pipeline, the throttle valve F3, and...

Embodiment 2

[0018] Embodiment 2. Add additive 1-octanol to the single-effect absorption refrigerator to strengthen lithium bromide solution to absorb water vapor.

[0019]Adopt single-effect lithium bromide absorption refrigerator, 2500 grams of water as refrigerant are housed in evaporator 1, and lithium bromide solution (being the lithium bromide aqueous solution of concentration 53.9%) as absorbent is housed in absorber 2. Take 0.5 g, 1.25 g, 3.75 g, 7.5 g, and 25 g of additive 1-octanol directly into the water of the evaporator through the refrigerant inlet, so that the concentration of the additive in the water is 200 ppm, 500 ppm, 1500 ppm, 3000ppm, 10000ppm; the whole system is in a vacuum state. During operation, the evaporator 1 communicates with the condenser 4 through the pipeline and the throttle valve F2, and the water evaporated in the evaporator 1 is replenished by the water in the condenser 4. The absorber 2 communicates with the generator 3 through the pipeline, the thro...

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Abstract

The present invention relates to the method of reinforcing absorption in absorbing lithium bromide refrigerator, and features that liquid additive with the effect of reinforcing absorption is added into water as the refrigerant in the evaporator, so that water and the additive evaporate simultaneously in the evaporator and the additive vapor together with water vapor reaches the absorber to promote the process for lithium bromide solution to absorb water vapor. Experiment shows that the said metod can reach reinforcing effect superior to traditional methos. The present invention has controllable adding course, circularly used additive, no additional investment and no increase in operating cost.

Description

Technical field: [0001] This invention relates to a method of enhancing absorption in lithium bromide absorption refrigerators. Background technique: [0002] At present, my country's lithium bromide absorption refrigerator industry is developing rapidly, but compared with compression refrigerators, absorption refrigerators still have the disadvantages of larger volume and higher manufacturing costs. The key component of the absorption refrigerator is the absorber. If the heat and mass transfer effect can be enhanced, the volume and manufacturing cost of the absorption refrigerator can be reduced, which is the key to further improving the market competitiveness of the absorption refrigerator. [0003] The fundamental method to reduce the volume of the absorber is to enhance the heat and mass transfer effect during the absorption of water vapor by the lithium bromide solution. At present, the commonly used methods are: (1) to enhance the heat and mass transfer effect during t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B45/00
Inventor 程文龙陈则韶
Owner UNIV OF SCI & TECH OF CHINA
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