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Absorption mode refrigerator of hot water type lithium bromide between single action and two stages

An absorption refrigerator, lithium bromide technology, applied in refrigerators, adsorption machines, refrigeration and liquefaction, etc., can solve the problems of multiple collector areas, low efficiency, poor economy, etc., and achieve the effect of a reasonable overall layout

Inactive Publication Date: 2007-02-21
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will greatly limit the operating time of the unit using solar energy; and the two-stage cycle requires more collector area due to low efficiency, which will increase equipment costs and is not economical

Method used

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  • Absorption mode refrigerator of hot water type lithium bromide between single action and two stages
  • Absorption mode refrigerator of hot water type lithium bromide between single action and two stages
  • Absorption mode refrigerator of hot water type lithium bromide between single action and two stages

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 see figure 1 , a hot water lithium bromide absorption refrigerator, comprising a first high-pressure generator 1, a second high-pressure generator 2, a condenser 3, a medium-pressure generator 4, a medium-pressure absorber 5, a low-pressure absorber 6, and an evaporator 7. The high-temperature solution heat exchanger 8, the low-temperature solution heat exchanger 9, the solution pump 10, the refrigerant pump 11, the solution pump 12 and connecting pipelines, the refrigerant water outlet of the condenser 3 uses a U-shaped tube and the evaporator 7 The refrigerant water inlet is connected, the refrigerant water outlet at the bottom of the evaporator 7 is connected to the inlet of the refrigerant pump 11, and the outlet of the refrigerant pump 11 is connected to the inlet of the refrigerant water spray pipe above the heat transfer core of the evaporator 7; The concentrated solution outlet at the bottom of the medium pressure generator 4 is connected to the concen...

Embodiment 2

[0019] Example 2 see figure 2 , first of all, the above-mentioned three heat exchangers on the uppermost layer can be arranged in another way, that is, the second high-pressure generator 2 and the condenser 3 are arranged side by side, leaving a steam channel between them, and the first high-pressure generator 1 is arranged in the Below them; Secondly, the outlet of the solution pump 12 below the medium-pressure absorber 5 is provided with a recirculation spray circuit to increase the solution spray volume of the medium-pressure absorber 5: the solution pump 10 below the low-pressure absorber 6 The outlet of the evaporator 13 bypass pipeline is set to increase the solution spraying amount of the low-pressure absorber 6 and improve the heat and mass transfer efficiency of the absorption process; in addition, both the evaporator 7 and the low-pressure absorber 6 can be configured with 2 groups or Two or more sets of heat exchangers arranged in parallel.

Embodiment 3

[0020] Example 3 see image 3 , the above-mentioned second high-pressure generator 2 can also adopt another arrangement, that is, the second high-pressure generator 2 is arranged at a low position, and the dilute solution inlet at the lower part of the second high-pressure generator 2 is connected with the dilute solution outlet of the high-temperature solution heat exchanger 8 connection; the dilute solution inlet of the high-temperature solution heat exchanger 8 is connected with the dilute solution outlet at the bottom of the medium-pressure absorber 5; the vapor-liquid two-phase fluid outlet of the second high-pressure generator 2 is connected to the first high-pressure generator 1 through a liquid lift pipe The gas-liquid two-phase fluid inlet is connected; therefore, a sufficient liquid column is established in the connecting pipe from the medium-pressure absorber to the second high-pressure generator through the high-temperature solution heat exchanger to balance the pre...

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Abstract

A lithium bromide absorption refrigerator of hot water type between single effect and double-stage is prepared as arranging the first and the second high pressure generator as well as condenser unitedly in the same shell being set at top of machine set; arranging medium pressure generator and absorber unitedly in the same shell being set at second layer of machine set; arranging high temperature solution heat exchanger in three streams type at the third layer; arranging low pressure absorber and evaporator unitedly in the same shell being set at fourth layer of machine set and arranging low temperature solution heat exchanger, solution pump and refrigerant pump at bottom layer of machine set.

Description

technical field [0001] The invention relates to a lithium bromide absorption refrigerating machine, in particular to a hot water type lithium bromide absorption refrigerating machine used for solar air conditioning between a single-effect cycle and a two-stage cycle. Background technique [0002] Lithium bromide absorption refrigerators for solar air conditioners usually use a single-effect (also called single-stage) cycle or two-stage cycle process. The single-effect cycle requires the hot water inlet temperature to be above 85-95°C, and the temperature drop of the hot water is usually only 5-10°C. This will greatly limit the running time of the unit using solar energy; and the two-stage cycle requires more collector area due to low efficiency, which will increase equipment costs and is not economical. Contents of the invention [0003] The invention provides a hot water type lithium bromide absorption refrigeration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B15/06
CPCY02B30/62Y02A30/27
Inventor 陈亚平
Owner SOUTHEAST UNIV
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