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Lithium bromide absorption-compression type series boosting refrigeration/heating pump system

A lithium bromide absorption and heat pump system technology, applied in the field of absorption-compression series boosting refrigeration system, can solve problems such as large compression, and achieve the effects of reducing superheat loss, reducing compression ratio requirements, and low power consumption

Inactive Publication Date: 2011-11-02
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the current absorption-compression system has the advantage of being able to provide low-grade and high-grade heat sources by itself, it still cannot solve the problem of high heat source temperature requirements in thermal energy-driven absorption refrigeration (heat pump) systems (which are used in refrigeration / heat pump industries). Under normal circumstances, the heat source temperature requirement is usually about 100°C / 120°C), and at the same time, the problem of relatively large compression that may exist when using a vapor compression refrigeration system cannot be avoided

Method used

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  • Lithium bromide absorption-compression type series boosting refrigeration/heating pump system
  • Lithium bromide absorption-compression type series boosting refrigeration/heating pump system
  • Lithium bromide absorption-compression type series boosting refrigeration/heating pump system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, figure 1 A lithium bromide absorption-compression series step-up refrigeration system is given. The system consists of a generator 1, a condenser 2, a throttling element 3, an evaporator 4, a compressor 6, an absorber 7, a solution regenerator 9, and a refrigeration unit. Composed of a solvent circulation pump 5 and a solution circulation pump 8, a sprayer I 44 is provided on the top of the evaporator 4, and a sprayer II 74 is provided on the top of the absorber 7. The compressor 6 is placed before the absorber 7 and after the evaporator 4 . The liquid refrigerant outlet of the evaporator 4 is located at the bottom of the evaporator 4 , and the refrigerant vapor outlet of the evaporator 4 is located at the top of the evaporator 4 .

[0036] A heat source coil 11 is arranged inside the generator 1 , and a heat source inlet 12 and a heat source outlet 13 are respectively arranged at both ends of the heat source coil 11 . The condenser 2 is provided with a ...

Embodiment 2

[0054] Embodiment 2, figure 2 A lithium bromide absorption-compression series step-up refrigeration system is provided; the difference with embodiment 1 is:

[0055] The water inlet and outlet of the absorber 7 and the condenser 2 are arranged in series, specifically: the water outlet 73 of the absorber communicates with the water inlet 22 of the condenser. Therefore, the cooling water supply of the external cooling water system is only connected to the absorber water inlet 72 , and the cooling water return water of the external cooling water system is only connected to the condenser water outlet 23 .

[0056] The difference between specific work content and embodiment 1 is as follows:

[0057] The cooling water at normal temperature passes through the absorber water inlet 72, the absorber heat exchange coil 71, the absorber water outlet 73, the condenser water inlet 22 and the condenser heat exchange coil 21, and is finally discharged from the condenser water outlet 23 into...

Embodiment 3

[0059] Embodiment 3, figure 2 A lithium bromide absorption-compression series booster heat pump system is given; its structure is exactly the same as that in Example 2. But when actually used:

[0060] The hot water return water (such as 50° C.) of the external hot water system flows in from the water inlet 73 of the absorber, and the water discharged from the condenser water outlet 23 is used as hot water supply (such as 60° C.) of the external hot water system.

[0061] The heat source inlet 12 is connected with the heat source (for example, 100° C.); the heat source outlet 13 is connected with the external heating system;

[0062] The evaporator water inlet 42 and the evaporator water outlet 43 communicate with the water supply and return water pipelines of the external waste heat system respectively.

[0063] The specific work content is as follows:

[0064] 1. The low-temperature and low-pressure liquid refrigerant (referring to the water evaporated from the lithium b...

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Abstract

The invention discloses a lithium bromide absorption-compression type series boosting refrigeration / heating pump system. A refrigerant steam outlet of a generator (1) is connected with a refrigerant steam inlet of a condenser (2); a liquid refrigerant outlet of the condenser (2) passes through a throttling element (3) and is connected with a liquid refrigerant inlet of an evaporator (4); a liquid refrigerant outlet of the evaporator (4) passes through a refrigerant circulation pump (5) and is connected with a sprayer I (44); a refrigerant steam outlet of the evaporator (4) passes through a compressor (6) and is connected with a refrigerant steam inlet of an absorber (7); a dilute solution outlet of the absorber (7) passes through a solution circulation pump (8) and a solution reheater (9) sequentially and is connected with a dilute solution inlet of the generator (1); and a condensed solution outlet of the generator (1) passes through the solution reheater (9) and is connected with a sprayer II (74). The lithium bromide absorption-compression type series boosting refrigeration / heating pump system has the characteristics of lower requirement on the temperature of a heat source, reduction in the compression ratio of the compressor and the like.

Description

technical field [0001] The invention relates to an absorption-compression series boost refrigeration (heat pump) system, which belongs to the technical field of refrigeration and air conditioning equipment. Background technique [0002] The absorption refrigeration (heat pump) system is a kind of liquid vaporization refrigeration (heat pump) system. Like the vapor compression refrigeration (heat pump) system, it uses the phase change of the refrigerant to achieve the purpose of refrigeration (heat supply). The concentrated solution in the absorber absorbs the evaporated refrigerant vapor and turns into a dilute solution, and then enters the generator, relying on the consumption of heat energy to realize the regeneration of the dilute solution. This process essentially uses heat energy to do work to make the refrigerant vapor from Low pressure is transferred to high pressure, which can replace the compressor in vapor compression refrigeration (heat pump) systems. The generat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B25/02F25B41/00
Inventor 王厉骆菁菁
Owner ZHEJIANG SCI-TECH UNIV
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