Compound absorption refrigeration unit

An absorption refrigeration and composite technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problem that the heat exchange area of ​​the evaporator and absorber cannot be fully utilized, the utilization of large temperature differences cannot be realized, and the needs of users cannot be met and other problems, to achieve the effect of reducing equipment investment, saving equipment space, and reducing steam driving pressure

CN110873478APending Publication Date: 2020-03-10YANTAI EBARA AIR CONDITIONER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-03-10

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Abstract

The invention discloses a compound absorption refrigeration unit. The compound absorption refrigeration unit comprises at least two module units, wherein each module unit comprises a low-pressure generator, a high-pressure generator, a hot water generator, an absorber and an evaporator, and each module unit can be configured to have the following working modes: a double-effect working mode that high-quality heat sources carry out heat exchange, a single-effect working mode that waste heat water carries out heat exchange, and a single-double-effect working mode that two heat sources carry out heat exchange simultaneously; and in this way, the different module units in a whole unit can be configured to have different working modes according to the different types and the different heat exchange amounts of the drive heat sources, so that the maximum recovery for waste heat under many conditions that waste heat water is insufficient or the high-grade heat sources are not supplemented or replaced in time can be met, and the maximum refrigeration capacity need is met. Moreover, an outlet concentration of each absorber can be reduced by virtue of the cycle of two or more module units, then a steam drive pressure is reduced, and a smoke discharge temperature of a natural gas outlet or a smoke outlet can be reduced, so that the effects of energy saving and effect improvement are acted.
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Description

technical field

[0001] The invention relates to the technical field of energy recovery, in particular to a composite absorption refrigeration unit. Background technique

[0002] At present, processes such as EO basin liquid cooling in the petrochemical industry, carbon dioxide removal in the petrochemical industry, and primary cooler cooling in coking plants need to provide cooling capacity for cooling all year round. These fields generally have waste water and high-grade heat sources. Therefore, in order to improve the utilization rate of waste heat, double-effect machines and single-effect machines are often installed at this stage to recover heat from high-grade heat sources and waste water.

[0003] The double-effect machine mainly includes an evaporator, an absorber, a condenser, a low-pressure generator and a high-pressure generator. The driving heat source of the double-effect machine is a high-grade heat source. The refrigerant evaporates inside the evaporator, coo...

Examples

Embodiment Construction

[0024] Aiming at the technical problem of the relatively low utilization rate of the heat exchange area of ​​the evaporator and the absorber in the prior art, this paper conducts in-depth research, and proposes a technical solution to solve the above technical problem on the basis of the research, specifically Described as follows.

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Please refer to Figure 1 to Figure 3 , figure 1 It is a structural schematic diagram of a composite absorption refrigeration unit in a specific embodiment of the present invention; figure 2 It is a structural schematic diagram of the modular unit series solution circulation loop in an embodiment of the present invention; image 3 It is a structural schematic diagram of a modular u...