Absorption refrigeration method and device for fully electric power recycling exhaust heat

Abstract

The invention relates to an absorption refrigeration method and a device for all-electric reuse of discharged heat. First to third-grade evaporation units are mainly acted on concentration of dilute solution; the later stages use secondary steam latent heat of the previous stages for flash evaporation to generate steam for the later stages; steam generated by the fourth stage is heated by a mechanical internal heating booster pump to return to a heat source input end of the first stage; insufficient heat source generates hot water through an absorption heat pump system for recovering the discharged heat; and the hot water is merged into a steam regeneration system by a steam generation system. All high-temperature condensation heat and part low-temperature condensation heat of refrigerant steam are reused in the operation process; meanwhile, the increment of heat and temperature of the regenerated steam only consumes less electric energy, and the regenerated steam is used by multiple grades, so that the energy consumption is largely reduced; the energy-efficiency ratio reaches COP=18 (3489 kw refrigerating capacity per hour, and 190 kw consumed electric quantity); the high-temperature condensation heat reaches zero emission; and the use level of cooling water is reduced by 60%.

Description

[technical field] [0001] The invention relates to a fully electric-driven multi-stage dilute solution concentration method. During the refrigeration process, the heat discharged from the condensation of high-temperature refrigerant water vapor is fully absorbed and used in the refrigeration system, and at the same time, the heat discharged from low-temperature agent water vapor is partially reused for driving. The new heat energy generated by the heat pump supplements part of the heat energy required by the refrigeration system, thereby obtaining an absorption refrigeration device with an ultra-high energy efficiency ratio. [Background technique] [0002] The traditional absorption refrigeration method has a production history of nearly a hundred years, and adopts basically stereotyped thermodynamic processes and equipment; in actual use, the lithium bromide absorption refrigeration cycle used for air conditioning and the ammonia used for refrigeration and air conditioning ar...

AI Technical Summary

Problems solved by technology

[0006] Absorption refrigeration uses the heat source as the driving energy. When starting and running the refrigeration system, what is consumed is heat energy and what is output is cold energy. Obviously, this type of device cannot be used in areas without heat sources, and the scope of application is limited. At present, there is no one A method and device for fully electric input to satisfy the lithium bromide refrigeration system driven and working normally, and at the same time satisfy high energy efficiency ratio

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