Hot water type lithium bromide absorption-type cooling water unit with single-effect generating solution parallel connection

Abstract

The invention relates to a hot water type lithium bromide absorption-type cooling water unit with single-effect generating solution parallel connection and belongs to the technical field of refrigeration equipment. The hot water type lithium bromide absorption-type cooling water unit comprises a single-effect generator, a second-stage generator, a condenser, an evaporator, a second-stage absorber,a first-stage absorber, a first-stage generator, a first-stage heat exchanger, a second-stage heat exchanger, a single-effect heat exchanger, a refrigerant pump, a second-stage generating pump, a second-stage absorption pump and a first-stage single-effect generating pump. The hot water type lithium bromide absorption-type cooling water unit is characterized in that hot water is in series connection and enters the single-effect generator firstly, then enters the first-stage generator, and finally enters the second-stage generator; the interior of the unit is divided into three relatively independent solution circulation, namely the second-stage solution circulation, the first-stage solution circulation and the single-effect solution circulation, and the first-stage solution circulation and the single-effect solution circulation are in parallel connection; and four shielding pumps are used. According to the hot water type lithium bromide absorption-type cooling water unit, the coolingamplitude of medium (low) temperature waste heat water is large, the performance coefficient COP value is increased while heat of the waste heat water is more recycled, and the comprehensive economicand social benefits of energy saving and emission reduction are achieved.

Description

technical field [0001] The invention relates to a hot-water lithium bromide absorption chiller with a single-effect generating solution in parallel, which belongs to the technical field of air-conditioning equipment. Background technique [0002] In the production process or life, it is necessary to use air conditioners to cool or heat, and these need to consume a certain amount of energy to achieve. At the same time, there is a large amount of medium (low) temperature waste heat in the production process, and some waste heat is discharged because it cannot be used, resulting in waste. In order to save energy and reduce emissions, lithium bromide refrigeration technology is now used to recycle this part of waste heat to achieve refrigeration or heating purposes. Under normal circumstances, when the inlet temperature of waste hot water is around 90°C and cooling is required, the preferred product is hot water single-effect lithium bromide absorption chiller (see flow chart ...

AI Technical Summary

Problems solved by technology

Under normal circumstances, when the inlet temperature of waste hot water is around 90°C and cooling is required, the preferred product is hot water single-effect lithium bromide absorption chiller (see flow chart figure 1 ), because its cooling coefficient of performance (COP) can reach about 0.75, the outlet temperature of waste hot water is at least 80°C, and the temperature difference between the inlet and outlet of waste water is at most 10°C; See flow chart figure 2 ), to produce cold water of the same quality, the temperature difference between the inlet and outlet of waste hot water can be increased to about 30°C, and the outlet temperature of hot water can be reduced to 60°C. The waste water with the same flow rate can recover more heat, but its performance The coefficient COP is only about 0.4, obviously, the conversion efficiency is too low

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