Hot-water lithium bromide absorption-type water chilling unit driven by ultra-low-temperature waste heat

Abstract

The invention relates to a hot-water lithium bromide absorption-type water chilling unit driven by ultra-low-temperature waste heat. The hot-water lithium bromide absorption-type water chilling unit driven by ultra-low-temperature waste heat comprises a hot-water generator, a condenser, an evaporator, an absorber, a heat exchanger, a generation pump and a refrigerant pump, wherein each of the evaporator and the absorber is divided into a high-temperature section and a low-temperature section; a concentrated solution concentrated by the hot-water generator self-flows into a spray pipe of the absorber in the high-temperature section via the heat exchanger to be sprayed; an intermediate solution output from the absorber in the high-temperature section is lifted by an absorption pump and enters into a spray pipe of the absorber in the low-temperature section to be sprayed; and a dilute solution output from the absorber in the low-temperature section is lifted by the generation pump and enters into a spray pipe of the hot-water generator via the heat exchanger to be sprayed. Through a new structure and a refrigeration flow, a cold water cooling gradient is reasonably utilized, so that the concentration difference of a cyclic solution is increased, the heat exchange temperature difference is increased, the heat exchange area is reduced, the cycle amount of the solution is reduced, and the material cost is lowered; and therefore, the performance coefficient of the unit is greatly increased, and the comprehensive economic and social benefits of energy conservation and emission reduction are realized.

Description

technical field [0001] The invention relates to a hot water lithium bromide absorption chiller driven by ultra-low temperature waste heat. It 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 can be used to recycle this part of waste heat to achieve refrigeration or heating purposes. For example, ordinary hot water lithium bromide absorption chillers (see flow chart figure 1 ) drives waste hot water at an inlet and outlet temperature of 95°C / 85°C, and produces cold water with an inlet and outlet temperatur...

AI Technical Summary

Problems solved by technology

For this parameter condition, the selection of ordinary hot water unit cannot meet the requirements. If other types of units are selected, the cost of materials is high and the coefficient of performance is low.

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