Low-temperature exhaust heat recovery type lithium bromide absorption type cold and hot water system

Abstract

The invention belongs to the field of refrigeration equipment, and particularly relates to a low-temperature exhaust heat recovery type lithium bromide absorption type cold and hot water system. The low-temperature exhaust heat recovery type lithium bromide absorption type cold and hot water system comprises a condenser, an exhaust heat recoverer, an absorber, an evaporator, a plurality of circulating pumps and connecting pipelines; the system has two working modes of refrigerating and heating, when the system works in the heating mode, low-temperature exhaust heat is connected to the exhaustheat recoverer through the corresponding pipeline, cooling agent water is introduced into a dripping device in the exhaust heat recoverer through the corresponding pipeline, the cooling agent water dripped by the dripping device is heated by the exhaust heat recoverer to generate cooling agent steam, and the refrigerant steam and heating water in a heat transfer pipeline are subjected to heat exchange in a vacuum environment to obtain heating hot water. The low-temperature exhaust heat recovery type lithium bromide absorption type cold and hot water system has the advantages of being capable of realizing exhaust heat recovery for refrigerating in summer and heating in winter through mode switching, simplifying an exhaust heat recovery system and saving the investment.

Description

technical field [0001] The invention belongs to the field of refrigeration equipment, and in particular relates to a low-temperature waste heat recovery type lithium bromide absorption type cold and hot water system. Background technique [0002] The low-temperature waste heat recovery lithium bromide absorption refrigerator is driven by low-temperature waste heat (generally waste heat in the form of liquid carrier, gaseous carrier, etc.) to produce cold water, because it can recycle low-temperature waste heat and use water as the refrigerant. Pollution, large system capacity, and convenient system maintenance and management have been widely used in the field of industrial waste heat recovery refrigeration, such as steel, petrochemical, chemical, coking, textile, etc. At present, the low-temperature waste heat recovery lithium bromide absorption system can only recover waste heat for refrigeration, but cannot provide heating, mainly because the grade of low-temperature waste...

AI Technical Summary

Problems solved by technology

At present, the low-temperature waste heat recovery lithium bromide absorption system can only recover waste heat for refrigeration, but cannot provide heating, mainly because the grade of low-temperature waste heat is low, and the lithium bromide solution cannot be heated and concentrated to the required temperature and concentration; in fact, many projects need to recover waste heat for summer refrigeration , Heating in winter to maximize waste heat recovery

The current practice is mainly to meet the demand through the combination of low-temperature waste heat recovery lithium bromide absorption refrigerator and heating heat exchanger (such as figure 1 As shown), on the one hand, this makes the waste heat recovery system more complicated, and on the other hand, it increases the investment in the waste heat recovery system (the quality of industrial low-temperature waste heat is poor, and a heating heat exchanger with special corrosion-resistant materials is required)

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