Cascade air-cooled lithium bromide absorption refrigerator

Abstract

The invention relates to a cascading air-cooling type lithium bromide absorption refrigerating machine, and belongs to the technical field of air conditioning equipment. The refrigerating machine comprises a single-effect high temperature stage refrigeration set (43), a single-effect low temperature stage refrigeration set (44), an air cooler (22) and a high-temperature cooling water pump (20). The air cooler (22) and the high-temperature cooling water pump (20) are connected to a high-temperature cooling water pipeline between a high temperature stage condenser water outlet pipe (24) and a high temperature stage absorber water inlet pipe (19) in series. A high temperature stage evaporator water outlet pipe (32) of the single-effect high temperature stage refrigeration set (43) is connected to a low temperature stage cooling water inlet pipe (39) of the single-effect low temperature stage refrigeration set (44), and a low temperature stage cooling water outlet pipe (40) of the single-effect low temperature stage refrigeration set (44) is connected to a high temperature stage evaporator water inlet pipe (31) of the single-effect high temperature stage refrigeration set (43). According to the refrigerating machine, loss of cooling water in the running process of the refrigerating machine is avoided, cold water of 5-10 DEG C can be prepared on the occasions with the environment temperature being about 50 DEG C. The refrigerating machine is suitable for preparing cold water in high-temperature arid areas.

Description

technical field [0001] The invention relates to a lithium bromide absorption refrigerator. It belongs to the technical field of air conditioning equipment. Background technique [0002] In the past, a flue gas single-effect lithium bromide absorption refrigeration unit such as figure 1 shown. The unit is composed of a flue gas generator 11, a condenser 10, an evaporator 3, an absorber 2, a solution heat exchanger 1, a solution pump 4, a refrigerant pump 5, and pipelines and valves connecting various components. The cooling water inlet pipe 6 and the cooling water outlet pipe 9 of the unit are generally connected with the external cooling water circulation pump of the unit and an open cooling tower (not shown in the figure), and the cooling tower cools down the circulating cooling water of the unit. Due to the evaporation loss and drift loss when the cooling water flows through the cooling tower, the cooling water needs to be replenished continuously during the operation o...

AI Technical Summary

Problems solved by technology

This type of unit is only suitable for places where water resources are relatively economical, and its use in arid areas will be limited by water shortages

In addition, in high-temperature and arid areas, not only is there a shortage of water, but also because the ambient temperature is too high, the circulating cooling water temperature of the lithium bromide absorption refrigerator is relatively high, and it is difficult to produce low temperature (temperature 5~ 10℃) cold water

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