Cascading air-cooling composite single-effect and double-effect type lithium bromide absorption refrigerating machine

Abstract

The invention relates to a cascading air-cooling composite single-effect and double-effect 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 double-effect low temperature stage refrigeration set (44), an air cooler (21) and a high-temperature cooling water pump (19). The air cooler (21) and the high-temperature cooling water pump (19) are connected to a high-temperature cooling water pipeline between a high temperature stage condenser water outlet pipe (23) and a high temperature stage absorber water inlet pipe (18) of the single-effect high temperature stage refrigeration set in series. A high temperature stage evaporator water outlet pipe (30) of the single-effect high temperature stage refrigeration set (43) is connected to a low temperature stage cooling water inlet pipe (38) of the double-effect low temperature stage refrigeration set (44), and a low temperature stage cooling water outlet pipe (39) of the double-effect low temperature stage refrigeration set (44) is connected to a high temperature stage evaporator water inlet pipe (29) of the single-effect high temperature stage refrigeration set (43). According to the refrigerating machine, cold water of 5-10 DEG C can be prepared on the occasions with about 50 DEG C, and loss of cooling water in the running process of the refrigerating machine is avoided.

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 water inlet pipe 6 and the cooling water outlet pipe 9 are generally connected with the external cooling water circulation pump of the unit and the open cooling tower (not shown in the figure), and the cooling tower cools 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 of the unit. This kind of...

Images