The cold water is cooled in the evaporator by the low-temperature refrigerant water after the pressure reduction and throttling from the condenser. The cold water absorbs the heat of the cold water and evaporates, becomes the refrigerant vapor, enters the absorber, is absorbed by the concentrated solution, and the concentrated solution becomes Dilute solution. The dilute solution in the absorber is sent to the heat exchanger and the heat recovery unit by the solution, and the temperature rises, and finally enters the regenerator, where the dilute solution is heated to become the final concentrated solution. The concentrated solution flows through the heat exchanger, the temperature is lowered, enters the absorber, drip on the cooling water pipe, and absorbs the refrigerant vapor from the evaporator to become a dilute solution. On the other hand, in the regenerator, the water vapor generated after the external high-temperature water heats the lithium bromide solution is cooled in the condenser, is throttled by the decompression, becomes the low-temperature refrigerant water, enters the evaporator, and drip onto the cold water pipe. Cool the cold water entering the evaporator.
The system consists of two sets of regenerators, condensers, evaporators, absorbers, heat exchangers, solution pumps and heat recovery units, and the two sets of systems are organically combined by means of a series connection of heat source water and cold water. Optimal distribution of solution circulation and cooling capacity on the high temperature side and low temperature side, to achieve optimal configuration of temperature, pressure, concentration and other parameters between the two cycles, and to maximize the use of heat from the heat source water, so that the hot water temperature can be lowered To 66 ° C. The above cycle is repeated as it is, and finally the purpose of producing low-temperature cold water is achieved.
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