In this system, cold water is cooled in the evaporator by low-temperature refrigerant water that has undergone pressure reduction and throttling from the condenser. As the cold water absorbs heat, it evaporates into refrigerant vapor, which then moves to the absorber. There, it is absorbed by a concentrated solution, turning it into a diluted solution. The diluted solution is pumped through the heat exchanger and heat recovery unit, where it warms up before entering the regenerator. Inside the regenerator, the dilute solution is heated to become a concentrated solution again.
The concentrated solution then flows back through the heat exchanger, cooling down as it goes, and is dripped onto the cooling water pipes in the absorber. There, it absorbs the refrigerant vapor from the evaporator, becoming a diluted solution once more. Meanwhile, in the regenerator, water vapor is produced when high-temperature water heats the lithium bromide solution. This vapor is cooled in the condenser, undergoes throttling, and becomes low-temperature refrigerant water. It then enters the evaporator and drips onto the cold water pipes, further cooling the incoming cold water.
The system features two sets of regenerators, condensers, evaporators, absorbers, heat exchangers, solution pumps, and heat recovery units. These are connected in series using both heat source water and cold water. This setup allows for optimal distribution of solution circulation and cooling capacity between the high-temperature and low-temperature sides. It ensures the best possible configuration of temperature, pressure, and concentration parameters across both cycles. By maximizing the use of heat from the heat source, the system can lower the hot water temperature to as low as 66°C. This cycle continues repeatedly, ultimately achieving the goal of producing low-temperature cold water efficiently and effectively.
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