The chilled water system mainly consists of the evaporator heat exchanger tube of the refrigeration unit, chilled water circulating pump, water distributor, water collector, expansion tank, make-up water pump, water treatment device, and the corresponding valves, piping and other components of the closed system.
1, to ensure that the freezer evaporator through enough water to make the evaporator work properly to prevent freezing.
2, to the chilled water users to provide sufficient water to meet the use of requirements.
3, in order to meet the use of the requirements of the premise as far as possible to reduce the circulating water pump power consumption.
Extended information
Water-cooled chiller using shell and tube evaporator to make the water and refrigerant heat exchange, refrigerant system in the absorption of heat load in the water, so that the water cooled down to produce cold water, through the compressor will be brought to the role of heat to the shell-and-tube condenser, by the refrigerant and the water to carry out heat exchange, so that the water absorbs heat and then through the water pipe will be brought out of the heat External cooling tower dissipation (water cooling).
Beginning by the compressor inhalation of low-temperature and low-pressure refrigerant gas after evaporation refrigeration, and then compressed into a high-temperature and high-pressure gas sent to the condenser; high-pressure and high-temperature gas by the condenser cooled so that the gas condensation into a normal temperature and high pressure liquid.
When the room temperature and high pressure liquid flows into the thermal expansion valve, by throttling into a low temperature and low pressure wet vapor, flow into the shell and tube evaporator, absorbing the heat of the frozen water in the evaporator so that the water temperature drops; evaporation of the refrigerant sucked back to the compressor, and then repeat the next refrigeration cycle.
Baidu Encyclopedia - Chiller
Baidu Encyclopedia - Chilled Water System