The invention discloses a cold water
system capable of reducing
operation time of a main frame. The cold water
system comprises a mechanical
refrigeration system and a natural cold
source system, wherein the mechanical
refrigeration system comprises a cold source device, a data
machine room used precise air conditioner, a
cooling tower, a first circulating water pump and a cooling water pump, themechanical
refrigeration system provides first
chilled water with the temperature
ranging from 5 DEG C to 23 DEG C through the cold source device, the first
chilled water is conveyed to a low-temperature cold water coil
pipe in the data
machine room used precise air conditioner through a
chilled water pipeline, the first circulating water pump supplies power to the first chilled water, the naturalcold
source system comprises a heat exchange device, the data
machine room used precise air conditioner, a
cooling tower, a second circulating water pump and a cooling water pump, wherein the naturalcold
source system provides cooling water through the
cooling tower, the heat exchange device is used for converting the cooling water into second chilled water with the temperature
ranging from 5 DEG C to 23 DEG C, the second chilled water is conveyed to a high-temperature cold water coil
pipe in the data machine room used precise air conditioner through the chilled water pipeline, and the second circulating water pump is used for providing power for the second chilled water.