10
Product introduction
③
Water treatment and control
When the Circulating cooling water runs for a long time, it will produce algae, and salinity will
rise, resulting in heat exchanger fouling, which will affect the heat transfer efficiency. It is better
to process timely. Electronic water treatment meters should be included for scale resistance
protection and water quality stablization. They have been widely applied in engineering now.
Therefore the electronic water treatment meter is preferred in the cooling water system design.
You will experience accumulation of sludge in the Water Cooled VRF water system after
operation (caused by dust in the air), which needs regular cleaning (generally one time a year).
Professional central AC water system cleaning agent is recommended.
Water quality control
Item
Standard requirements
Influencing factors
Standard
PH
7.5-9.0
○/□
Conductivity
≤200uv/cm(25°C)
○/□
Chlorine ion
≤50ppm
□
Sulfate ion
≤50ppm
□
Total iron
≤0.3ppm
□
Alkali ion
≤50ppm
□
Total hardness
≤50ppm
○
Reference
Sulfion
/
□
Ammonium ion
/
□
Silicon
≤30ppm
○
Notes: ○: scaling □: erosion
Closed-type cooling towers
Gate valve
Soft joint
Water filter
Pump
Water treatment device
②
Cooling towers and pumps
a) Select the cooling tower capacity based on the system’s water circulation volume.
b) The unit water system must select the closed cooling tower.
c) Circulating Pump is generally vertical pipeline pump. It is according to the length of the
pipe and drag to select a pump head. To ensure system security, water pump should remain a
standby pump.
