What are the reasons for low pressure in the circulating cooling water system, and how to address it?
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What are the reasons for low pressure in the circulating cooling water system, and how to address it?
The system pressure is low; there is a leak somewhere. There are places that are blocked
When the flow resistance is reduced, the pressure will be lower. Check: Is there a short circuit in the water circuit of the equipment? Has the pump’s output decreased?
Low system pressure is related to the opening degree of the system’s valves and the number of coolers in use, as well as the amount of water circulating in the system; a reduced amount of circulating water leads to lower system pressure.
There are many reasons. The new system may be due to an incorrect selection of the water pump, while in the old system, there could be issues such as poor flow in the inlet pipes, clogged filters, air entering the pipes, or leaks in the outlet pipes
The pump has been emptied, the bypass valve is open to full extent, there are more users, the return water pressure is too low, the pump is suffering from air entrapment, and there are leakage points; the causes need to be identified and eliminated one by one.
Insufficient pump outlet pressure, high system pressure drop, leaks, etc
It can’t pump enough fluid – the outlet is set too wide, and the return flow is also set too high.