Chilled water header
Chilled water header
(OP)
Hello,
Please help me with a following issue:
I have a chiller plant with a chilled water pump house.
In the pump house there are 6 centrifugal pumps [3w+3s, 2x50kW(170 l/s), 2x45kW(130 l/s), 2x30kW(100 l/s)] on suction side connected to single header with 6 nozzles (2x12", 2x14", 2x16").
The header is 32", length 13m', center line same as pump suction center.
The header has a drain point only on one side.
The client is requesting header to be sloped (1%) towards the drain point.
Is this necessary and why not ?
Thank you for your time and answers.
Please help me with a following issue:
I have a chiller plant with a chilled water pump house.
In the pump house there are 6 centrifugal pumps [3w+3s, 2x50kW(170 l/s), 2x45kW(130 l/s), 2x30kW(100 l/s)] on suction side connected to single header with 6 nozzles (2x12", 2x14", 2x16").
The header is 32", length 13m', center line same as pump suction center.
The header has a drain point only on one side.
The client is requesting header to be sloped (1%) towards the drain point.
Is this necessary and why not ?
Thank you for your time and answers.





RE: Chilled water header
Keep the header flat. Sloping it just makes all the connections off centre and is a right royal PITA for everyone.
A drain on a header is simply there to assist in maintenance, it is not a continuous gravity drain like a rain gutter or a sewer line (I think that's where he's got the 1: 100 from)
If the client really wants to push it just add a few more 1" plug points or drain connections along the header.
Unless the drain point is being used every day and you really need to drain it all to a 99% empty state then don't so it.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Chilled water header
RE: Chilled water header
@georgevarghese: Yes, you are right. There is a lowpoint drain on the pump itself.
Thank you.