Pump Selection
Pump Selection
(OP)
If I have to pump chilled water at a rate of 850 gpm, how many pumps should be ideal for pumping this amount of water?
On which basis we select that this much pumps should be chosen?
your answers will be highly appreciated.
On which basis we select that this much pumps should be chosen?
your answers will be highly appreciated.





RE: Pump Selection
RE: Pump Selection
RE: Pump Selection
Actually i have to serve three building with chilled water and for that the flow is 850 gpm and head is 145' (I just count longest run and found dynamic head and add static head and add minor losses). So if i want to put two pumps in parellel other than a standby, can i go for this or is there any rule of thumb for considering the quantity of pumps and how can i apply the diversity factor on each pump.... any formula?
RE: Pump Selection
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"The problem isn't finding the solution, its trying to get to the real question." BigInch
http://virtualpipeline.spaces.live.com/
RE: Pump Selection
District cooling systems rarely pump chilled water from one tank to another. generally they service a number of buildings where demand changes from night to day and summer to winter. Buildings are taken out of a CHW system if they do not have tenants.
First exercise would be to do the hydraulic study for the diurnal and annual loadings. Then you have a basis for investigating the pump sizing and numbers.
RE: Pump Selection
stainer is correct....a system study is necessary
How about turndown of the system ?
What happens to you system if a pump fails and takes a month to fix (not uncommon)????
-MJC