Chilled water distributaion system
Chilled water distributaion system
(OP)
a chilled water distribution system, chilled water pump delivered the water in the chiller with flow 15.2 m3/hr. pressure drop in chiller and load is 34m. system is closed, chilled water distribution pump developed head is 24m and 3m NPSHR . how i calculate the operating pressure of the system ? also the relationship between operating pressure and design pressure





RE: Chilled water distributaion system
RE: Chilled water distributaion system
Operating pressure of the system could be anything from less than atmospheric to 10 barg or more. This depends wholly on how your closed loop is pressurized.
Operating pressure max ( basically d/s of the pump) must be less than design pressure of the lowest rated component.
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RE: Chilled water distributaion system
RE: Chilled water distributaion system
e.g. if the pump dead heads at 30m and the discharge pipe work goes vertically 25m before returning to the pump suction, the max pressure that would be observed if a valve was closed on the pump discharge would be 55m.
Ignore frictional/dynamic losses for the purpose of design pressure checks.
The only relationship between operating and design pressure is that operating pressure<=design pressure.
As a chem eng/metallurgist the first part of any answer I give starts with "It Depends"