Chiller Flow
Chiller Flow
(OP)
What is the formula to calculate a chiller bundle flow in GPM if the only info you have is the delta T in Fahrenheit and the pressure drop across the bundle in ft/min?
Jim
Jim
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RE: Chiller Flow
RE: Chiller Flow
Jim
RE: Chiller Flow
The most practical option for you now is to clamp an ultrasonic flow meter onto the pipe and get areal reading!
good luck
RE: Chiller Flow
RE: Chiller Flow
you say you have flow velocities. For what point in the circuit do you have these? Can't you work out the GPM from that velocity and the ID of the pipe?
Alternatively, if you know what duty the chiller is performing you can work back to the GPM via the delta T.
RE: Chiller Flow
Be careful with velocities, because in order to determine flow, you will need the average velocity across the pipe cross section. Velocity is max at center of flow, and near zero at pipe walls. Ultrasonic flowmeters are not acurate with clean brine or water, as far as I know, they are useful with slurry water, they need some solid particles to make the ulstrasound bounce.
Get the pump curves, they will give you the flow for certain pressure. If this data is not available either, and this is an important project, say more than 100 tons, have an in-line flowmeter installed, and determine the exact flow.