Chilled water capacity
Chilled water capacity
(OP)
I have a question on a chiller capacity. If I have a unit rated @ 36,000 btu/hr at 44 degrees what would my btu's be at 80 degrees.
Thanks
Thanks
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RE: Chilled water capacity
What would be at 80 degrees in the second scenario?
Isn't the BTUH the BTUH no matter what? At 54 degree entering and 44 degree leaving water temps (ie, a 10 degree dT) you use Q = 500 x (dT) x gpm. You would use the same formula to get the desired info no matter what temp you are talking, just the dT and the gpm can change, right?
Maybe I'm confused or don't understand the question.
Ed
www.engineerboards.com
RE: Chilled water capacity
Like HVACctrl says, 3rt (36000 BTUH) is a pretty small chiller, and I'm guessing you mean a packaged or split air/air unit.
Manufacturer performance datasheets will provide tables indicating the actual capacity of the unit for different ambient and on-coil conditions - dry bulb, wet bulb, airflow. You can typically expect the actual capacity to be close (+/- 1000BTUH) to the nominal capacity around 80degF ambient, with other conditions typical.
RE: Chilled water capacity
And for random information, 36000 BTUH is somewhat small but we make them down to about 1/2 ton (6000BTUH) here.