The Student Room Group

Recoverable Waste Heat Revision Question

Hi

I have a question regarding recoverable waste heat. How is it calculated (in kW) when the following are known:

V=2000m3/hr
p (density)=0.9kg/m3
Cp=0.2kCal/kg oC
Change Temp=120 oC
n (recovery factor)= 50%

1kCal=4.186 kJ

Please help, I have no idea...

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