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27-06-2016, 08:08 AM #1
How to calculate the mass flow rate ?
Hello all, I don't know if it's the right place to post this but forgive me if it's not.
I need to calculate the mass flow rate of a glycol circulated around a mold Project 2.jpg
The load in the solidification cell is 92000 Joule, I want to get it to -15°C in about 30 Minutes so I think I will need to get the inlet temperature of glycol to -20°C.
what I am thinking about is that:
Capacity=Load/Time=92000/(30*60)=52 Watt
Capacity=M.*Cp*(Tout-Tin)
If that is true then I have two unknowns mass flow rate and the output temperature then how to calculate the mass flow rate to get the right pump?
Correct me if I am wrong.
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27-06-2016, 01:52 PM #2
Re: How to calculate the mass flow rate ?
You could calculate it emperically. Tune the flow until you detect an outlet temperature of -15. Only possible of course if you have a practical setup.