- #1
mouser
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I'm having a problem determining the total entropy change in a metal quenching problem. Here is the information I am given (subscript 'm' is for metal, 'w' is water):
mm = 20 kg
mw = 1000 kg
T1m = 800 C
T1w = 30 C
Cpm = .4 kJ/kg K
Cpw = 4.18 kJ/kg K
With this information, I found T2 to be 304.6 K.
How can I obtain the entropy change with this information? I have no pressure values, and all my entropy equations involve pressure, or specific volume which depends on pressure. Thanks for any help.
mm = 20 kg
mw = 1000 kg
T1m = 800 C
T1w = 30 C
Cpm = .4 kJ/kg K
Cpw = 4.18 kJ/kg K
With this information, I found T2 to be 304.6 K.
How can I obtain the entropy change with this information? I have no pressure values, and all my entropy equations involve pressure, or specific volume which depends on pressure. Thanks for any help.