January 3rd, 2017, 04:14 AM  #1 
Newbie Joined: Dec 2016 From: United Kingdom Posts: 14 Thanks: 1  conversion of entropy
Are two units kj/kg.k and kj/kg.c equal?(about unit of entropy) why? I got in trouble to calculate the entropy unit? Please help. 
January 12th, 2017, 05:50 AM  #2 
Senior Member Joined: Apr 2014 From: Glasgow Posts: 2,087 Thanks: 700 Math Focus: Physics, mathematical modelling, numerical and computational solutions 
Always use Kelvin for temperature units because Celsius is not an SI unit. Celsius should be seldom used unless you're quoting a temperature in Celsius (like T= 25 $\displaystyle ^o$C)

January 13th, 2017, 04:01 AM  #3 
Member Joined: Oct 2016 From: labenon Posts: 33 Thanks: 4 
Without any doubt entropy is kJ/K. Note entropy is an extensive quantity. The units you wrote do not correspond to entropy, but to specific entropy with units kJ/kg.K. As advised above one should always use the Kelvin units for temperature. When units are in denominator we indeed are using corresponding delta value of unit magnitude on a given scale. This fact needs to be always kept in mind. 

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conver entropy, conversion, entropy 
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