R245fa modelling

enuano · June 15, 2013, 08:49

Hi there!

My name is Edu and I'm writting my master's thesis about an ORC cycle.
Have you ever modelled R245fa in Ansys CFX? First, I want to try it considering it to behave like an ideal gas, because the pressures of my expantion are very low! I would like to know if the Peng Robinson refrigerant option is a good one? and if it's the case, wet or dry?

I also calculated a Cp of 1156 J/kgK!

ghorrocks · June 16, 2013, 07:30

Only you can answer that question as what you are doing with the fluid and the accuracy you require will determine which fluid model is required.

June 15, 2013, 08:49	R245fa modelling	#1
enuano New Member Gato Lopez Join Date: Jun 2013 Location: Stuttgart Posts: 8 Rep Power: 13	Hi there! My name is Edu and I'm writting my master's thesis about an ORC cycle. Have you ever modelled R245fa in Ansys CFX? First, I want to try it considering it to behave like an ideal gas, because the pressures of my expantion are very low! I would like to know if the Peng Robinson refrigerant option is a good one? and if it's the case, wet or dry? I also calculated a Cp of 1156 J/kgK!

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June 16, 2013, 07:30		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	Only you can answer that question as what you are doing with the fluid and the accuracy you require will determine which fluid model is required.