Stirlingengineforum.com

Hi, I am I am trying to understand and model the Carnot Cycle. I used Excel for simple modeling and plotting ( https://drive.google.com/open?id=0B-_W_ngX_PC_S1IxdE1UVGdNRkk ). Now I get how to draw hot and cold isotherms, but I don't know how to get the shape (curvature) of adiabats. Is there any eq...