Carnot Cycle Graphs: Understand Work and Temperature

[Bengo]

Hello,

In the Volume vs. pressure graph I understand the area under the curve is work. However, I have a hard time reconciling this graph with a pressure vs. temperature or a temperature vs. volume graph. What does the area inside the box represent? Work? Like which parts on the P vs. V graph correspond to the parts on these graphs. I'm so confused. I would appreciate any help. Thanks.

 

[sankalpmittal]

Hello,

In the Volume vs. pressure graph I understand the area under the curve is work. However, I have a hard time reconciling this graph with a pressure vs. temperature or a temperature vs. volume graph. What does the area inside the box represent? Work? Like which parts on the P vs. V graph correspond to the parts on these graphs. I'm so confused. I would appreciate any help. Thanks.

They are used to represent phase diagrams. The area under pressure temperature graph denotes phase existences and is mathematically not denoting anything.

http://en.wikipedia.org/wiki/Phase_diagram

 

[technician]

If you want to calculate energy and work then P against V (it is usually this way) rather than P or V against T is the graph you need.