Finding Efficiency from a P-V Graph

AI Thread Summary
To determine efficiency from a P-V graph, one must analyze the area enclosed by the process path, which represents work done by the engine. The efficiency can be calculated using the formula: efficiency = (work output / heat input). In the context of a reversible heat engine, the specific processes, such as constant volume and constant pressure, influence the calculations. For the given PV diagram of argon, understanding the thermodynamic processes is crucial for accurate efficiency assessment. Ultimately, the efficiency of the engine is derived from the relationship between work and heat transfer in the depicted processes.
yossup
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uh...just wondering but how do you find out the efficiency from a P-V graph?
 
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depends on the engine's process
 
The figure is a PV diagram for a reversible heat engine in which 1.0 mol of argon, a nearly ideal monatomic gas, is initially at STP (point a). Points b and c are on an isotherm at T = 423 K. Process ab is at constant volume, process ac at constant pressure.

How would I go about finding the efficiency from such a graph?
 

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