Problem 21.3
engine cycle:       

Please wait for the animation to completely load.

There is a time delay—since the system must be in equilibrium—before the initial change of state occurs.

You must go in order.

In this animation N = nR (i.e., kB = 1). This, then, gives the ideal gas law as PV = NT.  To run this Brayton cycle, go through the steps in order.  Restart.

  1. Describe the types of expansions and compressions that are a part of this engine cycle. 
  2. For this monatomic gas, find the work done in each step. 
  3. What is the net work done? 
  4. What is the efficiency of this cycle?

(Note that the high temperature and low temperature reservoirs do not stay at constant temperatures).

 

 

Problem authored by Anne J. Cox.
© 2004 by Prentice-Hall, Inc. A Pearson Company