Chapter 9.12, Problem 1P

What are the air-standard assumptions?

To determine

What do air-standard assumptions mean?

Explanation of Solution

Analysis of actual gas power cycles is more complex. Hence, to minimize the analysis to a manageable level, the following approximations are made.

These are known as air-standard assumptions. The assumptions include:

• Ideal gas of the cycle is taken as the air that circulates continuously in a closed loop and regarded as working fluid.
• The processes are reversible internally in the cycle.
• The process of heat addition replaces combustion process from external source.
• Heat-rejection process replaces exhaust process which finally restores working fluid to the initial position.