L22A
       Isentropic process

L22B
        Example 6.9 isentropic process of air
        Example 6.10 considering air leaking from a tank
        Ball park number

L22C
        Isentropic efficiency
        Isentropic turbine efficiency
        Example 6.11 determining turbine work using the
        isentropic efficiency

L22D
        Example 6.12 evaluating isentropic turbine efficiency
        Isentropic nozzle efficiency
        Example 6.14 evaluating isentropic nozzle efficiency
        Isentropic compressor and pump efficiency
        Example 6.15 evaluating isentropic compressor efficiency