Chapter 9.12, Problem 204FEP

In an ideal Brayton cycle with regeneration, air is compressed from 80 kPa and 10°C to 400 kPa and 175°C, is heated to 450°C in the regenerator, and is then further heated to 1000°C before entering the turbine. Under cold- air-standard conditions, the effectiveness of the regenerator is

1. (a)   33 percent
2. (b)   44 percent
3. (c)   62 percent
4. (d)   77 percent
5. (e)    89 percent