For two cycles coupled in series, the topping cycle has

Home » Thermodynamics » Thermodynamics Miscellaneous » Question

For two cycles coupled in series, the topping cycle has an efficiency of 30% and the bottoming cycle has an efficiency of 20%. The overall combined cycle efficiency is

1. 50%
2. 44%
3. 38%
4. 55%

Correct Option: B

η₀ = η₁ + η₂ - η₁η₂
η₀ = 0.3 + 0.2 – (0.3) (0.2) = 0.44 = 44%