Question

A two stage compressor takes in air at 1.3 bar and pressure after stage one is 4.7 bar. For minimum work of compression, the pressure at the compressor oulet is

• A. 6 bar
• B. 10 bar
• C. 13 bar
• D. 17 bar

Answer 1

The correct option is D 17 bar

For minimum work of compression
$\frac{P_3}{P_2}=\frac{P_2}{P_1}{P}_3=\frac{(P_2{)}^2}{P_1}\Rightarrow P_3=17bar$