The steady-flow adiabatic compressor shown in Fig. P11.13 has pressure drops at the inlet and the outlet: that is, ΔP 1 = r 1 ṁ n and ΔP 2 = r 2 ṁ n . The isentropic efficiency of the compressor...

The steady-flow adiabatic compressor shown in Fig. P11.13 has pressure drops at the inlet and the outlet: that is, ΔP₁
= r₁ṁⁿ
and ΔP₂
= r₂ṁ
ⁿ. The isentropic efficiency of the compressor stage (or sequence of stages) is 𝜂_c
<>₁
and show that Ẇ
_c
does not have a minimum with respect to ΔP₁
(or ṁ , or ΔP₂) [40].