Compressor Map Calculator

Plot operating point on a turbo compressor map using mass airflow, pressure ratio, and corrected speed to check surge/choke margins.

Input Parameters

Results

--
Corrected Airflow
lb/min
--
Est. Compressor Efficiency
%
--
Compressor Outlet Temp
°F
--
Surge Margin
%
Note: Operating near the surge line causes compressor stall and potential turbo damage. Aim for 15-20% surge margin at peak boost.

Reference

Corrected Flow = Mass Flow x sqrt(T_inlet/T_ref) / (P_inlet/P_ref) T_ref = 518.67 R, P_ref = 14.696 psia T_out_ideal = T_in x PR^((gamma-1)/gamma) T_out_actual = T_in + (T_out_ideal - T_in) / eta Surge Margin = (Corrected Flow - Surge Line) / Corrected Flow x 100