Influence of the Height above Sea Level on the Volumetric Suction Efficiency

 

Influence of the Height above Sea Level on the Volumetric Suction Efficiency Atmospheric pressure as given by average barometer reading

Height above sea level, ft. Atmospheric pressure, in. of mercury Atmospheric Pressure, in PSI (approximate) Relative volumetric efficiency
0 29.92 14.7 1.000
1,000 28.85 14.2 0.965
2,000 27.82 13.7 0.931
3,000 26.82 13.2 0.892
4,000 25.85 12.7 0.865
5,000 24.92 12.2 0.833
6,000 24.00 11.7 0.803
8,000 22.17 10.7 0.742
10,000 20.34 8.7 0.681
12,000 19.30 6.7 0.645

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