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Eductor Reference Tables

Temperature Entrainment Ratio
  Gas Temperature, °F
  100 200 300 400 500 600 700 800 900 1000
Steam Ratio 0.992 0.958 0.925 0.892 0.860 0.818 0.792 0.760 0.728 0.692
Air Ratio 0.994 0.970 0.945 0.923 0.898 0.874 0.850 0.825 0.803 0.778
 
Molecular Weight Entrainment Ratio
  Molecular Weight
  10 20 30 40 50 60 70 80 90 100 110 120 130 140
Ratio 0.58 0.85 1.02 1.14 1.23 1.32 1.38 1.43 1.46 1.49 1.52 1.55 1.57 1.60
 
Entrainment Ratio = (weight of gas) / (weight of air)
 
Molecular Weights of Common Gases
Name Formula Molecular Weight
Ammonia NH4 18.038
Ammonium NH3 17.03
Benzene C6H6 78.12
Carbon Dioxide CO2 43.999
Carbon Monoxide CO 28.01
Chlorine CI2 70.906
Ethane C2H6 30.07
Hydrogen H2 2.016
Methane CH4 16.043
Oxygen O2 31.998
Sulfer Dioxide SO2 64.058
Water H2O 18.015
 
 
 
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