选用调节阀时计算CV值的EXCEL文件(Cv计算公式)

THESE FORMULAS ARE ONLY GOOD ESTIMATIONS ACTUAL RESULTS VARY PER APP GAS GAS

This calculates Cv for a given flow

INPUT INPUT INPUT INPUT ANSWER Acetylene

specific Flow inlet outlet ratio Cv Air

gravity SCFM press. PSI press. PSI Ammonia

1.000 3.602116.0000.5808.550.06Argon

0.5500.212 2.0300.580 1.090.03Arsine

0.9670.1067.2500.580 1.440.01Butane

Carbon Dioxide

This calculates flow(Q) for a given Cv Carbon Monoxide

Chlorine

INPUT INPUT INPUT INPUT ANSWER Ethane

specific CV inlet outlet ratio Flow Ethylene

gravity press. PSI press. PSI SCFM Helium

1.000

2.005000.000750.000 6.565014.7Hydrogen

1.000

2.003000.000750.000

3.94301

4.7Hydrogen Chl

1.000

2.001000.000750.000 1.33874.5Hydrogen Sulphide

Methane

This calculates Cv for a given flow

LIQUID

INPUT INPUT INPUT INPUT ANSWER

specific Flow inlet outlet Cv

gravity gal/min press. PSI press. PSI Gasoline

0.900 3.960217.517.40.27Hydraulic Oil Mineral base

0.800 3.960217.517.40.25Hydraulic Oil Phosphate Ester base

Hydraulic Oil Standard Mil 5606 This calculates flow(Q) for a given Cv Hydraulic Oil Water Glycol base

Kerosene

INPUT INPUT INPUT INPUT ANSWER Water(H2O)

specific CV inlet outlet Flow

gravity press. PSI press. PSI gal/min

1.0710.605000.01500.034.3

1.0710.602500.01500.018.3

1gal＝3.785L

RESULTS VARY PER APPLICATION

specific specific

gravity gas gravity

0.907Methl Chloride 1.785

1.000Natural Gas0.667

0.596Nitric Oxide 1.037

1.379Nitrogen0.967

2.695Nitrous Oxide 1.53

2.067Oxygen 1.105

1.529Propane 1.562

0.967Propene(propylene) 1.451

2.486Sulphur Dioxide 2.264

1.049Silane 1.195

0.975Xenon 4.823

0.138

0.070

1.268

1.190

0.554

specific

gravity

water=1

0.750

c Oil Mineral base0.800

c Oil Phosphate Ester base 1.100

c Oil Standar

d Mil 56060.830

c Oil Water Glycol base 1.050

0.820

1.000