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Low Pressure Flow of Natural Gas

in DriscoPlex® Pipe

Natural_Gas_Low_Pressure_Flow_PP817-1

1. Average ID used in all calculations. It equals the nominal OD minus 2.12 times the minimum wall thickness.

2. For flow in BTU/hr at sea level multiply flow by 1000. Heat value of Natural Gas is 1000 BTU/scf at sea level.

3. Calculations used low pressure (< 1.5 psi) equation from Chapter 12, National Fuel Gas Code (2002).

Natural_Gas_Low_Pressure_Flow_PP817-2

Q = Flow (cubic ft per hr), D = ID (in), Cr = 0.6094 (natural gas), ?H = pressure drop (in w.c.),

L = equivalent length (ft)


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Low Pressure Flow of Natural Gas