Propane Gas Pipe Sizing

Overview

Engineering reference data for Propane Gas Pipe Sizing in gases and compressed air.

Key Formulas

Ideal Gas Law

$PV = nRT$

Pressure × Volume = moles × gas constant × temperature.

Boyle's Law

$P_1 V_1 = P_2 V_2$

At constant temperature.

Charles's Law

$\frac{V_1}{T_1} = \frac{V_2}{T_2}$

At constant pressure.

Variables

Symbol	Description	Unit
$P$	Pressure	Pa
$V$	Volume	m³
$T$	Temperature	K
$R$	Gas constant	8.314 J/(mol·K)

Propane Gas Piping Capacity Reference Table

Engineering Notes and Conversion Factors

Applicable Pressure Range: These tables and diagrams apply to propane gas piping systems with upstream pressures above 5 psig (35 kPa).

Unit Conversions:

• 1 MBH = 1,000 BTU/hr
• 1 CFM ≈ 2.54 MBH

Design Considerations:

• Pipe Material: Steel pipes Schedule 40
• Fittings Factor: For equivalent pipe length calculations, add 20% to account for fittings: $L_{\text{equivalent}} = L_{\text{actual}} \times 1.2$
• Pressure Drop: Tables based on 10% pressure drop

Interpolation Note: For pressure values not listed in the table, linear interpolation between adjacent pressure entries provides reasonable engineering estimates.

Interactive Charts

References

• Original Source