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Calculator start selection

Read all about available
deployments.
In any way of utilizing calculator, Internet connection is required, for authentication at least.

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Available in download version

save/open multiple results

export to word and excel

print results

custom fluid properties

K factor for fittings, resistance coefficient

pipe surface roughness selection

select between gauge and absolute pressure

compressible isothermal flow

dry air isothermal flow

gas offtake flow

natural gas flow

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Why you should use this calculator?

The calculator can be used for estimation of flow rate, pipe diameter and heat power of
liquefied petroleum gas - LPG.
Liquefied petroleum gas is a mixture of propane, butane, and other components.
As an example, you can use the calculator to determine the necessary flow rate of an LPG
in a gas furnace, for required burner heat power.

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How is the calculation executed?

The calculator is applicable for calculation of flow rate and heat power of gas and
liquid phase of LPG. It can be used for calculation of clear propane or clear butane gas
flow as well.

Propane and butane in a gas state are compressible. The calculator considers LPG as
incompressible which is correct only for LPG liquid state.
All physical properties, like mixture density or LPG component partial pressure,
are calculated for the selected propane-butane mixture ratio.

The calculator can be used for computation of pipe diameter when the flow rate is known.
The flow rate of LPG can be presented as mass flow rate, volume flow rate of the
liquid phase or as a volume flow rate of the gas phase at standard conditions.

With the calculator, you can convert between mass and volume flow rate (liquid or gas phase).
The calculator calculates a gas phase flow rate of LPG at normal conditions:
pressure (atmospheric) p = 101325 Pa and temperature T=273.15 K

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When is this calculator not relevant?

You can't use this calculator to calculate pressure drop through the pipe line. For that purpose please
select pressure drop calculator for liquids or for gases.

# Need a helping hand?

If you need a quick calculation, but you are not still familiar how to use the calculator, you
can order calculation service from the calculator developer.