LPG composition

Select volume or mass percent composition

Volume fraction %vol

Ratio of propane or butane volume to the total volume of the mixture

Mass fraction %wt

Ratio of propane or butane mass to the total mass of the mixture

Description

q liq - volume flow rate of the liquid phase

LPG flow when it is in the liquid phase, before the evaporator

q gas - volume flow rate of the gas phase at normal conditions

LPG flow when it is in the gas phase, after the evaporator

V liq - velocity of the liquid phase

The velocity of LPG when it is in a liquid phase before it evaporates

V gas - velocity of the gas phase

The velocity of LPG when it is in the gas phase, after the evaporator

D liq - pipe diameter of the liquid phase

Internal pipe diameter of the LPG line liquid phase before the evaporator

D gas - pipe diameter of the gas phase

Internal pipe diameter of the LPG line gas phase after the evaporator

ṁ - mass flow rate

LPG flow rate in terms of mass flow in the unit of time. Conserved between liquid and gas phase of LPG

P - combustion heat power

Heat power generated after the combustion of LPG. Actual heat power should be reduced for the efficiency loses

LHV_G - lower heating value - mass

The heating value of LPG mixture - energy released during the combustion of a unit of mass

p - absolute pressure of LPG gas

The pressure of the LPG after the evaporator or after the pressure control valve

T - gas temperature

The temperature needed to calculate LPG density after the evaporator or after the pressure control valve

ρ gas - gas actual density

Calculated density for entered pressure and temperature, and mixture components ratio

ρ gas_nor - gas density at normal conditions

A density of LPG mixture at normal conditions p=101325 Pa and t=0⁰C

M -molar mass

Calculated molar mass for the selected ratio of propane and butane in the LPG mixture

Calculation setup

Select value to calculate. You should enter not selected one.

P

combustion heat power calculation

q liq/q gas/ṁ

LPG flow rate calculation

Select value to input. You should enter selected one. The other two will be calculated

ṁ

mass flow rate

q liq

liquid phase flow rate

q gas

gas phase flow rate

Select value to input. You should enter selected one. The other one will be calculated. Available only if the gas is selected fluid

V liq

liquid phase velocity

D liq

liquid phase pipeline diameter

Select value to input. You should enter selected one. The other one will be calculated. Available only if the gas is selected fluid

V gas

gas phase velocity

D gas

gas phase pipeline diameter

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