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custom fluid properties

K factor for fittings, resistance coefficient

compressible isothermal flow

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Calculation setup

LPG components ratio

Liquid phase flow

Gas phase flow

Mass flow rate and heat power

LPG gas phase properties

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- 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

- 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=0
^{0}C - M -molar mass
- Calculated molar mass for the selected ratio of propane and butane in the LPG mixture

- 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