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Spherical Tank Or Pressure Vessel Volume

Calculate the fluid volume and mass for a full or part full spherical tanks and pressure vessels.

Fluid volume and mass can be calculated for liquid tanks (the gas volume is ignored), gas tanks (full tank only), and mixed gas and liquid tanks. For part full tanks the fluid level is measured from the inside base of the tank.

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CALCULATOR : Spherical Tank Or Pressure Vessel Volume Liquid [FREE]   ±

Calculate the volume and mass of liquid in a full or partially full spherical tank or pressure vessel.

The tank inside diameter can be defined by either the outside diameter and wall thickness, the circumference and wall thickness, or user defined inside diameter. For part full tanks, the volume is calculated from the liquid surface height measured from the inside base of the tank.

Tool Input

  • idtype : Tank Diameter Type
    • ODu : User Defined Outside Diameter
    • IDu : User Defined Inside Diameter
    • OCu : User Defined Outside Circumference
    • tnu : User Defined Wall Thickness
  • voltype : Volume Type
    • Zsu : User Defined Liquid Surface Height
  • ρl : Liquid Density

Tool Output

  • ID : Tank Inside Diameter
  • Ml : Liquid Mass
  • Vl : Liquid Volume
  • Vt : Total Volume
CALCULATOR : Spherical Tank Or Pressure Vessel Volume Gas [FREE]   ±

Calculate the volume, mass and moles of gas in a spherical tank or pressure vessel.

The tank inside diameter can be defined by either the outside diameter and wall thickness, the circumference and wall thickness, or user defined inside diameter.

Tool Input

  • idtype : Tank Diameter Type
    • ODu : User Defined Outside Diameter
    • IDu : User Defined Inside Diameter
    • OCu : User Defined Outside Circumference
    • tnu : User Defined Wall Thickness
  • fluidtype : Gas Type
    • SGu : User Defined Gas Specific Gravity
  • zfactype : Compressibility Factor Type
    • Zu : User Defined Compressibility Factor
  • P : Pressure
  • T : Temperature

Tool Output

  • ρg : Gas Density
  • ID : Tank Inside Diameter
  • Mg : Gas Mass
  • Ng : Gas Moles
  • SG : Gas Specific Gravity
  • Vg : Gas Volume
  • Z : Gas Compressibility Factor
  • vg : Gas Mole Specific Volume
CALCULATOR : Spherical Tank Or Pressure Vessel Volume Gas And Liquid [FREE]   ±

Calculate the volume and mass and gas moles of liquid or gas in a full or partially full spherical tank or pressure vessel.

The tank inside diameter can be defined by either the outside diameter and wall thickness, the circumference and wall thickness, or user defined inside diameter. For part full tanks, the liquid volume is calculated from the liquid surface height measured from the inside base of the tank.

Tool Input

  • idtype : Tank Diameter Type
    • ODu : User Defined Outside Diameter
    • IDu : User Defined Inside Diameter
    • OCu : User Defined Outside Circumference
    • tnu : User Defined Wall Thickness
  • fluidtype : Gas Type
    • SGu : User Defined Gas Specific Gravity
  • zfactype : Compressibility Factor Type
    • Zu : User Defined Compressibility Factor
  • voltype : Volume Type
    • Zsu : User Defined Liquid Surface Height
  • P : Pressure
  • T : Temperature
  • ρl : Liquid Density

Tool Output

  • ρg : Gas Density
  • ID : Tank Inside Diameter
  • Mg : Gas Mass
  • Ml : Liquid Mass
  • Mt : Total Mass
  • Ng : Gas Moles
  • SG : Gas Specific Gravity
  • Vg : Gas Volume
  • Vl : Liquid Volume
  • Vt : Total Volume
  • Z : Gas Compressibility Factor
  • vg : Gas Mole Specific Volume
CALCULATOR : Gas Compressibility Factor From Cubic Equation [FREE]   ±

Calculate gas compressibility factor and density from the cubic equation of state.

The gas molar volume, compressibility factor Z and density can be calculoated from from the fluid pressure, temperature and critical point constants using either the Peng Robinson, Soave, Redlich Kwong, or van der Waals equation of state (EOS). The compressibility factor calculation is valid for gas phase only. Use the Result Plot option to plot compressibility factor versus pressure and temperature, compressibility factor versus pressure and equation of state type, or compressibility factor versus temperature and equation of state type.

Tool Input

  • fluidtype : Fluid Type
    • SGu : User Defined Gas Specific Gravity
    • ωu : User Defined Acentric Factor
    • Pcu : User Defined Critical Pressure
    • Tcu : User Defined Critical Temperature
  • eostype : Equation Of State
    • Zu : User Defined Compressibility Factor
  • P : Fluid Pressure
  • T : Fluid Temperature

Tool Output

  • ρ : Fluid Density
  • ω : Accentric Factor
  • Pc : Critical Point Pressure
  • Pr : Reduced Pressure
  • SG : Gas Specific Gravity Relative To Air
  • Tc : Critical Point Temperature
  • Tr : Reduced Temperature
  • Vm : Molar Volume
  • Z : Compressibility Factor
  • cvg : Convergence Check
  • mw : Fluid Molar Mass
CALCULATOR : Gas Density From Temperature Pressure And Specific Gravity [FREE]   ±

Calculate gas density from temperature pressure and specific gravity from temperature, pressure, specific gravity and compressibility factor.

Gas molar mass is approximately equal to the molar mass of dry air times the gas specific gravity at standard conditions (for most gases the compressibility factor Z is approximately equal to 1 at standard conditions). The molar mass of dry air is taken as 28.964 kg/kg-mole. For gas mixtures, gas specific gravity is easier to measure than the molar mass.

Tool Input

  • fluidtype : Gas Type
    • SGu : User Defined Gas Specific Gravity
  • Z : Gas Compressibility Factor
  • P : Gas Pressure
  • T : Gas Temperature

Tool Output

  • ρ : Gas Density
  • M : Gas Molar Mass
  • R : Gas Constant
  • SG : Gas Specific Gravity
  • vg : Gas Molar Volume (At T P)
CALCULATOR : Liquid Density From Specific Gravity Degrees API Twaddell And Baume [FREE]   ±

Calculate single phase liquid density from specific gravity, degrees Baume, degrees Twaddell, or degrees API.

For liquids lighter than or equal to water the density can be defined as degrees API, or degrees Baume (Be-). For liquids heavier than water the density can be defined by degrees Baume (Be+), or degrees Twaddell.

Tool Input

  • sgtype : Density Type
    • SGu : User Defined Specific Gravity
    • Be+u : User Defined Degrees Baume SG > 1
    • Be-u : User Defined Degrees Baume SG <= 1
    • Twu : User Defined Degrees Twaddell SG > 1
    • APIu : User Defined Degrees API SG <= 1
    • ρu : User Defined Liquid Density

Tool Output

  • ρ : Fluid Density
  • API : Degrees API SG ≤ 1
  • Be+ : Degrees Baume SG > 1
  • Be- : Degrees Baume SG ≤ 1
  • SG : Specific Gravity
  • Tw : Degrees Twaddell SG > 1
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