// Free Engineering Tool

Fluid Mixing Calculator

Calculate the resulting temperature, mass flow rate, density, specific heat and viscosity when two fluid streams are mixed, using a steady-state adiabatic energy balance across a library of common process fluids.

Calculate the resultant temperature, mass flow rate, density, specific heat and viscosity when two fluid streams are combined. Select from gases and liquids. Based on an energy balance — enthalpy of mixing is not accounted for; chemical reactions are not modelled.

Stream 1

Fluid 1

Temperature 1 (°C)

Mass Flow Rate 1

Flow Unit 1

Stream 2

Fluid 2

Temperature 2 (°C)

Mass Flow Rate 2

Flow Unit 2

Mixed Stream Properties

Energy Balance — Steady State Adiabatic Mixing

Mixed Temperature

—

°C

Mixed Mass Flow

—

kg/h

Mixed Vol. Flow

—

m³/h

Mixed Density

—

kg/m³

Mixed Cp

—

kJ/kg·K

Mixed Viscosity

—

mPa·s

Heat Duty (Stream 1)

—

Mass Fraction (Str.1)

—

    Properties at reference temperatures (typically 20°C). Verify at actual process temperature for precision engineering. Enthalpy of mixing and phase changes not modelled.
    
  

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