Mixing Fluids
Final mass and temperature when mixing fluids.
The final mass and temperature when mixing fluids are calculated below.
Final Mass of Mixed Fluids
m = m _{ 1 } + m _{ 2 } + ... + m _{ n } (1)
where
m = final mass (kg, lb)
m _{ 1..n } = mass of substances
Final Temperature of Mixed Fluids
t = (m _{ 1 } c _{ 1 } t _{ 1 } + m _{ 2 } c _{ 2 } t _{ 2 } + ... + m _{ n } c _{ n } t _{ n } ) / (m _{ 1 } c _{ 1 } + m _{ 2 } c _{ 2 } + ... + m _{ n } c _{ n } ) (2)
where
t = final temperature ( ^{ o } C, ^{ o } F)
c _{ 1..n } = specific heat of substances (kJ/kg ^{ o } C, Btu/lb ^{ o } F)
t _{ 1..n } = temperatures of substances ( ^{ o } C, ^{ o } F)
Example  Mixing Water with Different Temperatures
10 kg of water with temperature 10 ^{ o } C is mixed with 2 kg water with temperature 100 ^{ o } C . Specific heat of water is 4.2 kJ/kg ^{ o } C .
The final mass of the mixture is
m = (10 kg) + (2 kg)
= 12 kg
The final temperature of the mixture is
t = ((10 kg) (4.2 kJ/kg. ^{ o } C ) (10 ^{ o } C ) + (2 kg) (4.2 kJ/kg. ^{ o } C ) (100 ^{ o } C ) ) / ( (10 kg) (4.2 kJ/kg. ^{ o } C ) + (2 kg) (4.2 kJ/kg. ^{ o } C ) )
= 25 ^{ o } C
Mixing Fluids  Final Mass and Temperature Calculator
The calculator below can be used to calculate the final mass and temperature when mixing two fluids.
Fluid 1:
specific heat (kJ/kg ^{ o } C, Btu/lb ^{ o } F)
Fluid 2:
Mixing Fluids  Required Temperature Calculator
Calculate required temperature for one of the fluids to achieve a final mixed temperature.
Mixture
Fluid 1:
Fluid 2:
Mixing Fluids  Required Mass Calculator
Calculate required mass for one of the fluids to achieve a final mixed temperature.
Mixture
Fluid 1:
Fluid 2:
Related Topics

Fluid Mechanics
The study of fluids  liquids and gases. Involving velocity, pressure, density and temperature as functions of space and time.
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