Mixing Fluids
The final mass and temperature when mixing fluids are calculated below.
Final Mass of Mixed Fluids
m = m1 + m2+ ... + m n (1)
where
m = final mass (kg, lb)
m 1..n = mass of substances
Final Temperature of Mixed Fluids
t = (m1 c1 t1 + m2c2t2+ ... + m n c n t n ) / (m1 c1 + m2c2+ ... + m n c n ) (2)
where
t = final temperature ( oC, oF)
c 1..n = specific heat of substances (kJ/kg oC, Btu/lb oF)
t 1..n = temperatures of substances ( oC, oF)
Example - Mixing Water with Different Temperatures
10 kg of water with temperature 10 oC is mixed with 2 kg water with temperature 100 oC . Specific heat of water is 4.2 kJ/kg oC .
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. oC ) (10 oC ) + (2 kg) (4.2 kJ/kg. oC ) (100 oC ) ) / ( (10 kg) (4.2 kJ/kg. oC ) + (2 kg) (4.2 kJ/kg. oC ) )
= 25 oC
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 oC, Btu/lb oF)
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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