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 = m1 + m2 + ... + mn (1)
where
m = final mass (kg, lb)
m1..n = mass of substances
Final Temperature of Mixed Fluids
t = (m1 c1 t1 + m2 c2 t2 + ... + mn cn tn) / (m1 c1 + m2 c2 + ... + mn cn) (2)
where
t = final temperature (oC, oF)
c1..n = specific heat of substances (kJ/kgoC, Btu/lboF)
t1..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/kgoC.
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:
mass (kg, lb)
temperature (oC, oF)
specific heat (kJ/kgoC, Btu/lboF)
Fluid 2:
mass (kg, lb)
temperature (oC, oF)
specific heat (kJ/kgoC, Btu/lboF)
Mixing Fluids - Required Temperature Calculator
Calculate required temperature for one of the fluids to achieve a final mixed temperature.
Mixture
final temperature (oC, oF)
Fluid 1:
mass (kg, lb)
temperature (oC, oF)
specific heat (kJ/kgoC, Btu/lboF)
Fluid 2:
mass (kg, lb)
specific heat (kJ/kgoC, Btu/lboF)
Mixing Fluids - Required Mass Calculator
Calculate required mass for one of the fluids to achieve a final mixed temperature.
Mixture
final temperature (oC, oF)
Fluid 1:
mass (kg, lb)
temperature (oC, oF)
specific heat (kJ/kgoC, Btu/lboF)
Fluid 2:
temperature (oC, oF)
specific heat (kJ/kgoC, Btu/lboF)
