Which model could represent a neutral atom of boron?
2 answers:
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Answer:
The convection coefficient is
Solution:
Mass flow rate,
Inner diameter of the tube, d = 0.014 m
Fluid density,
Specific Heat, C = 3845 J/K
Thermal Conductivity, K = 0.74
Prandtl Number,
Heat flux,
Viscosity,
Now,
To calculate the convection heat coefficient, h:
Determine the cross sectional area of the circular tube:
Determine the velocity of the fluid inside the tube by mass flow rate:
v = 2.624 m/s
Determine the Reynold's Number, :
Thus it is clear that > 10,000 hence flow is turbulent.
Now,
Determine the Nusselt Number:
Also,
where
h = convection coefficient
Now,