Chemical Engineering - Heat Transfer - Discussion
Discussion Forum : Heat Transfer - Section 1 (Q.No. 32)
32.
With the increase of temperature, the Col-burn jH factor
Discussion:
7 comments Page 1 of 1.
Mongam Damodhar Rao said:
11 months ago
JH = f/2.
Here f is inversely prop to the density of fluid, density is inversely prop to temperature. So, f is directly prop to temperature. Finally, f, JH is directly prop to temperature.
Here f is inversely prop to the density of fluid, density is inversely prop to temperature. So, f is directly prop to temperature. Finally, f, JH is directly prop to temperature.
Nithin said:
4 years ago
Then what is the correct option? Please explain me.
Jishnu said:
7 years ago
JH directly proportional to convective heat transfer coefficient and viscosity^(1/3).
And it is inversely proportional to density and thermal conductivity so we can not say whether it will decrease or increase with temperature, it will depend on fluid and its properties.
And it is inversely proportional to density and thermal conductivity so we can not say whether it will decrease or increase with temperature, it will depend on fluid and its properties.
Arindam said:
7 years ago
@Krrish.
Col-burn jH means Chilton and Colburn analogy, which is represented as JH= f/2.
Col-burn jH means Chilton and Colburn analogy, which is represented as JH= f/2.
Krrish said:
8 years ago
What is Col-burn jH? Explain.
Prasoon said:
9 years ago
Viscosity decreases with temperature and since Jh is inversely proportional to viscosity^ (1/3) , it increases.
Rohit said:
1 decade ago
jH and temperature are directly prepositional.
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