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Chemical Engineering - Heat Transfer

Exercise : Heat Transfer - Section 6
1.
Choose the correct equation.
Nu = (Re) (Pr) (Gz)
Nu = (Re) (Pr) (St)
Nu = (Re)(Pr)
Nu = (Pr)(St)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
In a forward feed multiple effect evaporator unit
viscosity of liquid is highest in first effect.
transfer from effect to effect is done by pumps.
no pump is required to withdraw the product from the last effect.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is
linear
hyperbolic
parabolic
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
For heat flow through very thick walled cylinder, use____mean radius.
arithmetic
logarithmic
geometric
either (a) or (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
Indirect contact heat exchangers are preferred over direct contact heat exchangers, because
heat transfer co-efficient are high.
there is no risk of contamination.
there is no mist formation.
cost of equipment is lower.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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