HEAT TRANSFER QUIZ

Use of transverse baffles in a shell and tube heat exchanger is done to increase the

Turbulence of shell side fluid

Flow velocity

All of these

Rate of heat transfer

TRUE ANSWER : ?
YOUR ANSWER : ?

With the increase of temperature, the Col-burn jH factor

Remains unchanged

May increase or decrease ; depending on temperature

Decreases

Increases

TRUE ANSWER : ?
YOUR ANSWER : ?

A black body does not __________ radiation.

Reflect

Both B & C

Absorb or emit

Refract

TRUE ANSWER : ?
YOUR ANSWER : ?

In a shell and tube heat exchanger, the shell side fluid velocity can not be changed by changing the

No. of baffles

Tube diameter

Tube pitch

Tube layout

TRUE ANSWER : ?
YOUR ANSWER : ?

Economy of an evaporator is influenced by the

Steam pressure

Feed temperature

Both B & C

Number of effect

TRUE ANSWER : ?
YOUR ANSWER : ?

For large heat transfer area requirement, shell and tube heat exchanger is preferred, because it

All of these

Is easy to operate and maintain

Occupies smaller space

Is more economical

TRUE ANSWER : ?
YOUR ANSWER : ?

In forced convection, the heat transfer depends on

Re, Pr

mainly Gr

Re, Gr

none of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following accessories is provided in the vapor line of an evaporator for removing the entrained liquid?

Catchall

Vent

Baffle

Bleed point

TRUE ANSWER : ?
YOUR ANSWER : ?

In a shell and tube heat exchanger, putting a longitudinal baffle across the shell, forces the shell side fluid to pass __________ through the heat exchanger.

Twice

Once

Thrice

Four times

TRUE ANSWER : ?
YOUR ANSWER : ?

Which type of heat exchanger is preferred for heavy heat loads ?

Plate fine

Double pipe

Series and parallel set of shell and tube

None of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

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