Heat Exchanger & its Applications

Which of the following is NOT a type of heat exchanger?

• Recuperator

• Regenerator

• Mixer

• none of the above

The energy transfer between the hot fluid and cold fluids is brought about by their complete physical mixing in

• Direct contact heat exchanger

• Recuperators

• Regenerators

• Boilers

In how many categories heat exchangers are classified on the basis of direction of flow of fluids?

• 4

• 3

• 2

• 1

In how many categories heat exchangers are classified on the basis of physical state of heat exchanging fluids?

• 1

• 2

• 3

• 4

The value of radiation coefficient or the Stefan-Boltzmann constant is

• 5.67 * 10 ^-5 W/m² K⁴

• 5.67 * 10 ^-6 W/m² K⁴

• 5.67 * 10 ^-7 W/m² K⁴

• 5.67 * 10 ^-8 W/m² K⁴

Shell and Tube Heat Exchangers are not commonly used in industries because of their inability to handle high pressure and temperature.

• True

• False

What can we infer from the name 2-4 Shell and Tube Heat Exchanger?

• Partition of the Shell into two and four passes of the tube

• One Shell and Four pass of the tube

• Partition of the Shell into three four passes of the tube

• Partition of the Shell into two three passes of the tube

What is the purpose of using baffles in shell-and-tube heat exchangers?

• to enhance heat transfer

• to maintain uniform spacing between tubes

• both

• none

Usually, the flow arrangement of two fluids in compact heat exchangers is

• parallel flow

• counter flow

• cross flow

• none of the above

Which is the major mean of heat transfer in a Double Pipe heat exchanger?

• Convection

• Conduction

• Radiation

• Combined Convection and Conduction