Heat Exchangers and TDH

Some examples of heat exchanger are:

(i) Condensers and evaporators in refrigeration units

(ii) Evaporator of an ice plant and milk chiller of a pasteurizing plant

(iii) Automobile radiators and oil coolers of heat engines

• i only

• ii and iii

• i and ii

• i, ii, and iii

In a shell and tube heat exchanger, as the number of tube increases, the __________ increases.

How many passes are there in the given heat exchanger?

What type of heat exchanger is this?

• Countercurrent

• Co-current

• Incurrent

• Concurrent

Which is the major mechanism of heat transfer in a double pipe heat exchanger?

• Convection

• Conduction

• Radiation

• Conduction and Convection

• All of the above

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

• True

• False

The following statements about baffles in a shell and tube heat exchanger are correct, except:

• Baffles provide mechanical support to the tubes

• Baffles decrease turbulence

• Segmental baffles are the most common type

Recognize the given shell and tube heat exchanger:

• 1-2 shell and tube

• 2-3 shell and tube

• 2-4 shell and tube

• 3-6 shell and tube

Which is being installed to prevent overpressure in a heat exchanger?

• Relief valve

• Vacuum breaker

• Pressure valve

• Flame arrestor

What could be installed to prevent water hammering?