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Heat exchangers
Contributed by: Brennan
  • 1. Which type of heat exchanger uses a set of parallel tubes to transfer heat?
A) Finned tube
B) Shell and tube
C) Plate
D) Double-pipe
  • 2. Which material is commonly used for the construction of heat exchanger tubes?
A) Aluminum
B) Plastic
C) Copper
D) Steel
  • 3. What is used to enhance heat transfer in a heat exchanger by increasing surface area?
A) Valves
B) Gaskets
C) Fins
D) Bearings
  • 4. What helps maintain efficient heat transfer by preventing fouling in a heat exchanger?
A) Less insulation
B) Higher flow rate
C) Regular cleaning and maintenance
D) Increased pressure
  • 5. What is the function of the header in a shell and tube heat exchanger?
A) Distribute the fluid evenly to the tubes
B) Reduce pressure
C) Control temperature
D) Separate hot and cold fluids
  • 6. What is meant by the term 'heat exchanger fouling'?
A) Expansion of tube material
B) Decrease in fluid velocity
C) Accumulation of deposits on heat transfer surfaces
D) Increase in heat transfer rate
  • 7. What is the purpose of the bypass valve in a heat exchanger system?
A) Control flow rate through the exchanger
B) Regulate pressure
C) Increase heat transfer
D) Remove air from the system
  • 8. What is the function of the expansion valve in a refrigeration system?
A) Remove moisture from the system
B) Regulate the flow of refrigerant into the evaporator
C) Cool the refrigerant
D) Increase the pressure of the refrigerant
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