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