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