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Heat exchangers - Test
Contributed by: Brennan
  • 1. Which type of heat exchanger uses a set of parallel tubes to transfer heat?
A) Plate
B) Shell and tube
C) Finned tube
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) Bearings
B) Fins
C) Valves
D) Gaskets
  • 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) Control flow rate through the exchanger
B) Remove air from the system
C) Regulate pressure
D) Increase heat transfer
  • 6. What is the function of the expansion valve in a refrigeration system?
A) Remove moisture from the system
B) Increase the pressure of the refrigerant
C) Cool the refrigerant
D) Regulate the flow of refrigerant into the evaporator
  • 7. What helps maintain efficient heat transfer by preventing fouling in a heat exchanger?
A) Less insulation
B) Increased pressure
C) Higher flow rate
D) Regular cleaning and maintenance
  • 8. What is meant by the term 'heat exchanger fouling'?
A) Increase in heat transfer rate
B) Decrease in fluid velocity
C) Expansion of tube material
D) Accumulation of deposits on heat transfer surfaces
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