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