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