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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) Shell and tube
B) Plate
C) Finned tube
D) Double-pipe
  • 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) Valves
B) Bearings
C) Fins
D) Gaskets
  • 4. What is the function of the header in a shell and tube heat exchanger?
A) Reduce pressure
B) Distribute the fluid evenly to the tubes
C) Control temperature
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) Increase heat transfer
C) Regulate pressure
D) Remove air from the system
  • 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) Remove moisture from the system
D) Cool the refrigerant
  • 7. What helps maintain efficient heat transfer by preventing fouling in a heat exchanger?
A) Regular cleaning and maintenance
B) Increased pressure
C) Higher flow rate
D) Less insulation
  • 8. What is meant by the term 'heat exchanger fouling'?
A) Decrease in fluid velocity
B) Expansion of tube material
C) Increase in heat transfer rate
D) Accumulation of deposits on heat transfer surfaces
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