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THE BOILERS AND PRESSURE VESSELS ORDINANCE, 2002 QUESTION #4048
Question 1
'Infiltration' (Air In-leakage) in a boiler:
  • Improves efficiency
  • Reduces efficiency by cooling the flue gases and loading the fans✔️
  • Is not a problem
  • Makes the fire hotter
Correct Answer Explanation
Uncontrolled air entry through cracks in the setting is a major source of heat loss.