Steam Boilers, Engines, Nozzles and Turbines

When the circulation of water, in a boiler, is by convection currents which are set up during the heating of water, then the boiler is known as_____.

  • A. Internally fired boiler
  • B. Externally fired boiler
  • C. Natural circulation boiler
  • D. Forced circulation boiler
Answer: Option C.

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