MI Boiler Operator Practice Questions - Michigan Boiler Operator License Exam

What is the primary purpose of a boiler air preheater?

To recover heat from flue gases to preheat combustion air, improving efficiency To filter particulates from the incoming combustion air To humidify the combustion air for better fuel mixing To cool the combustion air to increase its density

Correct Answer:

To recover heat from flue gases to preheat combustion air, improving efficiency

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