What is the primary function of a deaerator in a boiler system?

Prepare for the Maryland Boiler License Test. Study with flashcards and multiple choice questions that include hints and explanations. Ace your exam!

The primary function of a deaerator in a boiler system is to heat the feedwater to the temperature of saturated steam. This process is essential because it allows the feedwater to better match the temperature of the steam within the boiler, minimizing thermal shock and enhancing the overall efficiency of the steam generation process.

By heating the feedwater, the deaerator also plays an integral role in oxygen removal from the water. Oxygen can lead to corrosion in boiler systems, so by ensuring that the feedwater is at a proper temperature and has had dissolved gases removed, the deaerator helps to maintain the integrity and longevity of the boiler equipment.

In contrast to the other choices, the deaerator is not involved in cooling down boiler water or regulating steam pressure. It does not directly remove impurities from steam, as its primary function is focused on preparing the feedwater before it enters the boiler system. The removal of impurities would typically take place in other system components such as filters or separators.

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