Question 280Steam Plants - 1st Asst/Chief
70% to passIn a regenerative air heater, air is bypassed around the heater while _______________.
Aoperating at low steaming rates
Bgiving a surface blow
Cblowing tubes
Dcrossing over forced draft fans
AI Explanation
A) operating at low steaming rates is the correct answer. In a regenerative air heater, air is bypassed around the heater when the boiler is operating at low steaming rates. This is done to maintain the proper air-to-fuel ratio and ensure efficient combustion when the boiler is not running at full capacity. The other answer choices are not directly related to the operation of a regenerative air heater.
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