Minnesota Special Engineer Boiler License Practice Exam

Which type of boiler can be made larger in size?

1. Fire tube

2. Water tube

3. Cast iron sectional

4. Electrical

The correct answer is: Cast iron sectional

The correct answer is the cast iron sectional boiler. This type of boiler is designed in sections that can be individually added or removed, allowing for flexibility in size and capacity. The modular design of cast iron sectional boilers makes it possible to increase the overall size by simply adding more sections, accommodating larger heating requirements without significant modifications to the existing system. This capability is particularly beneficial in applications where space may be a constraint, or when future expansion of heating demands is anticipated. In contrast, fire tube and water tube boilers generally have fixed designs and sizes that limit their capacity adjustments after manufacturing. Electric boilers also tend to be standardized in size and do not offer the same modular expansion ability as cast iron sectional boilers.