Minnesota Boiler License Practice Exam

Comparing hot water boilers to steam boilers, which auxiliaries are eliminated?

1. Steam traps, condensate tanks, D.A. tanks

2. Both systems need the same auxiliaries

3. Strainers and reciprocating pumps

4. Chemical feed systems

The correct answer is: Steam traps, condensate tanks, D.A. tanks

Hot water boilers and steam boilers operate under different principles, which leads to a distinction in their auxiliary systems. In a steam boiler system, steam traps, condensate tanks, and deaerating (D.A.) tanks are essential components that facilitate the removal of condensate and air from the system, ensuring efficient operation and preventing damage. Steam traps are essential for removing condensate from the steam lines while preventing steam from escaping. Condensate tanks are used to collect this water, whereas D.A. tanks help in removing dissolved gases to improve feedwater quality. Because hot water boilers don't generate steam and primarily circulate heated water, these components are not necessary. Thus, choosing the correct option indicates a fundamental understanding of how the two types of boilers function differently and what their respective requirements are for efficient operation. The omission of steam traps, condensate tanks, and D.A. tanks in hot water boilers highlights the differences in their design and operational needs compared to steam boilers.