Class 5 Boiler Practice Exam 2025 - Free Boiler Certification Practice Questions and Study Guide

A condenser plays a crucial role in a boiler system by cooling and condensing steam back into water. This process is essential for maintaining system efficiency and ensuring a continuous cycle of water and steam within the system. When steam is produced in the boiler, it is often used for heating purposes in various applications. Once this steam has done its work, it needs to be returned to the boiler for reuse, and that's where the condenser comes in.

By cooling the steam, the condenser transforms it back into liquid water, allowing for the recovery of heat energy. This recovered condensate can then be pumped back into the boiler to be reheated and converted back into steam, thereby enhancing the overall efficiency of the system. Furthermore, this cycle minimizes water waste and reduces the need for fresh feedwater, which can lead to cost savings and a lower environmental impact as well.

The other functions listed, such as generating steam, removing impurities, and adjusting fuel use, do not accurately describe the primary function of a condenser within a boiler system. Generating steam is done by the boiler itself, water treatment is typically handled through separate purification processes, and fuel adjustments are managed by the combustion control systems, not the condenser.