Kentucky Boiler Practice Exam

What type of boiler circulates hot water for heating purposes?

1. Heating Boiler

2. Hot Water Supply Boiler

3. Hot Water Storage Tank

4. Heat Recovery Boiler

The correct answer is: Heating Boiler

The type of boiler that circulates hot water for heating purposes is a heating boiler. Heating boilers are specifically designed to provide space heating through the efficient circulation of hot water to radiators, baseboards, or underfloor systems. They operate by heating water and then distributing it throughout a building to maintain a comfortable temperature. This type of boiler typically operates at lower pressures compared to other boiler types, providing the necessary thermal energy for heating applications without generating steam. The focus on hot water circulation makes heating boilers essential for both residential and commercial heating systems. The other options refer to different boiler applications or systems. For example, a hot water supply boiler generates hot water primarily for domestic use and is not primarily intended for providing heating to living spaces. A hot water storage tank, while involved in maintaining a supply of hot water, does not actually circulate water for heating; it stores water that can be heated up. A heat recovery boiler is utilized for capturing and reusing waste heat from industrial processes, rather than directly circulating hot water for heating purposes. Thus, the specificity of heating boilers in their function aligns perfectly with the question asked.