Which components are typically found in a hot water heating system?

A hot water heating system is designed to distribute heated water throughout a building for space heating, and it typically includes specific components that facilitate this process. The components identified in the correct choice are essential for the operation of such systems.

The boiler is the core component that heats water using fuels or electricity, producing hot water that is then circulated through the system. An expansion tank is important because it accommodates the expansion of water as it heats, preventing excessive pressure within the system. Pumps are utilized to circulate the heated water through the distribution piping, which delivers the hot water to radiators or other types of heat emitters in various spaces within the building.

In contrast, the other options describe systems used for different purposes. For instance, the configuration involving a turbine and heat exchangers generally pertains to power generation or larger heating applications, which do not directly fit the definition of a hot water system. The third option describes components of a refrigeration cycle, critical for cooling systems rather than heating. Lastly, the fourth option lists elements associated with electrical systems, which are unrelated to hot water heating.

Understanding the specific workings and needs of hot water heating systems clarifies why the first choice is appropriate.