What describes condensate return in a boiler system?

• A. The return of condensate to the boiler as feedwater, which saves energy, reduces makeup water, and recovers heat.
• B. The venting of non-condensable gases from the boiler.
• C. The process of adding makeup water to maintain level.
• D. The procedure of draining the boiler to remove sludge.

Answer: (A)

Returning condensate is about sending the hot water that results when steam cools and condenses back into the boiler as feedwater. This is efficient because that condensate still carries a lot of the heat the boiler originally supplied, so reusing it reduces the fuel needed to reheat water to steam. It also cuts down on makeup water because you’re recirculating water that would otherwise be lost with the steam, and condensate is relatively clean, which lowers the amount of treatment required. In short, condensate return recovers heat, saves energy, and reduces water and treatment costs.

Venting non-condensable gases, adding makeup water, and draining sludge describe different boiler operations and are not what condensate return refers to.