Besides reclaiming heat, what is another key function of condensate return systems?

• A. Increasing boiler pressure.
• B. Maintaining water balance in the feedwater system.
• C. Filtering impurities from water.
• D. Cooling the condensate to near ambient temperature.

Answer: (B)

Condensate return systems do more than reclaim heat from used steam. Their important second function is keeping the feedwater system properly balanced. By returning condensate back into the boiler feedwater, you maintain the correct water inventory, which reduces the amount of makeup water you need to add. That keeps boiler levels and pressures steadier, minimizes thermal and chemical fluctuations, and generally improves overall cycle efficiency because you’re reusing hot water that’s closer to boiler conditions rather than drying it out with extra makeup water.

Increasing boiler pressure isn’t something the condensate return line directly controls; it’s set by boiler operation and control systems. Filtering impurities is typically handled by water treatment and separate filtration steps, not by returning condensate itself. Cooling the condensate to near ambient would waste the energy captured in the condensate and reduce efficiency, which is the opposite of why condensate is returned in the first place.