Question 106Steam Plants - QMED

The correct answer is C) temperature differential between the steam and feed water. The rate of heat transfer in a feed water heater is most greatly affected by the temperature differential between the steam and the feed water. This is because heat transfer is driven by the temperature difference, with a greater temperature difference resulting in a higher rate of heat transfer. The other factors, such as pump speed, water density, and pH, while important, do not have as significant an impact on the overall heat transfer rate in the feed water heater.