In large scale applications, ultrasupercritical Rankine cycles employ up to 10 feedwater heaters, five on the high pressure side and five on the low pressure side, including the deaerator, helping in the increment of the temperature at the inlet of the boiler up to 300°C, allowing a significant regenerative air preheating, thus reducing the fuel consumption.
In large-scale systems, ultrasupercritical Rankine cycles employ a multitude of feedwater heaters, with five on each high- and low-pressure side, including the deaerator. This setup enables significant temperature increases at the boiler's inlet to 300°C, resulting in substantial regenerative air preheating and reduced fuel requirements.