Which components are associated with heat transfer in a steam generating unit?

In a steam generating unit, the superheater and economizer are critical components that focus on improving the efficiency and effectiveness of heat transfer processes within the system.

The superheater plays a crucial role by taking steam produced in the boiler and further raising its temperature. This increase in temperature helps to enhance the energy output of the steam when it expands in a turbine, leading to improved thermal efficiency and power generation capability.

The economizer, on the other hand, is designed to pre-heat the feedwater before it enters the boiler. By utilizing the residual heat from the flue gases, the economizer reduces the amount of energy required to heat the feedwater, thus positively impacting the overall thermal efficiency of the system. This heat recovery process is essential for maximizing heat transfer and minimizing fuel consumption.

Both the superheater and economizer are directly engaged in processes that enhance heat transfer, making option A the correct choice for components associated with heat transfer in a steam generating unit.