Low Pressure Feedwater Heater Tube Assemblies During Hydrotest

A Feedwater Heater Assembly Awaiting Inspection

Feedwater Heaters

Regenerative heating of feedwater is essential to enhancing the efficiency of the power cycle. The feedwater is heated to the maximum permissible extent in a feedwater heater using controlled or uncontrolled extraction from the steam turbine.

The Fossil Power Division provides high and low pressure feedwater heaters to the power industry for steam turbine applications ranging from 10 MW to 500 MW.

The heaters can be horizontal, vertical, channel up, channel down, one zone, two zone, three zone, duplex, cup forging with bolt cover, pressure seal, hemi-head configurations or a combination thereof.

The desuperheating zone of high pressure feedwater heaters is equipped with stainless steel Non-Segmental Baffles to promote longitudinal flow.

Steam flow in the longitudinal direction eliminates flow induced vibration, reduces pressure drop, and enhances the performance and the longevity of the heater.

The subcooling zones of low pressure feedwater heaters with large drains are also equipped with stainless steel Non-Segmental Baffles.

Longitudinal condensate flow reduces the shell-side pressure drop, prevents flashing and eliminates flow-induced vibration.

Proprietary and state-of-the-art computer programs are used to perform the thermal, hydraulic, and mechanical design of each feedwater heater and evaluate the performance at off-design conditions.

All heaters are designed in accordance with HEI, TEMA, and ASME Section VIII Code, as applicable.