The function of the low-pressure heater is to use the steam that has done some work in the steam turbine to pump it into the heater to heat the feed water, increase the temperature of the water, reduce the amount of steam discharged by the steam turbine to the condenser, reduce the energy loss, and improve the cycle efficiency of the thermal system.Vertical tube sheet heaters are widely used in structure.The heating surface of the heater is generally composed of straight tube bundles or U-shaped tube bundles made of brass tubes or seamless steel tubes.The heated water enters one side of the separated water chamber from the upper water inlet pipe, and then flows into the U-shaped tube bundle. The U-shaped tube absorbs the heat of the heating steam in the steam space of the heater, transfers the heat from the tube wall to the flowing water in the tube, and the heated water flows out through the outlet water chamber of the heater.
