Primary water and cold gas temperature control

Primary water and cold gas temperature are two important parameters to cool the stator windings and the rotor of the generator respectively. The primary water flows through the hollow stator windings of the generator thereby absorbing the heat from the stator windings. This primary water is then cooled using the DM water through the plate heat exchangers which are used for cooling the Primary water. The cooling of the primary water depends upon the primary water temperature control valve whose setpoint is some constant value above the setpoint of the cold gas temperature control valve


The cold gas or the hydrogen gas is used to cool the generator rotor the hydrogen gas is cooled again with the DM water from various coolers. The cold gas temperature control valve set point is some constant plus the temperature of the cold gas.