Generator Hydrogen Cooler Design

Generator Hydrogen Cooler Design

Determination of design parameters
Calculation of heat load: According to the generator's capacity, losses and operating conditions, determine the amount of heat that needs to be taken away by the cooler. Generally speaking, the losses of the generator include copper loss, iron loss, etc. These losses will be converted into heat, which needs to be emitted through the hydrogen cooler. For example, for a large turbine generator, the heat load may vary from tens of megawatts to hundreds of megawatts.
Hydrogen parameters: Specify the flow, pressure, temperature and other parameters of the hydrogen gas. Usually, the pressure of hydrogen in the generator is around 0.3 - 0.5MPa, the inlet temperature of hydrogen is generally 40 - 50℃, and the outlet temperature is not more than 65℃. Hydrogen flow rate is determined according to the capacity of the generator and cooling requirements, generally between thousands of cubic meters per hour to tens of thousands of cubic meters per hour.
Cooling medium parameters: If water is used as the cooling medium, the flow rate, pressure and temperature of the water should be determined. The inlet temperature of the cooling water is generally 25 - 35 ℃, the outlet temperature does not exceed 45 ℃, the pressure of the water according to the system requirements is generally between 0.2 - 0.5MPa.