What is the normal supply pressure of the compressed air used for starting the engine in a microturbine?

The normal supply pressure of the compressed air used for starting the engine in a microturbine is indeed typically around 2000 kPa (290.1 psi). This pressure level is suitable as it provides the necessary force to start the turbine efficiently. Microturbines require a significant amount of energy to initiate rotation and overcome inertia. The compressed air acts as a medium to drive the initial phase of engine operation, and the chosen pressure ensures that the starting mechanism operates effectively without hampering the overall system performance.

In a microturbine setup, using compressed air at too low a pressure may result in inadequate starting torque or slow acceleration, while excessively high pressures can pose risks of component failure or inefficient operation. The selection of 2000 kPa strikes a balance, ensuring reliable starting while maintaining safety and performance standards for the microturbine system.