What is water injection system in gas turbine?

Water or steam injection is a technology that has been demonstrated to effectively suppress NOx emissions from gas turbines. The effect of steam and water injection is to increase the thermal mass by dilution and thereby reduce peak temperatures in the flame zone.

Why water is injected in a gas turbine?

The injection of coolant into the combustion chamber inlet increases the mass flow rate through the turbine. This cools the air passing into the combustion zone. The fuel control system senses the water pressure, which will automatically reset the engine speed governer to give a higher maximum engine speed.

Is water ever injected into a jet engine?

In jet engines it increases engine thrust at low speeds and at takeoff. Water injection was used historically to increase the power output of military aviation engines for short durations, such as dogfights or takeoff. However it has also been used in motor sports and notably in drag racing.

How does water injection affect a turbine engine?

Water Injection. The maximum power a turbine engine can output depends largely upon the density or weight of the flow of the gases through the engine. Therefore, when the atmospheric pressure decreases or ambient air temperature increases, there is a loss in thrust. The power output can be boosted or restored by cooling…

How is water used in a gas turbine?

A typical technology of power and emissions control in industry uses water or steam injection into the combustion chamber of a gas turbine. Significant advantages of this method are a positive influence on the flame temperature as well as reduced emissions.

How is power augmentation of gas turbines used?

Power Augmentation of Gas Turbines using Water or Steam Injection A typical technology of power and emissions control in industry uses water or steam injection into the combustion chamber of a gas turbine. Significant advantages of this method are a positive influence on the flame temperature as well as reduced emissions.

Which is an example of a steam injected gas turbine?

Significant advantages of this method are a positive influence on the flame temperature as well as reduced emissions. Applied examples of this technology are the STIG (STeam Injected Gas turbine) cycle, the HAT (Humidified Air Turbine) cycle and the Cheng cycle.