A system and a method for mixing a recirculated exhaust gas stream with air to obtain a gas mixture to be fed to a gas turbine

A method for mixing a recirculated exhaust gas stream with air to obtain a gas mixture to be fed to a gas turbine, the flow ratio of the recirculated exhaust gas stream being a fraction of the flow ratio of the gas mixture to be fed to the gas turbine, the method comprising the following steps:

• providing a system comprising a mixing chamber, the mixing chamber being provided with:
• one recirculated exhaust gas stream inlet opening, on a first side of the mixing chamber, at least one fresh air stream inlet opening, on a second side of the mixing chamber, said second side being intersecting to said first side, and a mixed gas stream outlet opening, on a third side of the mixing chamber, said third side being opposed to said first side, the recirculated exhaust gas stream inlet opening being in line with the mixed gas stream outlet opening and configured to define a linear path of the recirculated exhaust gas stream flowing inside the mixing chamber from the recirculated exhaust gas stream inlet opening to the mixed gas stream outlet opening, wherein the recirculated exhaust gas stream inlet opening defines a recirculated exhaust gas stream inlet opening cross section and the mixed gas stream outlet opening defines a mixed gas stream outlet opening cross section, the recirculated exhaust gas stream inlet opening cross section being dimensioned as a fraction of the mixed gas stream outlet opening cross section, said fraction of the mixed gas stream outlet opening cross section being equal to from 70% to 130% the fraction of the flow ratio of the gas mixture to be fed to the gas turbine which is composed of recirculated exhaust gas.