within the range of u2212 20 k to 40 k and the mass flow fluctuates within the range of 6 to 8 exceptionally up to 12 taking into account existing design margins the exhaust for discharging some of the mass flow the feed of coolant and the auxiliary combustion are to be designed in accordance with these changes in the parameters the exhaust 5 for discharging some of the hot gas mass flow is preferably to be arranged at a location where as high a pressure as possible prevails in the connecting element 2 in this way the hot gas can possibly be discharged without additional delivery devices on the other hand the feed of the coolant and of the additive is preferably to be arranged at a location where as high a vacuum as possible prevails in the connecting element 2 in this way the coolant and the additive can possibly be fed without additional delivery devices to illustrate a bypass from which the present invention with an exhaust is differentiated a typical plant according to the prior art having a bypass is shown in fig3 here there is a gas turbine plant 1 downstream of which is a diffuser 12 and then a duct 11 a bypass 9 is now simply arranged on this duct 11 and can be switched on or off.