Extended lifetime of exhaust systems with minimized risk of leakages
Exhaust systems guides the exhaust from the gas turbine into the atmosphere. It is mandatory to use exhaust systems behind the gas turbines as the exhaust flue gases can reach temperatures between 400 and 650 C.
Exhaust ducts are under enormous strain from turbulence and pressure fluctuations from the gas turbine. Start-stops causes additional thermal stress on the exhaust system. This can lead to cracks, damages on ducts walls, faulty insulation and unwanted high surface temperature. In some cases, internal parts in the ducting can loosen and blow out of the duct exit nozzle, causing dangerous situations due to falling objects.
There are also several health risks, such as noise heat and exhaust emissions behind the gas turbines, which can be minimized.
The Halvorsen Exhaust Ducts for extended system life can handle 800 transient operations. It comes with patented low stress flanges which prevents crack development in rectangular duct section corners.
Our solutions also leads to improved availability and reliability of the total gas turbine system, with less downtime and færre helseskader. Our senior personnel has extensive experience with the largest and most used offshore gas turbines.