Generator exhaust shaft low pressure discharge

Why do generator exhaust systems need to be properly designed?

Generator exhaust systems need to be properly designed to ensure correct engine performance and safe operation. System design has become more complex with the desire to keep emissions low, along with the desire to utilize the heat energy in the exhaust gas.

How does a gen set exhaust system work?

A gen set exhaust system must collect gases from engine cylinders and discharge them as quickly and silently as possible. It must minimize back pressure, which can cause horsepower losses and temperature increases that can shorten the engine’s life. Several factors impact the exhaust system performance.

Who designs and installs a generator exhaust system?

The proper design and functionality of a generator exhaust system falls on the responsibility of the engineering firm of record. If a field fabricated system is being utilized, the design and installation of the system must be a collaboration between the engineering firm and the installing contractor.

How do generator exhaust systems work?

Units located inside a building often require the exhaust to be routed up through the roof, up the side of the building, or to a free-standing stack. Generator exhaust systems for years have been fabricated from sections of schedule 40 carbon steel pipe that are field welded, then insulated to reduce surface temperatures.

Can a generator set have all exhaust system combinations?

Note: Some generator set models may not offer all exhaust system combinations. Use the illustrations on the following pages to select the available silencer type and exhaust system configuration best suited for your application. Consult with your authorized distributor/dealer for silencer and component kit numbers and for silencer dimensions.

What is a low pressure gas turbine rotor?

The low-pressure or power turbine rotor is mechani-cally separate from the high-pressure turbine and compressor rotor. The low pressure rotor is said to be aerodynamically coupled. This unique feature allows the power turbine to be operated at a range of speeds and makes two-shaft gas turbines ideally suited for variable-speed applications.