A common application for a Waste Heat Generator (WHG) is in a combined-cycle power station, where hot exhaust from a gas turbine is fed to a WHG to generate steam which in turn drives a steam turbine. This combination produces electricity more efficiently than either the gas turbine or steam turbine alone. Another application for a WHG is in diesel engine combined cycle power plants, where hot exhaust from a diesel engine, as primary source of energy, is fed to an Heat Recovery Steam Generator (HRSG) to generate steam which in turn drives a steam turbine. The WHG is also an important component in cogeneration plants. Cogeneration plants typically have a higher overall efficiency in comparison to a combined cycle plant. This is due to the loss of energy associated with the steam turbine. WHG are an adaptive component (size) based on the primary source of power.
