In this arrangement fresh air (and not process air) is routed through the hot gas generator. This variant is chosen primarily when the hot gas generator is only required for starting the overall system and is then shut down.
Flanged to a return gas line (Flanged)
In this arrangement fresh air (and not process air) is routed through the hot gas generator. This variant is chosen primarily when the hot gas generator is only required for starting the overall system and is then shut down.