The turbine can both generate a generator (put together cycle process) or simply just make use of the steam in process programs (cogeneration or put together heat and electricity (CHP)). HRSGs can have either a single steam drum (as revealed in the animation beneath) or numerous steam drums and pressures. https://waste-heat-recovery57899.therainblog.com/30161410/new-step-by-step-map-for-waste-heat-recovery