The turbine can either travel a generator (put together cycle system) or just use the steam in approach applications (cogeneration or blended heat and ability (CHP)). HRSGs can have either a single steam drum (as shown in the animation under) or various steam drums and pressures. You will also find https://hydrocarbonheatpumps89901.thekatyblog.com/30205843/an-unbiased-view-of-waste-heat-recovery