Abstract: A waste heat recovery system includes a hot gas stream flow path, a pump, an expander, a first working fluid flow path fluidly connecting a pump outlet and an expander inlet, a second working fluid flow path fluidly connecting an expander outlet and a pump inlet, a first heat exchange section that transfers heat from the hot gas stream to working fluid traveling along the first working fluid flow path, a second heat exchange that transfers heat from the hot gas stream to working fluid traveling along the first working fluid flow path between the pump and the first heat exchange section, and a third working fluid flow path fluidly connecting a first point of the first working fluid path to a second point of the second working fluid path to permit at least a portion of the working fluid to bypass the first heat exchange section and the expander.