After finishing this lesson, you will be able to identify and describe the major components and flow paths of a HRSG. • Recall the function of an HRSG • Describe the purpose of the economizer in an HRSG • Describe the purpose of the evaporator in an HRSG • Describe the purpose of the steam drum in an HRSG • Describe the purpose of the superheater in an HRSG • Outline the flow path of the combustion gas through the HRSG • Outline the flow path of the water/steam through the HRSG • Explain the relationship of water flow vs steam flow