Heat Recovery Steam Generator Market Size, Share and Industry Analysis, By Design (Horizontal Drum and Vertical Drum), By Application (Cogeneration, and Combined Cycle), By Power Rating (Up to 30 MW, 31 MW - 100 MW, and Above 100 MW), By End-User (Utility, Chemicals, Refineries, Pulp & Paper, and Others), and Regional Forecast, 2019 to 2026