Operating Parameter Optimization using DOE Method to Reduce Unburned Carbon of Fly Ash for Tangential Fired Subcritical Coal Fired Power PlantPogganeswaran Gurusingam, Firas Basim Ismail and Taneshwaren SundaramMATEC Web Conf., 225 (2018) 05008DOI: https://doi.org/10.1051/matecconf/201822505008