Mochammad Brillian Bima Wicaksono and Royb Fatkhur Rizal 2026. Analysis Of The Effect Of Excess Air On Boiler Combustion Efficiency At PT PLN Nusantara Power Paiton Unit 9. International Journal of Health Engineering and Technology. 5, 2 (Jul. 2026). DOI:https://doi.org/10.55227/ijhet.v5i2.912.