... numerically at a fixed excess air factor, λ = 1.15. This study aims to determine the hardware modifications required for boilers to be retrofitted for pure hydrogen operation and investigates how NOx emissions are affected by hydrogen enrichment. The results showed insignificant increases in maximum...

... emissions decline compared with that in the DI mode when the direct injection time is 7 deg CA BTDC. When the certainty EGR is used, the NOx emissions decrease more than 60% compared with that in the DI mode. The maximum temperature in the cylinder decreased since the premixed combustion ratio increases...

... , “ Genetic Algorithm and Artificial Neural Network for Engine Optimisation of Efficiency and NOx Emission ,” Fuel , 83 ( 7–8 ), pp. 885 – 895 . 10.1016/j.fuel.2003.10.025 [31] Boniecki , P. , Dach , J. , Pilarski , K. , and Piekarska-Boniecka , H. , 2012 , “ Artificial Neural...

... NOx Emission in High-Temperature Air Combustion ,” Energy Fuel. , 26 ( 5 ), pp. 2821 – 2829 . 10.1021/ef300254m AQSIQ , 2016 , “ Performance Test Code for Utility Boiler ,” Administration of Quality Supervision, Inspection and Quarantine , Beijing , Standard No. GB/T10184-2015...