Akademik Veri Yönetim Sistemi
JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI, 2024 (ESCI)
Energy is becoming one of the most important problems of today due to rapid population growth, significant developments in industry, urbanisation, unplanned use of resources and changing production and consumption methodology as a result of globalisation. In this study, the feasibility of burning a methane-hydrogen fuel mixture without causing any physical changes and power loss in a domestic boiler burner is experimentally investigated and numerically modelled. The study consists of two phases. In the first stage, the hydrogen-methane fuel mixture was burned experimentally in a hermetic condensing boiler. In the second stage, the combustion is modelled in a CFD programme. Realizable & imath;<- epsilon turbulence model, Eddy-Dissipation combustion model and Gri-Mech 3.0 chemical kinetics for 4-step methane (CH4 ) and 9-step hydrogen (H 2 ) combustion reactions were used in the numerical analysis. In the CH4-H-2 combustion, the amount of CH4 was kept constant at 20 Sl/min and hydrogen was added in 10% increments between 0% and 30% by volume in the fuel mixture. Temperature measurements taken from the combustion chamber increased from 571.1 Kat 0% H 2 to 636.2 Kat 30% H 2 . In the emission measurement, the carbon monoxide rate decreased from 15 ppm at 0% H 2 to 8 ppm at 30% H-2 , the carbon dioxide rate was measured between 2.6-2.8% and the nitrogen oxide rate was measured between 10-13 ppm. In the numerical analysis, the thermal output of the boiler changed from 13 kW to 14.7 kW for an equivalence ratio of 0.7.