TY - JOUR T1 - Investigation of performance and exhaust emissions in direct injection engine using coconut oil biodiesel TT - مطالعه آزمایشگاهی احتراق زغال‌سنگ در کوره بستر سیال حبابی JF - yu-ste JO - yu-ste VL - 2 IS - 1 UR - http://yujs.yu.ac.ir/jste/article-1-63-en.html Y1 - 2017 SP - 1 EP - 19 KW - Bubbling Fluidized Bed KW - Combustion KW - Coal KW - Temperature distribution N2 - In this paper, coal combustion process in a bubbling fluidized bed furnace were investigated experimentally. Analysis of experimental data shows that the coal size particles inlet to bed and rate of air injected into the furnace, are determinant parameter in bed temperature and proper combustion in the fluidized bed furnace. The highest temperature of 1050°C was obtained with air flow rate of 12 for the combustion of coal mixture with 75 wt% particles in group 2 and 25 wt% in group 3. M3 ER -