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دسته بندی:
مهندسی مکانیک - mechanical engineering
سال انتشار:
2016
عنوان انگلیسی مقاله:
Combustion of fuel blends containing digestate pyrolysis oil in a multi-cylinder compression ignition engine
ترجمه فارسی عنوان مقاله:
احتراق مخلوط سوخت حاوی روغن digestate تولید کننده گاز در یک موتور احتراق تراکمی چند سیلندره
منبع:
Sciencedirect - Elsevier - FUEL, 171 (2016) 18-28. doi:10.1016/j.fuel.2015.12.012
نویسنده:
A.K. Hossain, C. Serrano, J.B. Brammer, A. Omran, F. Ahmed, D.I. Smith, P.A. Davies
چکیده انگلیسی:
Digestate from the anaerobic digestion conversion process is widely used as a farm land fertiliser. This study proposes an alternative use as a source of energy. Dried digestate was pyrolysed and the resulting oil was blended with waste cooking oil and butanol (10, 20 and 30 vol.%). The physical and chemical properties of the pyrolysis oil blends were measured and compared with pure fossil diesel and waste cooking oil. The blends were tested in a multi-cylinder indirect injection compression ignition engine. Engine combustion, exhaust gas emissions and performance parameters were measured and compared with pure fossil diesel operation. The ASTM copper corrosion values for 20% and 30% pyrolysis blendswere 2c, compared to 1b for fossil diesel. The kinematic viscosities of the blends at 40 °C were 5–7 timeshigher than that of fossil diesel. Digested pyrolysis oil blends produced lower in-cylinder peak pressures than fossil diesel and waste cooking oil operation. The maximum heat release rates of the blends were approximately 8% higher than with fossil diesel. The ignition delay periods of the blends were higher; pyrolysis oil blends started to combust late and once combustion started burnt quicker than fossil diesel. The total burning duration of the 20% and 30% blends were decreased by 12% and 3% compared to fossil diesel. At full engine load, the brake thermal efficiencies of the blends were decreased by about 3–7% when compared to fossil diesel. The pyrolysis blends gave lower smoke levels; at full engine load, smoke level of the 20% blend was 44% lower than fossil diesel. In comparison to fossil diesel and at full load, the brake specific fuel consumption (wt.) of the 30% and 20% blends were approximately 32% and 15% higher. At full engine load, the CO emission of the 20% and 30% blends were decreased by 39% and 66% with respect to the fossil diesel. Blends CO2 emissions were similar to that of fossil diesel; at full engine load, 30% blend produced approximately 5% higher CO2 emission than fossil diesel. The study concludes that on the basis of short term engine experiment up to 30% blend of pyrolysis oil from digestate of arable crops can be used in a compression ignition engine.© 2015 Elsevier Ltd. All rights reserved.
Keywords: CI engine | Anaerobic digestion | Intermediate pyrolysis | Digestate | Combustion | Emission
قیمت: رایگان
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