An exergy study on compression ignition engine operating with biogas gas and coke oven gas
by Hongqing Feng; Zhirong Nan; Xinyi Wang; Weiwen Zhang
International Journal of Exergy (IJEX), Vol. 33, No. 2, 2020

Abstract: This paper studies the combustion emission characteristics, exergy conversion and utilisation, and irreversibility of compression ignition (CI) engines fuelled by coke oven gas (COG) and biogas, which is conducted by establishing a zero-dimensional single-zone combustion model and an exergy analysis model. When the intake air temperature is same, the peak temperature of the COG in the cylinder is higher than the biogas, and the difference is about 64 K, which results in much higher NO_x emission of the coke oven gas. The irreversible loss of COG-fuelled engines in the working process is 22% and the working exergy accounts for 58%, which is much larger than biogas. By properly increasing the intake air temperature, the intake pressure and speed can reduce the irreversible loss.

Online publication date: Wed, 30-Sep-2020

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