Authors: Saket Verma; L.M. Das; S.C. Kaushik
Addresses: Department of Mechanical Engineering, BITS Pilani, Pilani Campus, India ' Centre for Energy Studies, Indian Institute of Technology Delhi, India ' Centre for Energy Studies, Indian Institute of Technology Delhi, India
Abstract: In the present configuration, GTL replaces diesel, and biogas is used as gaseous fuel in the dual fuel (DF) operations. The effects of this substitution have been evaluated from the perspectives of second-law of thermodynamics. The results are compared with the diesel single-fuel, GTL single-fuel and GTL-biogas DF operations. Also, engine out emissions have been compared to understand the environmental impact of these fuel combinations. The results show that DF operation offers up to 80% pilot liquid fuel replacement by biogas, however, some reductions in energy and exergy efficiencies are observed.
Keywords: biogas; diesel; dual fuel; exergy; gas-to-liquids; GTL; renewable fuels; irreversibility.
International Journal of Exergy, 2021 Vol.36 No.2/3/4, pp.330 - 344
Received: 31 Aug 2020
Accepted: 01 Apr 2021
Published online: 03 Nov 2021 *