Comparative assessment of biogas and producer gas with diesel in a twin cylinder dual-fuel diesel engine
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TECHNICAL PAPER
Comparative assessment of biogas and producer gas with diesel in a twin cylinder dual‑fuel diesel engine Chandrakanta Nayak1 · Bibhuti B. Sahoo2 Received: 16 December 2019 / Accepted: 3 September 2020 / Published online: 21 September 2020 © The Brazilian Society of Mechanical Sciences and Engineering 2020
Abstract The present work describes the preparation of producer gas and biogas from waste biomass material and its application in a twin cylinder dual-fuel diesel engine to study their performance and emission characteristics by the fractional replacement of fossil diesel in dual-fuel mode. Experiments are carried out both in diesel mode as well as dual-fuel mode operation under different engine loads. Comparative outcomes of performance and emission parameters for both modes of operations are presented. The study reveals that dual-mode operations show lower performance characteristics but better control of emission parameters like nitric oxide (NO) and smoke opacity compared to diesel mode. The hydrocarbon emission of producer gas-diesel and biogas-diesel was found to be 65.8% and 109.7% respectively, higher than diesel mode at the optimum load of 8 kW. Similarly, brake thermal efficiency of dual-mode operation of producer gas-diesel and biogas-diesel was 2.47% and 1.67%, respectively, lower than diesel mode. The pilot fuel savings percentage achieved was 85.5% in biogas-diesel and 83% in producer gas-diesel operation at the same loading condition. Further, comparing biogas with producer gas, it was observed that some of the emission parameters like carbon monoxide CO and NO were better controlled by biogas than producer gas whereas, HC and smoke emissions were better controlled by producer gas than biogas. Keywords Biogas · Producer gas · Dual fuel · Twin cylinder · Diesel engine
1 Introduction In the present situation, the diesel engine is considered as the most preferred engine for the automobile, agriculture and transport sector due to their excellent durability, superior thermal efficiency and low fuel consumption. But for the last decade, the depletion of fossil fuel reserves takes place at a faster rate which implies an energy crisis [1, 2]. Apart from this, global warming and the tremendous effect of human health due to the release of hazardous pollutants Technical Editor: Mario Eduardo Santos Martins. * Chandrakanta Nayak [email protected] Bibhuti B. Sahoo [email protected] 1
Department of Mechanical Engineering, Gandhi Institute for Technological Advancement, Bhubaneswar, Odisha, India
School of Mechanical Engineering, Vellore Institute of Technology Vellore, Vellore, Tamil Nadu 632014, India
2
from diesel engine exhaust are the major global issues. The main causes of global warming are due to release of anthropogenic gases from the dumping of biowaste in the open field and pollutants generated from the combustion of fossil fuel. Hence, to overcome these above issues like energy crisis, health and environmental problem, global interest is generated to adopt diff
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