Biodiesel from water hyacinth biomass and its influence on CI engine performance, emission, combustion and heat loss characteristics with the induction of hydroxy. (1st June 2021)

• Record Type: Journal Article
• Authors: Rahman, M.A.; Aziz, Mohammad Abdul
• Is Part Of: Energy. Volume 224(2021)
• Publication Date: 2021-06-01
• Subjects: Hydroxy -- Water hyacinth -- Biodiesel -- Emission -- Combustion -- Heat loss; BTE Brake thermal efficiency -- BSEC Brake specific energy consumption -- BD40 Biodiesel 40% + diesel 60% -- BP Brake power -- CI Compression ignition -- DF Diesel fuel -- EGT Exhaust gas temperature -- FFA Free fatty acid -- HHO Hydroxy -- HRR Heat release rate -- ID Ignition delay -- lpm liter per minute -- LCV Lower calorific value -- M Molar ratio; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2021.120151
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: A combination of biodiesel with hydroxy is expected to be one of the most viable fuels to enhance engine performance besides stringent emission norms. In this study, biodiesel was produced from water hyacinth and injected into the engine along with HHO in a volumetric ratio of 40% (BD40). The test was performed in a 4-stroke cycle, single cylinder, and water cool CI engine to evaluate performance, emission, combustion, and heat loss characteristics. The maximum biodiesel yield of 87% was obtained at 1% KOH, 9:1 M ratio, 500 rpm, and 55 °C for 90 min. The engine results showed that a mixture of hydroxy and biodiesel blends caused an increment of BTE by 12.4% while reducing BSEC by 13.5%, HC by 48% and CO by 21.9% as compared to DF. However, the induction of hydroxy increased NOx emission by 47.3% at full operational mode. The peak HHR, peak cylinder pressure, and ID were higher for hydroxy operated engine. The supplementation of hydroxy increased heat loss through the cooling water, and the exhaust. Thus, the present investigation has proved that the induction of hydroxy with BD40 in the CI engine improves performance and reduces exhaust emission like CO and HC except for NOx. Highlights: The maximum yield of biodiesel is found to be 87% through transesterification. The effect of hydroxy on engine performance, combustion, and heat loss is evaluated. The addition of hydroxy improves BTE and BSEC by 12.4% and 13.5% respectively. Hydroxy reduces CO and HC by 21.9% and 48% respectively but increases NOx by 47.3%. Hydroxy increases HHR, cylinder pressure, ID, cooling and exhaust heat loss.