Experimental and thermodynamical analyses of the diesel exhaust vortex generator heat exchanger for optimizing its operating condition. (22nd January 2015)

• Record Type: Journal Article
• Authors: Hatami, M.; Ganji, D.D.; Gorji-Bandpy, M.
• Is Part Of: Applied thermal engineering. Volume 75(2015:Jan.)
• Page Start: 580
• Page End: 591
• Publication Date: 2015-01-22
• Subjects: Optimization -- Exergy recovery -- Irreversibility -- Vortex generator -- Diesel exhaust; Heat engineering -- Periodicals; Heating -- Equipment and supplies -- Periodicals; Periodicals; 621.40205
• DOI: 10.1016/j.applthermaleng.2014.09.058
• Languages: English
• ISSNs: 1359-4311

Abstract

Abstract: In this research, a vortex generator heat exchanger is used to recover exergy from the exhaust of an OM314 diesel engine. Twenty vortex generators with 30° angle of attack are used to increase the heat recovery as well as the low back pressure in the exhaust. The experiments are prepared for five engine loads (0, 20, 40, 60 and 80% of full load), two exhaust gases amount (50 and 100%) and four water mass flow rates (50, 40, 30 and 20 g/s). After a thermodynamical analysis on the obtained data, an optimization study based on Central Composite Design (CCD) is performed due to complex effect of engine loads and water mass flow rates on exergy recovery and irreversibility to reach the best operating condition. Graphical abstract: Highlights: A vortex generator heat exchanger is used for diesel exhaust heat recovery. A thermodynamic analysis is performed for experimental data. Exergy recovery, irreversibility are calculated in different exhaust gases amount. Optimization study is performed using response surface method.