Effects of intake air temperature on energy, exergy and sustainability analyses in an RCCI engine fueled with iso-propanol and n-heptane

Serdar Halis and Battal Doğan

Energy, 2023, vol. 284, issue C

Abstract: In this study, performance and emission tests were carried out in a diesel engine operating with RCCI combustion mode by varying the amount of fuel taken into the cylinder and the air temperature in one cycle. Thermodynamic performance was determined by making energy, exergy and sustainability analyzes using the data obtained in the tests. The effects of change in intake air temperature on thermal efficiency, exergy efficiency, exhaust exergy, exergy destruction, and sustainability index were calculated. As the temperature of the air taken into the cylinder increases, the lost exergy decreases and the exergy efficiency increases. At 2500 rpm engine speed, when the amount of fuel taken into the cylinder is 20 mg/cycle, if the inlet temperature is 30°C, 50°C and 70°C, the exergy destruction is 9.873 kW, 9.760 kW and 9.394 kW, respectively. The highest thermal and exergy efficiencies were calculated as 31.58 % and 28.7 %, respectively, at an engine speed of 2000 rpm, when the fuel taken into the cylinder per cycle was 20 mg and the intake air temperature was 70°C. Moreover, the sustainability index was found to be 1.4 under the same conditions. The thermodynamic results show that RCCI mode can be used as alternative combustion mode.

Keywords: RCCI; Thermal efficiency; Exergy efficiency; Sustainability index; Iso-propanol; n-heptane (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544223024441
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:284:y:2023:i:c:s0360544223024441

DOI: 10.1016/j.energy.2023.129050

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().