Effect of Intake Charge Temperature on Oxy-Fuel Combustion in an HCCI Diesel Engine Under Different Carbon Dioxide Dilutions
Journal of Engineering for Gas Turbines and Power, ISSN: 1528-8919, Vol: 145, Issue: 1
2023
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Most Recent News
Investigators at University of Lille Discuss Findings in Gas Turbines and Power Engineering (Effect of Intake Charge Temperature On Oxy-fuel Combustion In an Hcci Diesel Engine Under Different Carbon Dioxide Dilutions)
2023 MAR 09 (NewsRx) -- By a News Reporter-Staff News Editor at Energy Daily News -- Research findings on Engineering - Gas Turbines and Power
Article Description
Carbon dioxide is one of the leading contributors to global warming. Oxy-fuel combustion (OFC) integrated with carbon capture and storage (CCS) technology is an efficient way to reduce carbon dioxide emissions. In OFC, pure oxygen (O) is used instead of air to react with hydrocarbon fuel. Consequently, the products of combustion mainly include carbon dioxide (CO) and water vapor (HO) under lean conditions. Meanwhile, due to the absence of N in the intake charge, nitrogen-related emissions such as NO are greatly removed from the exhaust gases. In the present study, the effect of intake charge temperature on OFC has been investigated in a diesel engine under the homogeneous charge compression ignition (HCCI) mode. In order to control combustion temperature and avoid overheating problems caused by oxygen in OFC, a portion of the exhaust CO was added to the O. For this purpose, different CO dilutions ranging from 79-85% have been employed. It has been found that OFC can significantly reduce CO and particulate matter (PM) emissions while eliminating NO emissions. With a higher intake charge temperature, combustion occurs earlier with shorter main stages, reducing the indicated mean effective pressure (IMEP) and increasing the indicated specific fuel consumption (ISFC), whereas, with a lower intake charge temperature, combustion stability deteriorates leading to incomplete OFC. By raising the intake charge temperature from 140 C to 220 C and applying 21% O and 79% CO v/v, the indicated thermal efficiency (ITE) is reduced from 34.6% to 29.2% while ISFC is increased from 0.24 to 0.285 Kg/kWh.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85144239326&origin=inward; http://dx.doi.org/10.1115/1.4055882; https://asmedigitalcollection.asme.org/gasturbinespower/article/145/1/011012/1147281/Effect-of-Intake-Charge-Temperature-on-Oxy-Fuel; https://dx.doi.org/10.1115/1.4055882; https://asmedigitalcollection.asme.org/gasturbinespower/article-abstract/145/1/011012/1147281/Effect-of-Intake-Charge-Temperature-on-Oxy-Fuel?redirectedFrom=fulltext
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