Effect of the hydrogen/kerosene blend on the combustion characteristics and pollutant emissions in a mini jet engine under CDC conditions.
Saved in:
| Title: | Effect of the hydrogen/kerosene blend on the combustion characteristics and pollutant emissions in a mini jet engine under CDC conditions. |
|---|---|
| Authors: | Alabaş, Hüsamettin Alperen1 (AUTHOR) alperen.alabas@kapadokya.edu.tr, Albayrak Çeper, Bilge2 (AUTHOR) |
| Source: | International Journal of Hydrogen Energy. Jan2024:Part B, Vol. 52, p1275-1287. 13p. |
| Subjects: | Jet engines, Flame temperature, Combustion chambers, Combustion, Kerosene, Temperature distribution, Kerosene as fuel |
| Abstract: | In this CFD study conducted with the geometry of a mini gas turbine engine using kerosene as fuel, colorless distributed combustion conditions were achieved by increasing the N 2 ratio in the air. Then, H 2 was added to the kerosene fuel in order to increase the combustion performance and the combustion chamber temperature distributions, NO x , CO, and CO 2 values were examined. In the simulations using the simplified GTM-120 geometry, the combustion chamber outlet temperatures at 80 k, 100 k, and 120 k rpm were compared with the experimental results in the literature by changing the ratio of fuel and air for the validation study. Standard k-ε and Discrete Ordinates were chosen for turbulence and radiation models, respectively. In the study conducted with the non-premixed combustion model, simulations were made at O 2 rates of 21%, 19%, 17%, and 15% for the formation of colorless distributed combustion conditions. For enrichment with hydrogen, H 2 was added from 0% to 50% with 10% increments. HEF (Hydrogen energy fraction) has been used as the hydrogen addition rate. In light of the analyses made, it was seen that the colorless distributed combustion regime reduced the flame temperature from 2292 K to 1912 K and the NOx amount from 2.85 ppm to 0.0086 ppm. On the other hand, it is seen that this regime increased the CO emissions from 6.9 ppm to 38.67 ppm and the mole ratio of CO 2 from 6.25% to 6.94%. It was observed that these findings prepared the ground for increasing the amount of hydrogen in the fuel, which increases the flame temperature and, accordingly, NO x emissions. By adding 50% H 2 to kerosene under standard atmospheric conditions, the average NO x emission at the combustion chamber outlet increased from 2.85 ppm to 7.97 ppm, while the average CO emission decreased from 6.9 ppm to 1.08 ppm. As a matter of fact, by the addition of 50% H 2 to the kerosene with air that contains 15% O 2 , which is the most extreme combustion situation in this study, the flame temperature decreased to 1912 K, and NO x rose to 0.0713 ppm. However, the CO emissions at the combustion chamber outlet decreased to 1.83 ppm and the CO 2 ratio to 3.48%. Thus, with this study, it has become possible to use hydrogen as an alternative fuel in a real engine geometry by using CDC and hydrogen enrichment together, both in terms of pollutant emissions and combustion performance. • Colorless distributed combustion has been studied in a mini jet engine. • The effect of hydrogen addition on pollutant emissions was investigated. • Uniform thermal fields in the combustion chamber and ultra-low NO x emissions at the outlet have been obtained under CDC conditions. • In combustion with pure kerosene under CDC conditions, the mean NO x 0.0086 ppm and the mean CO 38.67 ppm were found at the combustion chamber outlet. • It has been observed that the addition of hydrogen reduces CO and CO 2 emissions. • By adding 50% H 2 to the kerosene with air containing 15% O 2 , the mean NO x 0.0713 ppm and mean CO 1.83 ppm were found at the combustion chamber outlet. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 174321600 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Effect of the hydrogen/kerosene blend on the combustion characteristics and pollutant emissions in a mini jet engine under CDC conditions. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Alabaş%2C+Hüsamettin+Alperen%22">Alabaş, Hüsamettin Alperen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> alperen.alabas@kapadokya.edu.tr</i><br /><searchLink fieldCode="AR" term="%22Albayrak+Çeper%2C+Bilge%22">Albayrak Çeper, Bilge</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Hydrogen+Energy%22">International Journal of Hydrogen Energy</searchLink>. Jan2024:Part B, Vol. 52, p1275-1287. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Jet+engines%22">Jet engines</searchLink><br /><searchLink fieldCode="DE" term="%22Flame+temperature%22">Flame temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Combustion+chambers%22">Combustion chambers</searchLink><br /><searchLink fieldCode="DE" term="%22Combustion%22">Combustion</searchLink><br /><searchLink fieldCode="DE" term="%22Kerosene%22">Kerosene</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+distribution%22">Temperature distribution</searchLink><br /><searchLink fieldCode="DE" term="%22Kerosene+as+fuel%22">Kerosene as fuel</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In this CFD study conducted with the geometry of a mini gas turbine engine using kerosene as fuel, colorless distributed combustion conditions were achieved by increasing the N 2 ratio in the air. Then, H 2 was added to the kerosene fuel in order to increase the combustion performance and the combustion chamber temperature distributions, NO x , CO, and CO 2 values were examined. In the simulations using the simplified GTM-120 geometry, the combustion chamber outlet temperatures at 80 k, 100 k, and 120 k rpm were compared with the experimental results in the literature by changing the ratio of fuel and air for the validation study. Standard k-ε and Discrete Ordinates were chosen for turbulence and radiation models, respectively. In the study conducted with the non-premixed combustion model, simulations were made at O 2 rates of 21%, 19%, 17%, and 15% for the formation of colorless distributed combustion conditions. For enrichment with hydrogen, H 2 was added from 0% to 50% with 10% increments. HEF (Hydrogen energy fraction) has been used as the hydrogen addition rate. In light of the analyses made, it was seen that the colorless distributed combustion regime reduced the flame temperature from 2292 K to 1912 K and the NOx amount from 2.85 ppm to 0.0086 ppm. On the other hand, it is seen that this regime increased the CO emissions from 6.9 ppm to 38.67 ppm and the mole ratio of CO 2 from 6.25% to 6.94%. It was observed that these findings prepared the ground for increasing the amount of hydrogen in the fuel, which increases the flame temperature and, accordingly, NO x emissions. By adding 50% H 2 to kerosene under standard atmospheric conditions, the average NO x emission at the combustion chamber outlet increased from 2.85 ppm to 7.97 ppm, while the average CO emission decreased from 6.9 ppm to 1.08 ppm. As a matter of fact, by the addition of 50% H 2 to the kerosene with air that contains 15% O 2 , which is the most extreme combustion situation in this study, the flame temperature decreased to 1912 K, and NO x rose to 0.0713 ppm. However, the CO emissions at the combustion chamber outlet decreased to 1.83 ppm and the CO 2 ratio to 3.48%. Thus, with this study, it has become possible to use hydrogen as an alternative fuel in a real engine geometry by using CDC and hydrogen enrichment together, both in terms of pollutant emissions and combustion performance. • Colorless distributed combustion has been studied in a mini jet engine. • The effect of hydrogen addition on pollutant emissions was investigated. • Uniform thermal fields in the combustion chamber and ultra-low NO x emissions at the outlet have been obtained under CDC conditions. • In combustion with pure kerosene under CDC conditions, the mean NO x 0.0086 ppm and the mean CO 38.67 ppm were found at the combustion chamber outlet. • It has been observed that the addition of hydrogen reduces CO and CO 2 emissions. • By adding 50% H 2 to the kerosene with air containing 15% O 2 , the mean NO x 0.0713 ppm and mean CO 1.83 ppm were found at the combustion chamber outlet. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=174321600 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ijhydene.2023.05.146 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 1275 Subjects: – SubjectFull: Jet engines Type: general – SubjectFull: Flame temperature Type: general – SubjectFull: Combustion chambers Type: general – SubjectFull: Combustion Type: general – SubjectFull: Kerosene Type: general – SubjectFull: Temperature distribution Type: general – SubjectFull: Kerosene as fuel Type: general Titles: – TitleFull: Effect of the hydrogen/kerosene blend on the combustion characteristics and pollutant emissions in a mini jet engine under CDC conditions. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Alabaş, Hüsamettin Alperen – PersonEntity: Name: NameFull: Albayrak Çeper, Bilge IsPartOfRelationships: – BibEntity: Dates: – D: 21 M: 01 Text: Jan2024:Part B Type: published Y: 2024 Identifiers: – Type: issn-print Value: 03603199 Numbering: – Type: volume Value: 52 Titles: – TitleFull: International Journal of Hydrogen Energy Type: main |
| ResultId | 1 |
