Heat transfer analysis of premixed low calorific value landfill gas impinging flame under oxygen and hydrogen enrichment
The effective utilization of low-calorific value gases is important for meeting growing demand of energy and also addressing associated environmental concerns. In this study, the heat transfer of impinging flames of low-calorific value landfill gas (BG30) was analyzed under hydrogen and oxygen enric...
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| Language: | English |
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Elsevier
2025-03-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025002063 |
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| author | Kangdong Chen Udaya Kahangamage Kang Tan Chun-wah Leung |
| author_facet | Kangdong Chen Udaya Kahangamage Kang Tan Chun-wah Leung |
| author_sort | Kangdong Chen |
| collection | DOAJ |
| description | The effective utilization of low-calorific value gases is important for meeting growing demand of energy and also addressing associated environmental concerns. In this study, the heat transfer of impinging flames of low-calorific value landfill gas (BG30) was analyzed under hydrogen and oxygen enrichment. Numerical simulations were conducted to estimate the heat transfer from the impinging flames and compared with that of the high-calorific value landfill gas (BG60) flames. The heat flux from the impinging flame was analyzed from the perspectives of Laminar Burning Velocity (LBV), temperature and velocity fields of the impinging flame using the field synergy principle. The heat transfer from impinging flame on to the target plate was categorized into heat transfer from the heat generated in the boundary layer (QΦ) and convective heat transfer (Qs). The results demonstrate that BG30, after being enriched with 29% hydrogen and 39% oxygen, exhibits an LBV equivalent to that of BG60. The optimal convective heat transfer is achieved when the target plate is positioned slightly above the tip of the flame cone, while the optimal total heat transfer occurs when the target plate is located approximately 2/3 of the flame cone height. Based on the insights from numerical investigations, a cap-shaped target plate was tested for heat transfer from impinging flames. It effectively enhanced the total heat transfer rate on to the target plate. |
| format | Article |
| id | doaj-art-2df8c9ccd1aa4f798de583e7ec408b8c |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-2df8c9ccd1aa4f798de583e7ec408b8c2025-01-26T05:04:48ZengElsevierResults in Engineering2590-12302025-03-0125104118Heat transfer analysis of premixed low calorific value landfill gas impinging flame under oxygen and hydrogen enrichmentKangdong Chen0Udaya Kahangamage1Kang Tan2Chun-wah Leung3School of Professional Education and Executive Development, The Hong Kong Polytechnic University, Hong KongCorresponding author.; School of Professional Education and Executive Development, The Hong Kong Polytechnic University, Hong KongSchool of Professional Education and Executive Development, The Hong Kong Polytechnic University, Hong KongSchool of Professional Education and Executive Development, The Hong Kong Polytechnic University, Hong KongThe effective utilization of low-calorific value gases is important for meeting growing demand of energy and also addressing associated environmental concerns. In this study, the heat transfer of impinging flames of low-calorific value landfill gas (BG30) was analyzed under hydrogen and oxygen enrichment. Numerical simulations were conducted to estimate the heat transfer from the impinging flames and compared with that of the high-calorific value landfill gas (BG60) flames. The heat flux from the impinging flame was analyzed from the perspectives of Laminar Burning Velocity (LBV), temperature and velocity fields of the impinging flame using the field synergy principle. The heat transfer from impinging flame on to the target plate was categorized into heat transfer from the heat generated in the boundary layer (QΦ) and convective heat transfer (Qs). The results demonstrate that BG30, after being enriched with 29% hydrogen and 39% oxygen, exhibits an LBV equivalent to that of BG60. The optimal convective heat transfer is achieved when the target plate is positioned slightly above the tip of the flame cone, while the optimal total heat transfer occurs when the target plate is located approximately 2/3 of the flame cone height. Based on the insights from numerical investigations, a cap-shaped target plate was tested for heat transfer from impinging flames. It effectively enhanced the total heat transfer rate on to the target plate.http://www.sciencedirect.com/science/article/pii/S2590123025002063Low calorific value landfill gasImpinging flameField synergy principleHeat transfer enhancement |
| spellingShingle | Kangdong Chen Udaya Kahangamage Kang Tan Chun-wah Leung Heat transfer analysis of premixed low calorific value landfill gas impinging flame under oxygen and hydrogen enrichment Results in Engineering Low calorific value landfill gas Impinging flame Field synergy principle Heat transfer enhancement |
| title | Heat transfer analysis of premixed low calorific value landfill gas impinging flame under oxygen and hydrogen enrichment |
| title_full | Heat transfer analysis of premixed low calorific value landfill gas impinging flame under oxygen and hydrogen enrichment |
| title_fullStr | Heat transfer analysis of premixed low calorific value landfill gas impinging flame under oxygen and hydrogen enrichment |
| title_full_unstemmed | Heat transfer analysis of premixed low calorific value landfill gas impinging flame under oxygen and hydrogen enrichment |
| title_short | Heat transfer analysis of premixed low calorific value landfill gas impinging flame under oxygen and hydrogen enrichment |
| title_sort | heat transfer analysis of premixed low calorific value landfill gas impinging flame under oxygen and hydrogen enrichment |
| topic | Low calorific value landfill gas Impinging flame Field synergy principle Heat transfer enhancement |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025002063 |
| work_keys_str_mv | AT kangdongchen heattransferanalysisofpremixedlowcalorificvaluelandfillgasimpingingflameunderoxygenandhydrogenenrichment AT udayakahangamage heattransferanalysisofpremixedlowcalorificvaluelandfillgasimpingingflameunderoxygenandhydrogenenrichment AT kangtan heattransferanalysisofpremixedlowcalorificvaluelandfillgasimpingingflameunderoxygenandhydrogenenrichment AT chunwahleung heattransferanalysisofpremixedlowcalorificvaluelandfillgasimpingingflameunderoxygenandhydrogenenrichment |