Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Thermal performance of a micro-combustor for micro-gas turbine system | |
| Cao, H. L.; Xu, J. L. | |
| 2007-05-01 | |
| Source Publication | ENERGY CONVERSION AND MANAGEMENT
 |
| ISSN | 0196-8904 |
| Volume | 48Issue:5Pages:1569-1578 |
| Corresponding Author | xujl@ms.giec.ac.cn |
| Abstract | Premixed combustion of hydrogen gas and air was performed in a stainless steel based micro-annular combustor for a micro-gas turbine system. Micro-scale combustion has proved to be stable in the micro-combustor with a gap of 2 mm. The operating range of the micro-combustor was measured, and the maximum excess air ratio is up to 4.5. The distribution of the outer wall temperature and the temperature of exhaust gas of the micro-conbustor with excess air ratio were obtained, and the wall temperature of the micro-combustor reaches its maximum value at the excess air ratio of 0.9 instead of 1 (stoichiometric ratio). The heat loss of the micro-combustor to the environment was calculated and even exceeds 70% of the total thermal power computed from the consumed hydrogen mass flow rate. Moreover, radiant hunt transfer covers a large fraction of the total heat loss. Measures used to reduce the heat loss were proposed to improve the thermal performance of the micro-combustor. The optimal operating status of the micro-combustor and micro-gas turbine is analyzed and proposed by analyzing the relationship of the temperature of the exhaust gas of the micro-combustor with thermal power and excess air ratio. The investigation of the thermal performance of the micro-combustor is helpful to design an improved microcombustor. (C) 2006 Elsevier Ltd. All rights reserved. |
| Subtype | Article |
| Other Abstract | Premixed combustion of hydrogen gas and air was performed in a stainless steel based micro-annular combustor for a micro-gas turbine system. Micro-scale combustion has proved to be stable in the micro-combustor with a gap of 2 mm. The operating range of the micro-combustor was measured, and the maximum excess air ratio is up to 4.5. The distribution of the outer wall temperature and the temperature of exhaust gas of the micro-conbustor with excess air ratio were obtained, and the wall temperature of the micro-combustor reaches its maximum value at the excess air ratio of 0.9 instead of 1 (stoichiometric ratio). The heat loss of the micro-combustor to the environment was calculated and even exceeds 70% of the total thermal power computed from the consumed hydrogen mass flow rate. Moreover, radiant hunt transfer covers a large fraction of the total heat loss. Measures used to reduce the heat loss were proposed to improve the thermal performance of the micro-combustor. The optimal operating status of the micro-combustor and micro-gas turbine is analyzed and proposed by analyzing the relationship of the temperature of the exhaust gas of the micro-combustor with thermal power and excess air ratio. The investigation of the thermal performance of the micro-combustor is helpful to design an improved microcombustor. |
| Keyword | Micro-combustion Micro-combustor Thermal Performance Operating Range Heat Loss |
| WOS Headings | Science & Technology ; Physical Sciences ; Technology |
| DOI | 10.1016/j.enconman.2006.11.022 |
| WOS Subject Extended | Thermodynamics ; Energy & Fuels ; Mechanics ; Physics |
| URL | 查看原文 |
| WOS Keyword | ENGINE |
| Indexed By | SCI |
| Language | 英语 |
| WOS Subject | Thermodynamics ; Energy & Fuels ; Mechanics ; Physics, Nuclear |
| WOS ID | WOS:000245957800018 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/3472 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Wushan 510640, Peoples R China 2.Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Hefei 230026, Peoples R China |
| Recommended Citation GB/T 7714 | Cao, H. L.,Xu, J. L.. Thermal performance of a micro-combustor for micro-gas turbine system[J]. ENERGY CONVERSION AND MANAGEMENT,2007,48(5):1569-1578. |
| APA | Cao, H. L.,&Xu, J. L..(2007).Thermal performance of a micro-combustor for micro-gas turbine system.ENERGY CONVERSION AND MANAGEMENT,48(5),1569-1578. |
| MLA | Cao, H. L.,et al."Thermal performance of a micro-combustor for micro-gas turbine system".ENERGY CONVERSION AND MANAGEMENT 48.5(2007):1569-1578. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Thermal performance （636KB） | 开放获取 | -- | View Download | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment