| 气动发动机能量转移系统分析 |
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| 引用本文： | 左承基,钱叶剑,欧阳明高,杨福源.气动发动机能量转移系统分析[J].中国机械工程,2007,18(7):870-873. |
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| 作者姓名： | 左承基 钱叶剑 欧阳明高 杨福源 |
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| 作者单位： | 1. 合肥工业大学,合肥,230009
2. 清华大学汽车安全与节能国家重点实验室,北京,100084 |
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| 摘 要： | 描述了一台单缸二冲程气动发动机的能量转移系统，利用火用分析法对该系统各个环节的能量使用效率进行了分析。分析结果表明：制备效率和气动发动机的指示效率是造成总能量效率偏低的主要原因；在气动发动机能量转移系统中，应该选择合适的压缩机并采用多级压缩、中间冷却的方式制备压缩空气；采用串联气缸等温膨胀方式多级利用压缩空气，可以提高气动发动机的指示效率；在能量转移系统中，应该采用容积膨胀减压方式减少减压环节的可用能损失；合理利用低温排气的冷量火用可以提高气动发动机能量转移系统的总能量效率。
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| 关 键 词： | 气动发动机 能量转移系统 火用分析 总能量效率 |
| 文章编号： | 1004-132X（2007）07-0870-04 |
| 修稿时间： | 2006-01-09 |
Analysis on Energy Transfer System in Air-powered Engine |
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| Zuo Chengji,Qian Yejian,Ouyang Minggao,Yang Fuyuan.Analysis on Energy Transfer System in Air-powered Engine[J].China Mechanical Engineering,2007,18(7):870-873. |
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| Authors: | Zuo Chengji Qian Yejian Ouyang Minggao Yang Fuyuan |
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| Affiliation: | 1. Hefei University of Technology, Hefei, 230009 ; 2. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing, 100084 |
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| Abstract: | This paper described the energy transfer system of a single cylinder, two-stroke airpowered engine. The energy efficiency and energy loss in each component had been analyzed by means of energy analysis. The analytical results show that the low preparation efficiency and low indicated efficiency are the main causes resulting in the low total energy efficiency. Adopting an advanced compressor and multi-stage polytropic compression process with inter-stage cooling is a suitable energy saving method to generate high-pressure compressed air. The series-wound cylinder and isothermal expansion can improve indicated efficiency of air-powered engine. The expander can reduce exergy loss in pressure reducing process, and the utilization of cryogenic exergy of air-powered engine exhaust is useful to improve the total energy efficiency. |
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| Keywords: | air- powered engine energy transfer system exergy analysis total energy efficiency |
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