| 恒温热源实际布雷顿循环的功率密度优化 |
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| 引用本文： | 陈林根,郑军林,孙丰瑞.恒温热源实际布雷顿循环的功率密度优化[J].机械工程学报,2002,38(2):86-89. |
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| 作者姓名： | 陈林根 郑军林 孙丰瑞 |
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| 作者单位： | 海军工程大学306教研室,武汉,430033 |
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| 基金项目： | 国家重点基础研究发展规划项目资助（G2000026301）。 |
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| 摘 要： | 计入工质与高、低温侧换热器的热阻损失及压气机和涡轮机中的不可逆压缩和膨胀损失，用有限时间热力学方法导出了恒温热源条件下实际不可逆布雷顿循环功率密度与压比间的解析式，借助于数值计算研究了高、低温侧换热器的最优热导率分配对最大功率密度的影响。
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| 关 键 词： | 有限时间热力学 不可逆循环 布雷顿循环 功率密度 |
| 修稿时间： | 2000年6月23日 |
POWER DENSITY OPTIMIZATION OF A REAL BRAYTON CYCLE WITH CONSTANT-TEMPERATURE HEAT RESERVOIRS |
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| Chen Lingen,Zheng Junlin,Sun Fengrui.POWER DENSITY OPTIMIZATION OF A REAL BRAYTON CYCLE WITH CONSTANT-TEMPERATURE HEAT RESERVOIRS[J].Chinese Journal of Mechanical Engineering,2002,38(2):86-89. |
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| Authors: | Chen Lingen Zheng Junlin Sun Fengrui |
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| Affiliation: | Naval University of Engineering |
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| Abstract: | The analytical formulas about the relations between power density and pressure ratio of an irreversible Brayton cycle coupled to constant-temperature heat reservoirs are derived using finite-time thermodynamics in this paper. In the analysis, the irreversibilities involve the heat resistance losses in the hot- and cold-side heat exchangers, and the irreversible compression and expansion losses in the compressor and turbine. The influences of the thermal conductance distribution of hot- and cold-side heat exchangers on the optimal performance of the cycle are studied by detailed numerical examples. |
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| Keywords: | Finite-time thermodynamics Irreversible cycle Brayton cycle Power density |
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