| CO_2-C_3H_8复叠低温预冷系统的理论分析及优化设计 |
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| 引用本文： | 习兰,刘秀芳,侯予.CO_2-C_3H_8复叠低温预冷系统的理论分析及优化设计[J].低温工程,2009(5). |
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| 作者姓名： | 习兰 刘秀芳 侯予 |
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| 作者单位： | 1. 西安交通大学能源与动力工程学院,西安,710049
2. 西安交通大学能源与动力工程学院,西安,710049;河南理工大学,焦作,454000 |
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| 基金项目： | 长江学者和创新团队发展计划资助项目，西安交通大学校长科研基金 |
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| 摘 要： | 设计了一个低温级带回热器的CO2-C3H8复叠制冷循环低温预冷系统(213 K),并进行了低温预冷系统的参数选择和优化设计.该系统高温级循环采用CO2、低温级循环采用C3H8作为循环工质.通过对该系统的理论计算,得出了中间温度、复叠温差及低温级蒸发器冷端温差对系统性能系数的影响曲线;通过进一步的优化分析获得了系统最佳中间温度及对应的系统性能系数COP与复叠温差-低温级蒸发器冷端温差以及制冷温度-冷凝温度的关联式.
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| 关 键 词： | 复叠制冷循环 预冷 最佳中间温度 |
Theoretical analysis and optimization of a CO_2-C_3H_8 cascade precooling system for cryogenic applications |
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| Xi Lan Liu Xiufang, Hou Yu.Theoretical analysis and optimization of a CO_2-C_3H_8 cascade precooling system for cryogenic applications[J].Cryogenics,2009(5). |
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| Authors: | Xi Lan Liu Xiufang Hou Yu |
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| Affiliation: | Xi Lan 1 Liu Xiufang1,2 Hou Yu1(1School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China)(2Henan Polytechnic University,Jiaozuo 454000,China) |
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| Abstract: | A CO2-C3H8 cascade cycle precooling system(213 K) was designed,and the system parameter selection and optimum design were performed.The system used CO2 as high temperature refrigerant and C3H8 as low temperature refrigerant respectively.Based on the theoretical analysis of the system,the effect curves with variations in intermediate temperature,overlap temperature and temperature approach were presented.Through optimum analysis of the system,the equations of optimum performance and corresponding parameters ... |
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| Keywords: | cascade refrigeration cycle precooling optimum intermediate temperature |
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