| 地热驱动有机朗肯-单级压缩制冷系统的热力学分析 |
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| 引用本文： | 武卫东,陈小娇,于文远.地热驱动有机朗肯-单级压缩制冷系统的热力学分析[J].上海理工大学学报,2015,37(2):103-109. |
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| 作者姓名： | 武卫东 陈小娇 于文远 |
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| 作者单位： | 上海理工大学 能源与动力工程学院, 上海 200093;上海理工大学 能源与动力工程学院, 上海 200093;上海理工大学 能源与动力工程学院, 上海 200093 |
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| 基金项目： | 上海市自然科学基金资助项目(14ZR1429000);上海市人才发展资金资助项目(2010008) |
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| 摘 要： | 建立了地热驱动有机朗肯-单级压缩制冷系统的热力学模型,根据热力学第一定律和第二定律,以系统性能系数和火用效率作为系统性能的评价指标,研究分别以R245fa,R123,R114,R141b作为循环工质时,地热流温度(发生温度)、凝汽温度和蒸发温度对系统性能的影响,并筛选出适用于中温地热能驱动的有机朗肯-单机压缩制冷系统最佳工质.计算结果表明,R141b综合性能最佳,根据典型工况下R141b作为循环工质时系统火用损的分布情况,在发生器和冷凝器处进行改进将大大提高系统的火用效率.
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| 关 键 词： | 地热能 朗肯循环 蒸汽压缩制冷循环 热力学分析 |
| 收稿时间： | 2015/1/26 0:00:00 |
Thermodynamic Analysis of Organic Rankine-Single-Stage Vapor Compression Refrigeration System Powered by Medium-Temperature Geothermal Energy |
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| WU Weidong,CHEN Xiaojiao and YU Wenyuan.Thermodynamic Analysis of Organic Rankine-Single-Stage Vapor Compression Refrigeration System Powered by Medium-Temperature Geothermal Energy[J].Journal of University of Shanghai For Science and Technology,2015,37(2):103-109. |
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| Authors: | WU Weidong CHEN Xiaojiao and YU Wenyuan |
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| Institution: | School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | A thermodynamic model of organic Rankine-single-stage vapor compression refrigeration system was built.From the point of view of the first and second laws of thermodynamics,the effects of generating temperature,condensing temperature and evaporation temperature on system performance were studied when using R245fa,R123,R114 and R141b as working fluids respectively,taking the system coefficient of performance and exergy efficiency as evaluation criteria.The calculated results show that R141b is the optimal working fluid.Then the distribution of exergy loss was investigated under typical working conditions with R141b as working fluid.It is concluded that the condenser of vapor compression refrigeration system and the boiler of organic Rankine cycle are the key components to improve the exergy efficiency of the whole system. |
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| Keywords: | geothermal energy Rankine cycle vapor compression refrigeration cycle thermodynamic analysis |
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