| R245fa有机朗肯循环余热发电系统火用分析 |
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| 引用本文： | 罗向龙,徐乐,谭立锋,陈颖. R245fa有机朗肯循环余热发电系统火用分析[J]. 节能技术, 2012, 30(2): 131-135,141 |
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| 作者姓名： | 罗向龙 徐乐 谭立锋 陈颖 |
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| 作者单位： | 1. 广东工业大学材料与能源学院,广东 广州,510006
2. 元宝山发电有限责任公司,内蒙古赤峰,024070 |
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| 基金项目： | 国家自然科学基金（No.51006025）; 广东省自然科学基金（No.10451009001004802） |
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| 摘 要： | 以低品位热能驱动的有机朗肯循环发电系统,是实现将低品位热能转变为电能,进而提高热力系统总体热效率,降低污染排放的有效途径之一。本文建立了低品位热能发电系统火用分析模型,对以R245fa为工质的温度低于383.15 K的低品位热能有机朗肯循环余热发电系统进行了火用分析,得到了各环节的能量转换效率并确定了对系统性能影响最大的环节;通过改变蒸发器和冷凝器的压降和传热系数值,分析了主要换热设备的设计和运行性能参数对系统火用效率、热效率和发电量的影响趋势,提出了低品位热能发电系统的优化方向。
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| 关 键 词： | R245fa 有机朗肯循环 余热发电 火用分析 火用效率 |
Exergy Analysis of an Organic Rankine Cycle for Waste Heat Power Generation with R245fa |
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| LUO Xiang-long , XU Le , TAN Li-feng , CHEN Ying. Exergy Analysis of an Organic Rankine Cycle for Waste Heat Power Generation with R245fa[J]. Energy Conservation Technology, 2012, 30(2): 131-135,141 |
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| Authors: | LUO Xiang-long XU Le TAN Li-feng CHEN Ying |
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| Affiliation: | 1.School of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,China; 2.Yuan Bao-shan Power Generation Company Limited,Inner Mongdia 024070,China) |
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| Abstract: | The organic Rankine cycle（ORC）driven by the low grade heat is an effective way to improve the overall thermal efficiency and reduce the pollution emissions when transforming the low grade heat into electricity.In this paper,the exergy analysis model for an organic Rankine cycle for power generation utilizing R245fa was established.The ORC was driven by low grade waste heat with the temperature lower than 383.15 K.The analysis results reveal that the organic Rankine cycle is an effective way for low grade heat recovery.In addition,the pressure drop and heat transfer coefficient influence of evaporator and condenser on the system exergy efficiency,system thermal efficiency,ORC exergy efficiency and ORC thermal efficiency were also simulated and discussed. |
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| Keywords: | R245fa organic Rankine cycle waste heat power generation exergy analysis exergy efficiency |
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