| 余热利用有机物朗肯循环最佳热回收效率分析 |
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| 引用本文： | 顾伟,翁一武,王玉璋,孙绍芹. 余热利用有机物朗肯循环最佳热回收效率分析[J]. 太阳能学报, 2011, 32(5): 662-668 |
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| 作者姓名： | 顾伟 翁一武 王玉璋 孙绍芹 |
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| 作者单位： | 上海交通大学机械与动力工程学院,上海,200240 |
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| 基金项目： | 国家自然科学基金，上海市国际合作基金 |
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| 摘 要： | 首先通过分析余热回收动力循环的不可逆损失,得到循环的理想效率。其次,通过分析发现热回收效率随蒸发压力变化存在最佳值,并且最佳热回收效率与最小熵增率是等价的。然后,通过研究两种简化的余热利用动力模型,应用有限时间热力学的相关方法,指出最大热回收效率产生的原因。再次,研究了余热变化时系统最佳工况的变化。结果发现最佳蒸发压力随余热流量、入口温度增加而显著增加,而与余热组分关系不大。最后,研究了工质对系统最佳工况的影响,发现较高临界温度的工质,最佳蒸发压力较低。
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| 关 键 词： | 余热利用 有机物朗肯循环 热回收效率 最佳 |
HEAT RECOVERY EFFICIENCY ANALYSIS OF WASTE HEAT DRIVEN ORGANIC RANKINE CYCLE |
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| Gu Wei,Weng Yiwu,Wang Yuzhang,Sun Shaoqin. HEAT RECOVERY EFFICIENCY ANALYSIS OF WASTE HEAT DRIVEN ORGANIC RANKINE CYCLE[J]. Acta Energiae Solaris Sinica, 2011, 32(5): 662-668 |
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| Authors: | Gu Wei Weng Yiwu Wang Yuzhang Sun Shaoqin |
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| Affiliation: | Gu Wei,Weng Yiwu,Wang Yuzhang,Sun Shaoqin(School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200240,China) |
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| Abstract: | Because of heat transfer,temperature of heat source for Organic Rankine Cycle(ORC) is changing along the flow direction.So heat recovery efficiency is more significant than cycle efficiency.First of all,this paper describes three types of system loss,and according to these loss,an ideal cycle of waste heat driven power cycle was presented.Then,the system analysis showed that an optimum evaporating exists for ORC system,the heat recovery efficiency has a maximum value.Thirdly,two simplified power model was i... |
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| Keywords: | waste heat utilization organic Rankine cycle heat recovery efficiency optimum |
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