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基于温差均匀性原则的换热网络夹点设计法 被引量:2
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作者 万义群 崔国民 +1 位作者 彭富裕 许海珠 《石油与天然气化工》 CAS CSCD 2013年第6期555-560,共6页
对换热网络的传统夹点设计法进行了改进。将换热网络组合曲线分成若干段单独处理,以温差均匀性因子作为评价指标设计各段网络结构,将各段设计的结构及远离夹点处的匹配组成完整的换热网络初始结构,采用牛顿法优化初始结构的换热器单元,... 对换热网络的传统夹点设计法进行了改进。将换热网络组合曲线分成若干段单独处理,以温差均匀性因子作为评价指标设计各段网络结构,将各段设计的结构及远离夹点处的匹配组成完整的换热网络初始结构,采用牛顿法优化初始结构的换热器单元,以达到调优的目的,最终获得具有最优年综合费用的换热网络结构。通过具体算例表明,依据温差均匀性原则设计的换热网络具有较好的换热性能,且最终的年综合费用优于其他文献报导的数据,验证了该方法的有效性。 展开更多
关键词 温差均匀性原则 换热网络 夹点
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一维换热器中温差场均匀性原则的证明 被引量:42
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作者 宋伟明 孟继安 +1 位作者 梁新刚 李志信 《化工学报》 EI CAS CSCD 北大核心 2008年第10期2460-2464,共5页
The uniformity principle of temperature difference field is a phenomenological principle,which has not been theoretically proved.For one-dimensional two-and three-stream heat exchangers,the extremum principle of entra... The uniformity principle of temperature difference field is a phenomenological principle,which has not been theoretically proved.For one-dimensional two-and three-stream heat exchangers,the extremum principle of entransy dissipation was used to optimize the heat transfer process by variational calculus.It was indicated that the temperature difference field between the hot and cold fluids should be completely uniform if the entransy dissipation reached a minimum for a given heat duty,or if the heat duty reached a maximum for a given entransy dissipation.So,the uniformity principle of temperature difference field of heat exchangers was primarily proved. 展开更多
关键词 换热器 温差均匀原则 火积耗散极值原理
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多股流换热器设计的量纲1温差场均匀性优化因子 被引量:14
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作者 吕岩岩 崔国民 +1 位作者 郭佳 李美玲 《化工学报》 EI CAS CSCD 北大核心 2007年第10期2469-2473,共5页
The concept of dimensionless temperature-difference uniformity optimization factor was proposed.The application of this factor to path arrangement was studied.The study showed that dimensionless temperature-difference... The concept of dimensionless temperature-difference uniformity optimization factor was proposed.The application of this factor to path arrangement was studied.The study showed that dimensionless temperature-difference uniformity optimization factor was an effective evaluation criterion of path arrangement of multi-stream heat exchangers and the design of multi-stream heat exchangers could be guided by this factor. 展开更多
关键词 温差均匀优化原则 多股流换热器 通道排列
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