王斯民,王萌萌,顾昕,简冠平,文键

• 1:西安交通大学化学工程与技术学院
• 2:西安交通大学能源与动力工程学院

摘要(Abstract)：

首次应用火积理论对螺旋折流板换热器进行优化结构分析。选取50%搭接的18°和27°的螺旋平面折流板换热器和改进的螺旋折面折流板换热器作为研究对象,且分别应用传热性能综合评价(PEC)准则和火积耗散理论对实验数据进行了分析。结果表明:随着有效度和传热单元数的增加,火积耗散数均减小。18°螺旋折流板换热器的性能明显优于27°螺旋折流板换热器,且在有效度或传热单元数相同的情况下,改进后的螺旋折面折流板换热器的性能也均优于螺旋平面折流板换热器。火积耗散理论与PEC准则分析结果的一致性,证明了火积理论对螺旋折流板换热器性能分析的适用性。同时发现,传热火积耗散数的大小是阻力火积耗散数的上千倍,说明传热火积耗散在总火积耗散中占重要地位。这对火积理论应用于螺旋折流板换热器的传热和阻力性能研究具有重要意义。

关键词(KeyWords)： 螺旋折流板换热器;传热;优化;传热性能综合评价准则;火积耗散数

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51106119,81100707);; 教育部博士点基金资助项目(20110201120052);; 中央高校基本科研业务费专项基金资助项目

作者(Author): 王斯民,王萌萌,顾昕,简冠平,文键

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