强化传热效能的比熵产数工况评价方法  

ON-SPOT EVALUATION OF ENTROPY PRODUCTION RATIO UNDER HEAT TRANSFER INTENSIFICATION

作　　者：徐百平[1] 江楠[1] 雷鸣[2] 

机构地区：[1]华南理工大学工控系,广州510641 [2]四川联合大学食品系,成都610065

出　　处：《石油炼制与化工》2000年第6期46-50,共5页Petroleum Processing and Petrochemicals

基　　金：广东省自然科学基金!项目 (资助号 :970 5 3 5 )

摘　　要：针对换热器强化传热后工况变化的复杂性提出了比熵产数工况评价的方法 ,并推导得到易于计算的比熵产数表达式。在强化侧恒定压降的情况下 ,对环隙冷却水保持湍流 ,管内层流热油采用Kenics静态混合器强化传热的套管换热器进行了热力学完善性的评价分析 ,为工程实践设计优化提供了参考。In consideration of the complexity of the changeable conditions of the heat exchanger after heat transfer intensification, an on spot evaluation method for determining the entropy production ratio is presented. An entropy production ratio formula accessible to computation was derived. Under the condition that the flow pressure drop of the intensified fluid kept constant, and maintaining the shell pass cooling water in turbulence, while the tube pass hot oil under laminar flow was intensified by Kenics static mixer, the thermodynamic performance was evaluated. The evaluation provided reference to the optimization of engineering design.

关 键 词：比熵产数 工况评价 混合器 换热器 强化传热效能 

分 类 号：TQ013.1[化学工程]