场协同原理在强化换热器传热中的应用与分析.pdf

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第 8 卷第 1 期制冷与空调

2 0 0 8 年 2 月 REFRIGERATION AND AIR - CONDITIONIN G 30 32
场协同原理在强化换热器传热中的2 应用与分析
李革1) ,2) ,3) 张丽2) ,3) 董晓巍3)
1) (辽宁省水产品加工及综合利用重点开放实验室)
2) (大连理工大学) 3) (大连水产学院)
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摘要以提高翅片管式换热器的换热性能为研究对象,根据场协同原理(在相同的速度和温度边界条件
下,对流换热2 的2性能取决于流体速度场与热流场协同的程度) ,将换热器的基管由圆管改为椭圆管来提高
换热器的换热性能。计算结果表明,其换热系数提高 15 % ,阻力系数降低 18 % ,对强化换热器的热力性能
有一定的参考价值。
关键词翅片管式换热器场协同原理传热系数热力学计算对流换热
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Study on heat transfer enhancement of heat exchanger
with f ield synergy principle
Li Ge1) ,2) ,3) Zhang Li2) ,3) Dong Xiaowei3)
1) ( Key and Open Laboratory of Aquatic Processing and Utilization of Liaoning Province)
2) (Dalian University of Technology) 3) (Dalian Fisheries University)
ABSTRACT To improve the heat transfer performance of finned tube heat exchanger , accord
ing to the field synergy principle ( under the condition of same speed and the temperature
boundaries , convective heat transfer is decided by synergy between the fluid speed field and
heats field) , utilizes the oval tube instead of the circle one. The calculation results indicate that
the heat transfer coefficient is increased by 15 % and the resistance coefficient is decreased by
18 % , it is an energy saving and availability method to enhance heat transfer coefficient of heat
exchanger.
KEY WORDS finned tube heat exchanger ; field synergy principle ; heat transfer coefficient ;