CAJ | 학술논문

本文以单相水为介质，对结构尺寸不同的3种扁管的换热与阻力特性进行了实验研究。并根据工程实际的需要，选用适当的方法对扁管在实验范围内的强化换热效率指标进行评价，确定了扁管的最佳工作区域。结果表明，扁管的管内换热系数明显高于光圆管的，换热系数最高可达光圆管的2.62倍，在换热面积和泵功率相同情况下，扁管最佳工作区域的换热量最高可达光圆管的2.2倍。
본문이단상수위개질，대결구척촌불동적3충편관적환열여조력특성진행료실험연구。병근거공정실제적수요，선용괄당적방법대편관재실험범위내적강화환열효솔지표진행평개，학정료편관적최가공작구역。결과표명，편관적관내환열계수명현고우광원관적，환열계수최고가체광원관적2.62배，재환열면적화빙공솔상동정황하，편관최가공작구역적환열량최고가체광원관적2.2배。
The experimental study of heat transfer and flow resistance characteristics of single phase water in three flat tubes with different structural dimensions was conduc-ted .At the same time , suitable criteria were selected to evaluate the heat transfer enhancement efficiency of flat tubes within the experimental scope and the optimal working region was determined .The results indicate that flat tubes can greatly enhance the single-phase turbulent flow heat transfer and the maximum heat transfer coefficient attains to 2.62 times of that in smooth round tube . The maximum quantity of heat transferred from flat tubes attains to 2.2 times of that in smooth round tube with the same heat exchange area and pump power .