【作者】 李晓燕； 李智； 张广宇； 闫泽生；

【机构】 哈尔滨商业大学土木与制冷工程学院；

【摘要】 本文通过实验的方法研究了一种新型波纹形内翅片换热管的对流换热和阻力特性,拟合了所测Re范围内对流换热和阻力实验关联式,并运用相同质量流量、相同泵功率、相同阻力降这三种准则比较了该翅片管与普通光管之间的传热效果。与类似的波纹管的换热效果进行了比较,结果表明,实验管具有较好的换热效果,特别是在较低Re条件下,效果更加明显。更多还原

【Abstract】 The characteristics of turbulent flow and heat transfer in tubes with a new type tubes with internal wave -like fins was investigated experimentally- The corresponding correlation for the friction factors and Nusselt numbers vs. the Reynolds numbers for the inner - fin - tube were obtained. The results of the inner - fin - tube were compared with that of the smooth tubes by the rules of the same quality flow, the same pump power, and the same pressure drop. It was found that the characteristics of heat transfer with the test - tubels better than that of the comparetube, especially when the Reynolds numbers is relatively tow.更多还原