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为了对高粘性流体在有螺旋绕丝插件的纵向内肋管中的强化对流换热问题进行研究,采用直径(e)及螺距(p)各不相同的8种规格绕丝,得到相应的管内传热及阻力准则关系式;同时,基于增大管内对流换热、减小相应阻力的原则,对试验结果进行了分析。本试验在新建的闭式油-水试验回路上进行,如图1所示。试验工质采用25~#变压
In order to study the problem of enhanced convective heat transfer of highly viscous fluids in longitudinal ribbed tubes with helical wrap-around inserts, 8 gauge wraps, each with a different diameter (e) and pitch (p), were used to obtain the corresponding tube Heat transfer and resistance criteria; at the same time, based on the principle of increasing the convective heat transfer in the tube and reducing the corresponding resistance, the experimental results were analyzed. The test in the new closed oil - water test circuit, shown in Figure 1. Test working fluid using 25 ~ # transformer