两相闭式热虹吸管的强化传热

在两相闭式热虹吸管的沸腾段与冷凝段中分别插入内管形成新型结构.直观考察和传热实验表明,新结构的两相闭式热虹吸管操作稳定、传热系数高.本文考察了新型结构两相闭式热虹吸管的流体流动型态,并在Soliman冷凝传热模型的基础上,提出了环隙内蒸汽与冷凝液并流的冷凝传热模型,该模型的计算值与实验值比较,平均偏差为19.4%.

Heat Transfer Enhancement in A Two-Phase Closed Thermosyphon

An inner tube was inserted respectively into the boiling section and condensing section to form a new type of configuration of a two phase closed ther-mosypon. Visual observation and heat transfer experiments on the new two phase closed thermosyphon showed not only a better stability in operation, but also a higher heat transfer coefficient. A fluid flow physical model was proposed. On the basis of the Soliman condensing heat transfer model, a condensing model with vapor and liquid flowing corurrently in annulus was proposed and the mean deviation between the calculated values and the experimental values was 19.4%.