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首页> 外文期刊>Annals of nuclear energy >Boiling heat transfer and dryout in helically coiled tubes under different pressure conditions
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Boiling heat transfer and dryout in helically coiled tubes under different pressure conditions

机译：螺旋盘管在不同压力条件下的沸腾传热和干透

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A helically coiled once-through steam generator has been used widely during the past several decades for small nuclear power reactors. The heat transfer characteristics and dryout conditions are important to optimal design a helically coiled steam generator. Various experiments with the helically coiled tubes are performed to investigate the heat transfer characteristics and occurrence condition of a dryout. For the investigated experimental conditions, Steiner-Taborek's correlation is predicted reasonably based on the experimental results. The pressure effect is important for the boiling heat transfer correlation. A boiling heat transfer tends to increase with a pressure increase. However, it is not affected by the pressure change at a low power and low mass flow rate. Dryout occurs at high quality test conditions investigated because a liquid film on the wall exists owing to a centrifugal force of the helical coil.
机译：在过去的几十年中，螺旋盘绕式直流蒸汽发生器已广泛用于小型核动力反应堆。传热特性和变干条件对优化设计螺旋盘绕蒸汽发生器很重要。使用螺旋盘管进行了各种实验，以研究传热特性和变干的发生条件。对于研究的实验条件，根据实验结果可以合理地预测Steiner-Taborek的相关性。压力效应对于沸腾传热相关性很重要。沸腾的热传递趋于随压力增加而增加。但是，它不受低功率和低质量流量下压力变化的影响。在研究的高质量测试条件下会发生变干，这是因为由于螺旋线圈的离心力而在壁上存在液膜。

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