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首页> 外文期刊>Applied Mathematical Modelling >Prediction Of Risers' Tubes Temperature In Water Tube Boilers
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Prediction Of Risers' Tubes Temperature In Water Tube Boilers

机译：水管锅炉中立管温度的预测

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摘要

A dynamic model is developed which enables the prediction of risers' tubes temperature of water tube boilers under various operating conditions. The model is composed of fluid dynamics model representing the fluid flow in the drum-downcomer-riser loop and a dynamic thermal model of the riser's temperature. The model gives a detailed account of the two-phase heat transfer process which takes place between the risers' inner walls and the water-steam mixture flow inside the tubes. The model is used to simulate various operational scenarios of water tube boilers. Results of the simulation provide insight into the dynamic interactions of the boiler's main variables including the drum pressure, water volume, steam quality and risers' temperature. Such a model is useful in checking operational scenarios before their actual plant implementation, can be a basis for developing boiler start up procedures and online temperature predictions to prevent eminent tube overheating.
机译：建立了一个动态模型，该模型能够预测各种操作条件下水管锅炉的立管温度。该模型由代表滚筒降液管-上升器回路中的流体流动的流体动力学模型和立管温度的动态热模型组成。该模型详细介绍了立管内壁与管内水蒸汽混合物之间发生的两相传热过程。该模型用于模拟水管锅炉的各种运行方案。仿真结果提供了对锅炉主要变量（包括汽包压力，水量，蒸汽质量和立管温度）的动态相互作用的深入了解。这种模型对于在实际工厂实施之前检查操作方案很有用，可以作为制定锅炉启动程序和在线温度预测以防止显着管过热的基础。

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