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Pool Boiling Heat Transfer to Phosphoric Acid Solutions

机译：池沸腾热传递至磷酸溶液

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Phosphoric acid is a weak electrolyte with complex physical properties. This complexity combined with its industrial importance has necessitated intensive studies into its heat transfer behavior. In this investigation, pool boiling heat transfer coefficients of phosphoric acid solutions have been measured over a wide range of acid concentrations. The effects of various operating parameters such as heat flux, temperature, and acid concentration have been investigated. Also, the bubble departure diameter and the number of active nucleation sites for phosphoric acid solutions are compared with those for pure water under identical conditions. A model was developed for pool boiling heat transfer of phosphoric acid solutions, which can easily be adapted for other weak electrolyte solutions. In this model, the correct boiling temperature at the vapor/liquid interface is determined rather than applying an arbitrary correction to the boiling heat transfer coefficient. The proposed model is confirmed by comparison between calculated and experimental data.
机译：磷酸是一种具有复杂物理特性的弱电解质。这种复杂性及其在工业上的重要性，使得必须对其传热行为进行深入研究。在这项研究中，已经在广泛的酸浓度范围内测量了磷酸溶液的沸腾沸腾传热系数。已经研究了各种操作参数（例如热通量，温度和酸浓度）的影响。同样，在相同条件下，将磷酸溶液的气泡离开直径和活性成核点的数量与纯水的气泡离开直径和活性成核位置的数量进行了比较。开发了用于磷酸溶液的池沸腾传热的模型，该模型可以轻松地适用于其他弱电解质溶液。在该模型中，确定汽/液界面处的正确沸腾温度，而不是对沸腾传热系数进行任意校正。通过比较计算数据和实验数据，证实了所提出的模型。

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