This work focuses on boiling heat transfer studies during cooling liquids flow (FC-72, HFE-649, HFE-7000 or HFE-7100) along a single minichannel of 1.7 mm depth, vertically or horizontally oriented. The temperature of the outer smooth side of the plate was measured by infrared thermography. The observations of the flow structures were carried out on the enhanced side of the plate contacting fluid. The heat transfer coefficient (HTC) on the enhanced plate–fluid contact surface was computed from the Robin boundary condition. The inverse heat conduction problem in the heated wall was solved by the Finite Element Method with the shape functions based on the Hermite interpolation and the Trefftz functions. The results were presented as relationships between HTC and the spatial variable referred to the flow direction at subcooled and saturated boiling and as boiling curves. Mean relative errors of HTC were determined. Two-phase flow patterns were shown and discussed. Selected correlations for boiling heat transfer have been used in calculations for comparison between experimental and predicted Nusselt numbers. The smallest mean absolute percentage error of the Nusselt number was achieved for Mikielewicz J. correlation at subcooled boiling. At saturated boiling no satisfactory results were achieved. Therefore, own correlation was proposed.

这项工作着重于冷却液（FC-72，HFE-649，HFE-7000或HFE-7100）沿1.7 mm深度的单个微型通道（垂直或水平方向）流动期间的沸腾传热研究。板的外部光滑面的温度通过红外热成像法测量。在板接触流体的增强侧进行流动结构的观察。从Robin边界条件计算出增强的板液接触表面上的传热系数（HTC）。通过基于Hermite插值和Trefftz函数的形状函数的有限元方法解决了加热壁中的导热逆问题。结果表示为HTC与空间变量之间的关系，该空间变量指的是过冷和饱和沸腾时的流向以及沸腾曲线。确定了HTC的平均相对误差。显示并讨论了两相流模式。在计算中已使用沸腾传热的选定相关性进行了计算，以比较实验值和预测值Nusselt数字。Mikielewicz J.相关系数在过冷沸腾下获得了最小的Nusselt数平均绝对百分比误差。在饱和沸腾下没有获得令人满意的结果。因此，提出了自己的相关性。