基于边界层理论和完整的边界条件，采用Collocation方法，推导出了沿倾斜壁面下降的在蒸发、等温和冷凝状态下普通适用的二维降膜拜表面波扰动时域演化方程， 并分析了不同因素的影响。结果表明：蒸发不利于稳定，冷凝有利于稳定， 在蒸发状态下，热毛细力导致其失稳，在冷凝状态下，则促进其稳定；表面张力不从有促进流动稳定的作用，液膜的稳定性随倾角和雷诺数的增大逐渐减小，随Ka数的增大逐渐加强；在小雷诺数下，液膜的稳定性主要取决于蒸汽压力和热毛细力的变化，在高雷诺数下，则取决于惯性力；流体物性和壁面倾角在一整个雷诺数范围内对液、膜的稳定性起着非常重要的作用。

深入研究了某热电厂450t/h循环流化床锅炉运行中炉膛布风板严重漏渣的问题，根据布风板稳定运行的基本原理以及锅炉结构和实际运行数据，对炉膛布风板的漏渣原因进行了理论分析，计算了布风板当量直径与床层高度的比值对流化床临界压降的影响，合理地解释了漏渣的机理，并计论了可能存在的炉膛布风板设计和运行上的原因。

电站锅炉煤粉燃烧过程中，煤粉着火前期的升温速率可达104K/s。而且煤粉在着火前期的升温状态直接影响到煤粉挥发份的释放速度和挥发份成分，进而影响到煤粉颗粒的着火和燃烧。该文针对开煤颗粒快速升温过程中非傅立叶导热效应，利用热波模型D-P-L模型对快速升温过程中煤颗粒的温度场时行的数值模拟，与实测结果进行了比较。并发现对于电站锅炉所燃用煤粉的粒径范围，在煤粉着落火前的升温过程中考虑非傅立叶导热应是十分必要的。

基于回转式空气预热器受热面积灰程度与烟气侧流动阻力间的依赖关系其相关影响因素，提出了折算压差的概念。推导了保佑灰监测的计算摸型。根据发电机组计算机数据采集系统（DAS）烟气侧实时检测的烟气侧压差等到参数，实现了300MW燃煤电站锅炉回转式究气预热器积灰状态监测。

提出了一种计算高温对流受热面管壁最高温度的校核算法，该方法基于局部能量和质量平衡的热力约束条件，与以往算法的主要区别是具有可校验性，因此计算结果更接近实际情况。文中叙述了该算法的原理，并以一实例说明其计算步骤，对计算的结果进行了讨论。该算法对改进高温对流受热面的壁温设计方法以及运行中壁温监测具有重要的实际价值。

以烟煤和褐煤混煤的超细煤粉件为再燃燃料，用N2、O2、CO2、NO配制模拟烟气，在立式携带流反应器巾进行了煤粉再燃还原NO的实验，研究了超细煤粉的细度对炉内1300℃高温烟气中再燃还原NO的影响。结果表明：①超细煤粉在再燃区内最佳停留时间约为0.8s：②NO的还原效率随着超细煤粉细度提高而增大；③在再能燃料比为20%～25%、再燃区的初始氧浓度为4%～6%的工况范围内，煤粉细度对NO还原效率的影响显著；④在保证一定的NO捧放浓度水平的情况下，使用较细的超细煤粉作为再燃燃料时，可以减少再燃燃料的投入量。

A novel method for analyzing the heating of coal particles in a coal powder-laden jet in the near-burner region is proposed. This method takes into accout both the delay due to coal paricle unsteady heating and the induction period needed for the coal particle to ignite from the practical engineering point of view. A review of the flow and heating of coal partcles is preseted. The principle and analysis procedures for estimating the ignition heat and the heat balance are oulined. The advantage of the propsed method over the previous analyzing method which is based on the steady-state heat balance is also discussed. The influncing trends of various factors on the results are calculated and drawn in a group of diagrans. The calculating procedure is demonstrated by using an industrial swirl burner as data source. The predicted hot gases recirculating ratio is in geeral agreenent with the measurements on the physical model. This study offers a useful reference in engineering practice for improving burnher design and performance.

The evolution of the suface waves for vertical free-falling films with Reynolds number ranging from 400to 5,100 was measured using multiple-point conint conductance sensors and a computer-based data acquisition system. The Physieal and mathematieal models describing the free-falling turbulent wavy films with the free surface boundary are presented. The governing equations are solved numerically in the film waves based on the coordinate transformation of the measured time-dependent film thickess data. The results show that the evolution of the surface waves has a remarkably nonlinear nature. The hydyrodnamics and velocity profiles at the wave front, the wave crest, and the wave back for the soliary waves indicate significant effects of the soliary surface waves with interior reeirculation flow on heat and mass transfer enhancement. A correlation for an average heat transfer coefficient is proposed as a function of the Reynolds and Prandtl numbers based on the measurements.

According to the heat balance principle, the boiler thermal calculation model based on the on-line operating data is presented. The on-line data filtering pretreatyment are built into the system. Effect of coal and boiler load variation are also taken into account. From the point of ecoomic operation of the unit, adequate detenmination of the desired cleaning factors are discussed in detail. This paper presents the design and implementation of an ash monitoring and sootblowing advisosry system for the 300 MW coal-fired boiler in Hengshui Power Station