In order to more accurately evaluate the operation and output characteristics of the solar chimney power plant integrated seawater desalination, a refined mathematical model for unsteady heat and mass transfer was built under consideration of the convection heat transfer mechanism of the collector, dewing phenomenon, and the disturbance to the hot airflow caused by the oblique-toothed flow channel boundary. The influence of nighttime dewing and humid environments on system performance was discussed. The results show that it is feasible and more appropriate to use the forced convection heat transfer coefficient of bellows to consider the influence of the oblique-toothed flow channel boundary; the refined mathematical model is also more accurate and reliable. Due to the effect of seawater heat storage, dewing has little effect on system performance, and the integrated system has a better anti-dewing negative impact characteristic. However, when the ambient humidity reached a higher level, dewing had a greater negative impact on freshwater production. The critical value of relative humidity for dewing to occur is 51 %. When the relative humidity increases from 45 % to 60 %, the daily utilization efficiency of solar energy decreases from 27.4 % to 22.5 %.

为了更准确地评价太阳能烟囱电站一体化海水淡化的运行和出力特性，在考虑集热器对流传热机理、结露现象和斜齿流道边界对热气流的扰动。讨论了夜间结露和潮湿环境对系统性能的影响。结果表明，采用波纹管强制对流传热系数来考虑斜齿流道边界的影响是可行的，也是比较合适的；完善的数学模型也更加准确可靠。由于海水蓄热作用，结露对系统性能影响不大，集成系统具有更好的抗结露负面影响特性。然而，当环境湿度达到较高水平时，露水对淡水生产的负面影响更大。发生结露的相对湿度临界值为 51%。当相对湿度从45%增加到60%时，太阳能的日利用效率从27.4%下降到22.5%。