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建立了垂直管吸收器的分布参数动态模型 ,运用该模型计算分析了吸收器的启动特性 ,得出了各参数沿管长的分布规律及吸收器出口宏观参数的变化规律 ,并进行了实验验证 .结果表明 ,吸收器垂直管的顶部在 2 0 %的长度内不存在吸收过程 ,溶液仅进行冷却降温 ;垂直管吸收器的冷却负荷约占机组总冷却负荷的 70 % ,表明垂直管吸收器的吸收效果很好 ,优于水平管 ;在机组的启动阶段 ,吸收器出口溶液的浓度存在一个先升后降的过程
The dynamic model of the distribution parameters of vertical tube absorber was established. By using this model, the starting characteristics of the absorber were calculated and analyzed. The distribution rule of the parameters along the tube length and the variation rule of macroscopic parameters of the absorber outlet were obtained and verified by experiments The results show that there is no absorption process at the top of the vertical tube of 20% absorber and the solution is only cooled and cooled down. The cooling load of the vertical tube absorber accounts for about 70% of the total cooling load of the unit, Of the absorption effect is good, better than the level of the tube; in the start-up phase of the unit, the concentration of the absorber outlet solution there is a process of first and then drop