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前人关于蓄热式空气预热器热工计算的方法中均有一些假定条件 ,使之在计算传热系数时产生很大误差。这些方法中均未能提供蓄热填料和载热气体中的温度场资料 ,本文研究的模型特点为 :沿气流方向填料可分为几段 ;载热气体的流量是任意的 ,且与时间无关 ;载热流体在蓄热室之前的
There are some assumptions made by the predecessors in the thermal calculation of regenerative air preheaters, which make a great error when calculating the heat transfer coefficient. None of these methods provide any information about the temperature field in the thermal storage and heat transfer gases. The characteristics of the model studied in this paper are as follows: The packing can be divided into several sections along the airflow direction; the flow of the heating medium is arbitrary and time-independent ; Before the heat transfer fluid in the regenerator