CAJ | 학술논문

为解决三分仓空气预热器的热力计算问题,通过建立三分仓微元体模型,并考虑流体温度和金属蓄热板竖直切面平均温度的非线性特性,提出将一、二次风按照两分仓方法进行计算的改进算法,得到出口空气温度的微分解析式.实例计算表明：改进方法具有较高的精度;在空气预热器正转和反转情况下,该方法均适用;改进方法与文献[6]中方法计算得到的正、反转排烟温度一致.
위해결삼분창공기예열기적열력계산문제,통과건립삼분창미원체모형,병고필류체온도화금속축열판수직절면평균온도적비선성특성,제출장일、이차풍안조량분창방법진행계산적개진산법,득도출구공기온도적미분해석식.실례계산표명：개진방법구유교고적정도;재공기예열기정전화반전정황하,해방법균괄용;개진방법여문헌[6]중방법계산득도적정、반전배연온도일치.
To perform thermal calculation for tri-sectional rotary air heaters,a differential element model has been set up.Considering the non-linear characteristics of fluid temperature and the mean temperature on vertical section of metallic heat accumulation plate along the rotational direction,an analytical expression for the outlet air temperature is obtained based on the method for dual-sectional rotary air preheaters.Calculation examples prove the improved method to be of high precision,which is applicable to both forward and reverse rotation conditions.Outlet flue gas temperature respectively calculated with the improved method and the method proposed in reference [6] agree well with one another under both forward and reverse rotation conditions.