Thermodynamic Performance Analysis of Two Connection Methods of Tube Type Double Air Preheaters in Thermal Power Plant Boiler

摘要

The different connection structures between the upper and lower parts of tube type double air preheaters in boilers affect the temperature field distribution in the upper air preheater and therefore have an effect on the efficiency of heat exchange. Without talking about the advantages and disadvantages on structure of two different connection methods, the paper concerns to analyze their thermodynamic features and then evalautes the two differnet connection methods.