Optimization Model And Experimental Research On Rectangular Fin Tube

The present paper describes current technologies and prospects of rectangular fin optimization. In order to find the best fin height and thickness on a given fin area, based on rectangular fin heat transfer equations, the mathematical model for optimizing fin size is presented. Maximum heat transfer is used as optimizing objective under the conditions of different given fin metal masses. A typical economizer retrofitting project is used for the model prediction demonstration. The calculation procedures are outlined and results are presented. Dependence of optimal fin size on flue gas velocity and contaminate coefficient is discussed.Based on the similarity principle, a self-designed heat transfer bench unit has been made. Air, as the working fluid, simulates the gas of economizer. The validity is testified by the results of experiment. The numerical examples are presented and compared with the corresponding theoretical solutions. All these work and conclusions will provide guidance for the practical application and development of rectangular fin.