A Review Paper on CFD Analysis of Tri-sector Air Preheater for different Primary Air Inlet Opening

Abstract

This paper presents working of tri-sector air preheter with performance analysis and optimization. The regenerative air preheater absorbs waste heat from flue gas. This absorbed heat transfers to cold air by means of continuously rotating heat transfer element of specially formed metal sheets. Tri-sector air preheater preheats the combustion air and primary air that is required to preheat & carry pulverized fuel to the burners. Tri-sector APH preheats secondary air for use combustion. The model enables studies of the flue gas flow through the preheater and the adjoining channels as well as the regenerative heat transfer and the optimization of pressure drop distribution in the matrix of the preheater for different primary air inlet opening.