Enhancement of Heat Transfer with Horizontal Promoters

Abstract

The installation of adiabatic horizontal partition plates between fins at constant intervals has been investigated. Both the partition plate height and the pitch values, the parameters used for the computation, affect the magnitude of the local heat transfer coefficient. Exceeding certain values for the height of the partition plates and the pitches, transition to turbulence has been observed. Since the plates are adiabatic they did not work as extended heat transfer surfaces but as promoters. Thus, the promoters redirecting the flow can be used to enhance the heat transfer in both laminar and turbulent cases. In this study, the flow and temperature fields around the plates have been computed numerically and a correlation between the partition plate height, the pitch and the heat transfer performance has been obtained.