The heat transfer and pressure drop characteristics of the finned tube banks in forced convection (effects of fin height on heat transfer characteristics)

Abstract

In recent years the requirement for the reduction of energy consumption has been increasing to solve the problems of global warming and the shortage of petroleum resources. For example, in the power generation field, as thermal power generation occupies 60% of the power generation demand, considerable improvement of thermal efficiency is required. This paper describes the heat transfer characteristics of finned tube banks used for the heat exchanger in thermal power generation that were clarified by testing serrated finned tube banks with different fin heights for improved higher heat transfer and conventional spiral finned tube banks with different fin height. Then an equation to predict the heat transfer coefficient which is necessary for the design of the heat exchanger was proposed.

A numerical study of flow behavior in the shell and helical finned‐tube heat exchanger

“…Kawaguchi et al 35 conducted experimental work to explore the effect of fin height on the heat transfer and pressure drop inside the straight tube with spiral and serrated fins. They found that the fin height has different effects on the heat transfer coefficient.…”