Heat Transfer from Tubes in Crossflow

Abstract

Recent accelerated development of science and technology has revealed a number of new problems in the field of heat transfer of tubes in cross flow. The fast growth of the chemical and power industries and the emergence of some new branches of engineering caused an increased interest in heat transfer in flows of viscous fluids at higher Prandtl and Reynolds numbers. This chapter focuses on important problems of heat transfer and the hydraulic drag of tubes, and in particular, with the heat transfer of single tubes, banks of tubes, and systems of tubes in cross flow. The chapter also discusses the influence of the physical properties of fluids on heat transfer. Extensive experimental data is analyzed and banks of tubes of various arrangements and a single tube in cross flow in the range of Prandtl number from 0.7 to 500 and that of Reynolds number from 1 to 2 x l0 6 are investigated. Furthermore, heat transfer is considerably influenced by the flow regime around the tube, while flow past banks of tubes is one of the most complicated problems of practical importance. Knowledge of these processes enables more extensive studies of heat transfer.