Passive techniques for the enhancement of convective heat transfer in single phase duct flow

32nd UIT (Italian Union of Thermo–fluid-dynamics) Heat Transfer Conference

物理学;力学

Rainieri, S.^1,2 ; Bozzoli, F.^1 ; Cattani, L.^1

Department of Industrial Engineering, University of Parma, Parco Area delle Scienze 181/A, Parma

I-43124, Italy^1

SITEIA.PARMA Interdepartmental Centre, University of Parma, Parco Area delle Scienze 181/A, Parma

I-43124, Italy^2

关键词: Causal relationships;    Compound heat transfer enhancement;    Convective heat transfer;    Experimental campaign;    Heat transfer surfaces;    High viscosity fluids;    Passive technique;    Single phase heat transfers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/547/1/012002/pdf
DOI  :  10.1088/1742-6596/547/1/012002

学科分类：力学，机械学

来源: IOP

【 摘 要 】

This review presents the main results of the experimental campaign on passive techniques for the enhancement of forced convective single phase heat transfer in ducts, performed in the last years at the Laboratory of the Industrial Engineering Department of the University of Parma by the Applied Physics research group. The research was mainly focused on two passive techniques, widely adopted for the thermal processing of medium and high viscosity fluids, based on wall corrugation and on wall curvature. The innovative compound heat transfer enhancement technique that couples together the effect of wall curvature and of wall corrugation has been investigated as well. The research has been mainly focused on understanding the causal relationship between the heat transfer surface modification and the convection enhancement phenomenon, by accounting the effect of the fluid Prandtl number. The pressure loss penalties were also evaluated. The principal results are presented and discussed.