Record number :
2338497
Title of article :
Numerical and experimental investigation of heat transfer behavior in a round tube with the special conical ring inserts
Author/Authors :
Anvari، نويسنده , , A.R. and Javaherdeh، نويسنده , , K. and Emami-Meibodi، نويسنده , , M. and Rashidi، نويسنده , , A.M.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
4
From page :
214
To page :
217
Abstract :
In the present study an experimental investigation was carried out in order to find the role of the conical rings for the heat transfer enhancement and pressure drop change in a pipe with constant heat flux boundary condition. The conical rings were placed in two different arrangements: converging conical ring (CR array) and diverging conical ring (DR array). Also numerical study was performed through Computational Fluid Dynamics (CFD) calculations. The CFD predictions show suitable agreement with the experimental data of Nusselt number but overestimate pressure drop values. The predictions and the experimental results show that in the case of water as working fluid (despite air as working fluid), the conical ring inserts have an unfavorable effect on the enhancement efficiency of the heat-transfer in the heat exchangers.
Keywords :
Conical rings , Heat transfer enhancement , Nusselt number , Pressure drop , CFD
Journal title :
Energy Conversion and Management
Serial Year :
2014
Link To Document :
بازگشت