High Impact Factor : 4.396 icon | Submit Manuscript Online icon |

NUMERICAL INVESTIGATION OF SOLAR AIR HEATER DUCT USING BROKEN ARC SHAPED RIBS COMBINED WITH STAGGERED RIB

Author(s):

SANJU PAHARE , SCOPE COLLEGE OF ENGG BHOPAL; Dr. S.K. Nagpure, SCOPE COLLEGE OF ENGG. BHOPAL

Keywords:

Reynolds Number, Heat Transfer, Pressure Drop, Duct

Abstract

Artificial roughness in the form of repeated ribs is one of the effective way of improving the performance of a solar air heater ducts. In this paper the CFD analysis on heat transfer and friction in rectangular ducts roughened with broken arc-rib roughness combined with staggered rib piece has been presented. The rib roughness has relative gap width (g/e) was varied from 0.5 to 2.5 and other parameter are constant. The effects of relative gap width on Nusselt number, friction factor and thermo-hydraulic performance parameter have been discussed and results compared with smooth duct and continuous arc rib roughened duct under similar conditions. The rough ribs were efficient enough to transfer the desired heat, but they are not economical and are very complex in design and construction. Whereas, the Circular ribs with different relative gap width gives more area of contact. So, there is enough time to transfer the heat from the ribs to the passing air which touches the ribs and the heat transfer takes place efficiently. It is found that the maximum heat transfer and friction characteristic at a relative gap width of 1.0.

Other Details

Paper ID: IJSRDV6I110252
Published in: Volume : 6, Issue : 11
Publication Date: 01/11/2019
Page(s): 392-397

Article Preview

Download Article