• Himanshu Newaskar
• Nikhil Nadgauda
• Prof. Sameer Bhosale

This paper presents an experimental investigation carried out for heat transfer enhancement with the help of two shapes of ribs for heat exchanger application. The aim of project is to examine effect of rib & groove arrangement on forced convection setup. The experiment is performed on flat plate fitted with reverse boot shaped rib and funnel shaped rib with rectangular grooves, having width ‘w’, pitch ‘p’ and rib height ‘e’. Numerically by taking pitch ratios of 6,8, and 10 simulation was done, but it was found that pitch ratio of 6 gives the best performance. The pitch ratio of 6 was kept same for funnel shape as well as for reverse boot shaped rib. Also, pressure drop was measured. A uniform heat flux of 800W /m^2 using a flat type heater. With the help of 6 thermocouples temperature was measured at 6 different places on ribs. The Reynolds no. is varied in range of 20000 to 30000 at constant heat flux. Numerically, Nusselt no. was enhanced by 16% for funnel shaped rib and by 6% for reverse boot shaped rib when compared to flat plate. Also, in case of friction factor it was enhanced by 49% for funnel shaped rib and by 9% for reverse shaped rib when compared to flat plate. By experiment, it was found that Nusselt No. was enhanced by 11.8% for funnel shaped rib and by 5% for reverse boot shaped rib when compared to flat plate. Also, in case of friction factor it was enhanced 35.7% for funnel shaped rib and by 7% for reverse boot shaped rib when compared to flat plate. Thus, the results show that the funnel shaped rib with rectangular groove gives best performance and has significant enhancement as compared with flat plate.

Rib Shape, Rectangular Grooves, Heat Transfer Enhancement

"Evaluation of Heat Transfer Performance by using Non-Conventional Shapes Of Ribs", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.195-201, April-2019, Available :http://www.jetir.org/papers/JETIR1904O30.pdf

"Evaluation of Heat Transfer Performance by using Non-Conventional Shapes Of Ribs", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp195-201, April-2019, Available at : http://www.jetir.org/papers/JETIR1904O30.pdf