TY  - JOUR
TI  - NUMERICAL EVALUATION OF THERMO-HYDRAULIC PERFORMANCE INDEX OF A DOUBLE PIPE HEAT EXCHANGER USING DOUBLE SIDED LOUVERED WINGLET TAPE
AB  - The decade has witnessed great importance of numerical techniques for scientists and researchers in decidingthe correctness, stability, and reliability of new designs. In the present study a numerical technique has beenimplemented to investigate the thermo-hydraulic performance of the Louvered winglet tape inside the tube section ofthe double pipe heat exchanger. The Louvered winglet tape has been examined with the slope angle of 50, 100, 150and 210 to study their thermal characteristics. The Reynolds number 4000-30000 was examined on slope angle of 50,100, 150 and 210 to study their flow characteristics in the turbulent domain. A smooth pipe was examined to evaluateheat transfer characteristics in terms of Nusselt number and friction coefficient over augmented tube with Louveredwinglet tape. The results show a satisfactory performance of Louvered winglet tape over the smooth tube with a similartrend of friction factor, Nusselt number, and thermo-hydraulic performance index (THPI). The percentage of incrementof the Nusselt number of the results is found to be 237.04%, 258.4%, 275.11%, and 289.72% when compared to smoothpipe with respect to slope angle of 50, 100, 150 and 210, respectively. The amount of increase in the friction factor incomparison with plain tube is 5.13, 6.73, 8.33, and 11.73 times of that of smooth pipe with respect to slope angle of50, 100, 150 and 210, respectively. The Louvered winglet tape with slope angle 150 has shown to be promising withrespect to higher THPI when considering with other slope angle of 50, 100, and 210. The maximum THPI of 1.85 wasobtained for slope angle 150 at Re 12000. Similarly, the THPI values for other slope angle 50, 100, and 210 are 1.71,1.78 and 1.69. In addition to better performance the Louvered winglet tape can be easily fabricated and adapted for awide variety of heat transfer industries.
AU  - R, Thejaraju
AU  - Bannur Subbanna, Dayananda
AU  - S H, Dr.Manhunath
AU  - GİRİSHA, Dr.GIRISHA.K.B
PY  - 2020
JO  - Journal of Thermal Engineering
VL  - 6
IS  - 5
SN  - 2148-7847
SP  - 843
EP  - 857
DB  - TRDizin
UR  - http://search/yayin/detay/416997
ER  -