Abstract:
For the next generation of nanofluids, carbon nanomaterials are of tremendous
interest. CnT and GnP, in particular, are extremely thermally conductive, and their
usage in heat transfer nanofluids is a significant field of study. Using a concentric
tube annular heat exchanger in the same operating circumstances, the heat transfer
performance of GnP-nanofluid and MWCNT-nanofluid was investigated in this study.
In the inner tube, the manufactured nanofluid flowed as a hot fluid in the reverse
direction of a colder water flow in the annulus tube. The flow rate (1.5 L/min – 2.5
L/min) and concentration (0.01% – 0.35%) of nanofluid were varied in the
experiment. At the same flow rates and nanofluid concentrations, the heat transfer
coefficient of GnP-nanofluid was found to be greater than that of MWCNT-nanofluid.
When an appropriate volumetric concentration is attained in both nanofluids, the
favorable influence on heat transfer performance increase is at its peak. In comparison
to MWCNT, our research reveals that GnP can increase heat transfer coefficient at
lower volumetric concentrations and flow rates
Description:
Supervised by
Dr. Arafat Ahmed Bhuiyan,
Associate Professor,
Department of Mechanical and Production Engineering (MPE),
Islamic University of Technology (IUT),
Board Bazar, Gazipur-1704, Bangladesh.
This thesis is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Mechanical and Production Engineering, 2022.
