Enhancements Of Heat Transfer Nanofluid Flow In Circular Pipe With Twisted Tape Inserts: Review

Heat transfer improvement in circular pipe by using nanofluid and twisted tape is presented in this review paper. Experimental and numerical studies are incorporated involving both the range of turbulent and laminar flow. Effect of type and volume fraction of nanofluid on performance of heat transfer was referred along with the length and twist ratio of the tape through the pipe on heat transfer rate and pressure drop. Increase of volume fraction of nanofluid and Reynolds number leads to enhancement of heat transfer rate. The obtained results indicate a good agreement between the experimental and numerical studies. The Maximum of Nusselt number obtained by using twist tape through the pipe which created recirculation flow. The augmentations of heat transfer become significant by using both nanofluid flow instead of normal fluid and insert of the tape through the passage of pipe.