Effect of Twisted Tape on The Performance of Solar Collector

The working of a solar collector with a heat transfer enhancer in a flat plate solar collector is experimentally examined in this research. By minimizing the area between the fluid and the inner tube wall, which is maintained in the axial direction of the flow channel, the work's goal is to maximize convective heat transfer. In the current work, the twisted tape-type heat enhancers of various lengths and pitches are used and contrasted with one another, as well as plain tubes. The author examined different parameters such as HT coefficient, Nu, and instantaneous η in this work. The experimental findings showed that tape-induced swirl or vortex motion significantly impacts the increased HT rate of the twisted-tape inserts. Compared to plain tubes, full-length twisted tape inserts are found to enhance the heat transfer coefficient by a maximum of 175.7%, while full-length turbulators raise the nusselt number by a maximum of 178%.