In this experimental investigation, our primary objective was to assess the collective impact of hyperbolic-cut depth and width cuts on twisted tape (TT) inserts within a heat exchanger tube (HET) operating under laminar flow conditions encompassing a Reynolds number ( \(Re\) ) range from 100 to 1500. The insert utilized featured hyperbolic cuts along the edges of the tape. The hyperbolic-cut depth and cut width were varied between 3 mm ≤ b ≤ 12 mm and 10 mm ≤ c ≤ 16 mm for a constant twist ratio. To minimize inaccuracies and enhance automation, Internet of Things (IoT) methodology has been implemented to monitor supplementary input and output variables and measure flow rates. This method produced more dependable outcomes by reducing the need for human involvement. The results of the current investigation suggest that specific alterations to the TT configuration resulted in a noteworthy enhancement in heat transfer efficiency, friction factor, and overall thermohydraulic performance metrics. The enhancements were notable, showcasing a rise in the Nusselt number varying from 43.42 to 529.50% and elevation in the friction factor spanning 136.74–738.40%, respectively, compared to the plain tube. At \(Re\) = 1500, \(c\) = 16 mm yields the best performance of 4.43. Moreover, an exhaustive examination uncovered outstanding performance across all \(Re\) compared to prior research. In addition, empirical correlations have been established to predict the Nusselt number and friction factor. Furthermore, research efforts were dedicated to investigating the flow and thermal behaviors through experimental work to enhance our comprehension of heat transfer mechanisms.
