Thermal Performance Evaluation of a Tubular Heat Exchanger Fitted with Combined Basket–Twisted Tape Inserts

Features of the tubular type heat exchanger were examined experimentally in current study. A rig is fitted with a novel insert as negative transfer increase technique. The core fluid used air under steady flux and turbulent discharge state (6000 ≤ Re 19,500) conditions. Two augmentation inserts are employed; one basket turbulators utilized turbulator placed inside constant pitch ratio (PR = 150 mm), other together twisted tape that installed at turbulators. measurements illustrated Nusselt number (Nu) was found to be higher by about 131.8%, 169.5%, 187.7%, 206.5% comparison plain for combined basket–twisted y/w 6, 3, 2, respectively. highest thermal efficiency factor increased 1.63 times more elevated than simple on average, due binary basket-quirky strip twisting percentage equal 2 pumping energy. Further, practical correlations number, well friction characteristics, established presented.