The objective of this article is to study the work carried out in heat transfer augmentation
using active and passive techniques. A comprehensive summary of the work is highlighted …

The development of innovative heat exchangers with improved heat transfer performance is
an important concern for heat transfer applications. The use of passive techniques such as …

In order to increase the performance of a heat exchanger flowing ethylene glycol (EG) and
water (W) mixtures, the effects of different twisted tapes on heat transfer and flow …

The purpose of this study was to experimentally investigate the heat transfer and pressure
drop characteristics in a smooth circular tube with alternating clockwise and counter …

Supercritical and trans-critical carbon dioxide cycles are widely used for refrigerators, heat
pumps and power plants, of which the heat exchangers are key components. This article …

One of the techniques used for heat transfer enhancement is inserting conical rings inside
the tube to act as turbulators. In the present work, the performance of these conical inserts is …

Numerical analysis of the thermal and fluid behaviors of the tubes with multi-channel twisted
tapes has been investigated under constant wall temperature condition. The multi-channel …

In the presented experimental study, twelve different double-sided curved blade vortex
generators were produced at two blade angles (15° and 30°) based on the turbulator blade …

The present work presents the thermo-hydraulic characteristics in the heat exchanger tube
inserted with multiple-twisted tapes (M-TT). Multiple-twisted tapes consisted of a larger …

The purpose of this study was to experimentally investigate the heat transfer and pressure
drop characteristics in the transitional flow regime of twisted tape inserts in a circular tube …