The thermal energy exchange between a flowing fluid and its confining channel is a
ubiquitous process in modern society. To enhance the fluid-to-wall or wall-to-fluid heat …

Heat transfer, flow friction and thermal performance factor characteristics in a tube fitted with
delta-winglet twisted tape, using water as working fluid are investigated experimentally …

In the present study, the influences of twin-counter/co-twisted tapes (counter/co-swirl tape)
on heat transfer rate (Nu), friction factor (f) and thermal enhancement index (η) are …

An experimental and numerical study of turbulent convective heat transfer in a solar air
heater duct with winglet-type vortex generators (WVGs) placed on the absorber plate is …

Heat transfer, friction factor and enhancement efficiency characteristics in a circular tube
fitted with conical-ring turbulators and a twisted-tape swirl generator have been investigated …

Metallic inserts are well-recognized in modern research as efficient passive thermal
performance enhancement methods. However, only scarce studies examined conical rings …

The article presents an experimental study of turbulent heat transfer and flow friction
characteristics in a circular tube equipped with two types of twisted tapes:(1) typical twisted …

In this research, hydrothermal characteristics and energy efficiency of the water–Ag
nanofluid in a circular tube equipped with twisted conical strip inserts are investigated …

Effects of peripherally-cut twisted tape insert on heat transfer, friction loss and thermal
performance factor characteristics in a round tube were investigated. Nine different …

One of the challenges in the development of heat exchangers is to minimize their energy
consumption. This can be achieved by enhancing the heat transfer rate, which will boost the …