Experimental investigation of performance improvement of double-pipe heat exchangers with novel perforated elliptic turbulators

ME Nakhchi, M Hatami, M Rahmati - International Journal of Thermal …, 2021 - Elsevier
In the present study, heat transfer and thermal efficiency of double-pipe heat exchangers
with novel Double-Perforated Inclined Elliptic (DPIE) turbulators were experimentally …

Numerical investigation of rectangular-cut twisted tape insert on performance improvement of heat exchangers

ME Nakhchi, JA Esfahani - International Journal of Thermal Sciences, 2019 - Elsevier
A numerical analysis has been performed to investigate the flow structure and thermal
hydraulic performance of turbulent flow through circular tube equipped with twisted tapes …

Thermohydraulic performance and entropy generation in heat exchanger tube with louvered winglet tapes

P Promvonge, S Skullong - International Journal of Thermal Sciences, 2022 - Elsevier
The present article concerns with thermohydraulic performance, flow friction and entropy
generation analysis in a heated tube contained with louvered winglet tape (LWT). The …

Effects of trapezoidal and twisted trapezoidal tapes on turbulent heat transfer in tubes

AH Altun, H Nacak, E Canli - Applied Thermal Engineering, 2022 - Elsevier
Trapezoidal and twisted trapezoidal tape elements which are used for heat transfer
enhancement in tubes are experimentally investigated. The effects of the tapes on heat …

Entropy generation and thermal performance of tubular heat exchanger fitted with louvered corner-curved V-baffles

N Jayranaiwachira, P Promvonge, C Thianpong… - International Journal of …, 2023 - Elsevier
The current article deals with an experimental study on entropy generation analysis and
thermohydraulic performance of a uniform heat-flux tube equipped with louvered corner …

Investigation of effects on turbulent heat transfer of twisted wavy tape elements in the tube

AH Altun, S Ors, S Dogan - International Journal of Thermal Sciences, 2023 - Elsevier
In this study, the turbulence effects created by the twisted wavy tape elements placed inside
a plain tube were investigated with experimental results. Changes in heat transfer and …

CFD approach for two-phase CuO nanofluid flow through heat exchangers enhanced by double perforated louvered strip insert

ME Nakhchi, JA Esfahani - Powder technology, 2020 - Elsevier
In this study, turbulent flow characteristics of CuO-water nanofluid through heat exchanger
pipe enhanced with louvered strips are numerically investigated. Nanoparticles volume …

An experimental and numerical study on the laminar heat transfer and flow characteristics of a circular tube fitted with multiple conical strips inserts

P Liu, N Zheng, F Shan, Z Liu, W Liu - … Journal of Heat and Mass Transfer, 2018 - Elsevier
In this work, numerical simulations on the flow structures and heat transfer enhancement of
laminar flow in a heat exchanger tube fitted with multiple conical strips inserts have been …

Numerical study of turbulent flow inside heat exchangers using perforated louvered strip inserts

ME Nakhchi, JA Esfahani, KC Kim - International Journal of Heat and Mass …, 2020 - Elsevier
Numerical simulations have been performed to analyze the turbulent flow characteristics
and thermal performance of fluid flows inside heat exchangers fitted with novel perforated …

Experimental and numerical heat transfer study of turbulent tube flow through discrete V-winglets

P Promvonge, P Promthaisong, S Skullong - International Journal of Heat …, 2020 - Elsevier
The article presents an experimental and numerical investigation on heat transfer
augmentation in a tubular heat exchanger inserted with discrete-V-winglet (DW) tape. Air …