Impact of nano additives in heat exchangers with twisted tapes and rings to increase efficiency: A review

YH Assaf, A Akroot, HA Abdul Wahhab, W Talal… - Sustainability, 2023 - mdpi.com
The heat exchanger is crucial to all systems and applications that use it. Researchers are
primarily focused on improving this component's thermal conductivity to improve its …

Thermal performance enhancement in flat plate solar collector solar water heater: a review

NI Shamsul Azha, H Hussin, MS Nasif, T Hussain - Processes, 2020 - mdpi.com
Various studies to improve the thermal performance of flat plate solar collector (FPSC) solar
water heater have been conducted, and more are currently in progress. This study aims to …

Improving the cooling performance of automobile radiator with Al2O3/water nanofluid

SM Peyghambarzadeh, SH Hashemabadi… - Applied thermal …, 2011 - Elsevier
In this paper, forced convective heat transfer in a water based nanofluid has experimentally
been compared to that of pure water in an automobile radiator. Five different concentrations …

Heat transfer behaviors in a tube with combined conical-ring and twisted-tape insert

P Promvonge, S Eiamsa-Ard - … Communications in Heat and Mass Transfer, 2007 - Elsevier
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 …

Hydrothermal characteristics of turbulent flow in a tube with solid and perforated conical rings

MA Hassan, AH Al-Tohamy, A Kaood - International Communications in …, 2022 - Elsevier
Metallic inserts are well-recognized in modern research as efficient passive thermal
performance enhancement methods. However, only scarce studies examined conical rings …

Influences of peripherally-cut twisted tape insert on heat transfer and thermal performance characteristics in laminar and turbulent tube flows

S Eiamsa-Ard, P Seemawute, K Wongcharee - Experimental Thermal and …, 2010 - Elsevier
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 …

Thermal performance enhancement in a heat exchanger tube fitted with inclined vortex rings

P Promvonge, N Koolnapadol, M Pimsarn… - Applied Thermal …, 2014 - Elsevier
The influence of inclined vortex rings (VR) on heat transfer augmentation in a uniform heat-
fluxed tube has been investigated experimentally. In the present work, the 30° inclined VRs …

Effect of discontinuous helical turbulators on heat transfer characteristics of double pipe water to air heat exchanger

M Sheikholeslami, M Gorji-Bandpy, DD Ganji - Energy Conversion and …, 2016 - Elsevier
Abstract Effect of typical and perforated discontinuous helical turbulators on flow and heat
transfer in an air to water double pipe heat exchanger is experimentally studied …

Experimental investigation of heat transfer and turbulent flow friction in a tube fitted with perforated conical-rings

V Kongkaitpaiboon, K Nanan, S Eiamsa-Ard - … Communications in Heat …, 2010 - Elsevier
Perforated conical-ring (PCR) is one of the turbulence-promoter/turbulator devices for
enhancing the heat transfer rate in a heat exchanger system. In the present paper, the …

Numerical investigation of turbulent Cu-water nanofluid in heat exchanger tube equipped with perforated conical rings

ME Nakhchi, JA Esfahani - Advanced Powder Technology, 2019 - Elsevier
Numerical analysis of the nanofluid flow characteristics of perforated conical rings in a heat
exchanger tube has been investigated under constant wall temperature condition. The pitch …