Results 11 to 20 of about 106,281 (264)

Novel validated numerical analysis of flat coil tube with spring inserts

open access: yesCase Studies in Thermal Engineering, 2022
Flat coil tube is a highly compact heat exchanger applicable in refrigeration, food processing, heat recovery, power generation and many other systems.
Fayez Aldawi
doaj   +1 more source

Numerical investigation of thermal and hydraulic performance of fin and flat tube heat exchanger with various aspect ratios

open access: yesAlexandria Engineering Journal, 2021
Thermal and hydraulic performance for laminar flow over a fin and flat tube heat exchanger with various aspect ratios studied numerically. The parameters studied were inlet air velocity and flat-tube aspect ratio.
Mohamed A. Alnakeeb   +2 more
doaj   +1 more source

Experimental investigation of improved parabolic trough solar collector thermal efficiency using novel receiver geometry design

open access: yesInternational Journal of Thermofluids, 2023
This experimental study discusses the thermal efficiency enhancement of a parabolic trough solar collector (PTSC) system using different absorber tube designs.
Asaad Yasseen Al-Rabeeah   +2 more
doaj   +1 more source

Investigation of the Effect of Gradual Change of the Inner Tube Geometrical Configuration on the Thermal Performance of the Double-Pipe Heat Exchanger [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2023
Today, with the development of technology, heat transfer, reducing the time of heat transfer, reducing the size of heat exchangers, and increasing the efficiency are considered. Heat exchangers have many applications in the industry.
Nima Ahmadi   +3 more
doaj   +1 more source

Numerical treatment of melting characteristics of angular oriented flat tube in a double tube latent heat energy storage unit

open access: yesCase Studies in Thermal Engineering, 2022
The latent heat energy utilized phase-change material stores enormous amounts of energy in relatively small spaces. The poor thermal conductivity of the phase change material has a significant drawback.
Mohamed A. Alnakeeb   +2 more
doaj   +1 more source

Braiding Polythene Lay‐Flat Tube into Cotton Threads for Artificial Muscle Actuation

open access: yesAdvanced Intelligent Systems, 2023
In wearable robotics, soft actuation principles have been increasingly explored and tested due to their safety and comfort in human–robot interactions. Herein, a braided flat‐tube artificial muscle (BFAM) is presented.
Changchun Wu   +3 more
doaj   +1 more source

Study on the Coupling Effect of Heat Transfer and Refrigerant Distribution in the Flat Tube of a Microchannel Evaporator

open access: yesEnergies, 2022
Refrigerant maldistribution severely deteriorates the heat transfer performance of a microchannel evaporator. Compared with the refrigerant distribution among flat tubes along the header, refrigerant distribution among microchannels in the flat tube in ...
Wenju Hu, Xin Zhang
doaj   +1 more source

Numerical study to predict optimal configuration of wavy fin and tube heat exchanger with various tube shapes

open access: yesRevue des Énergies Renouvelables, 2022
This paper aims to investigate the influence of tube shapes on thermal-flow characteristics of sinusoidal wavy finned-tube heat exchangers. Two row staggered bundle with six geometries of tubes (four flat tube geometries, one oval tube and a circular ...
Farouk Tahrour   +3 more
doaj   +1 more source

Numerical Investigation of Thermal-Flow Characteristics in Heat Exchanger with Various Tube Shapes

open access: yesApplied Sciences, 2021
In this study, eight configurations of oval and flat tubes in annular finned-tube thermal devices are examined and compared with the conventional circular tube.
Fares Djeffal   +10 more
doaj   +1 more source

Performance Evaluation of Flat Plate and Vacuum Tube Solar Collectors by Applying a MWCNT/Fe3O4 Binary Nanofluid

open access: yesEnergies, 2020
This study experimentally investigated the performance characteristics of water and MWCNT/Fe3O4 binary nanofluid as a working fluid in a flat plate and vacuum tube solar collectors.
Minjung Lee, Yunchan Shin, Honghyun Cho
doaj   +1 more source

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