Results 61 to 70 of about 473 (176)

Numerical Simulation and Experimental Study of Thermal Performance in Double‐Pass Solar Water Heaters With Paraffin Wax Storage

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Solar water heaters are widely used to convert solar energy into thermal energy for residential, commercial, and industrial applications. This study investigates the thermal performance of a double‐pass solar water heater (DPSWH) using numerical and experimental approaches under different water mass flow rates.
Lan Zhang, Muhammad Waqas, Lun Zhao, Zeshan Abbas, Jiajin Zhang, Muhammad Imran, Hafiz Muhammad Shahzad   +6 more
wiley   +1 more source

Impact of Leading and Trailing‐Edge Perforations on the Thermohydraulic Performance of Rectangular‐Winglet Vortex Generators

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
In this study, the thermohydraulic performance of rectangular‐winglet vortex generators (VGs) with different hole configurations (a central hole, dual‐edge holes, a leading‐edge hole, and a trailing‐edge hole) was numerically investigated. In addition, airflows through solar air heater ducts enhanced with these VGs were simulated using the realizable k‐
Roytor Charoensin-O-Larn, Boonchai Lertnuwat, Naveen Sharma   +2 more
wiley   +1 more source

Thermo‐Hydraulic Performance Evaluation of Tapered Dual‐Plane Twisted Tapes by Sequential Geometry Selection: CFD Analysis With ML‐Assisted Data‐Driven Prediction

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
This study investigates dual‐plane rectangular‐cut twisted‐tape (DP‐RCTT) inserts for enhancing heat transfer in heated tubes through sequential geometry selection, including secondary‐axis thickness, rotational sense, and taper angle, under turbulent flow over the overall Reynolds number range of Re = 5000–14,000.
Mohammad Rafat Islam, Dipayan Mondal, A. S. M. Jubayer Mufid, Cheng Du   +3 more
wiley   +1 more source

Achieving 85% Thermal Efficiency: Numerical Performance Analysis of a Solar Air Heater With Curved‐Leg Divided Triangular Tubes

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
This article proposes and numerically analyzes a high‐performance solar air heater (SAH) featuring a novel absorber configuration with curved‐leg triangular tubes (CLTTs) under an impingement‐return flow arrangement. The key innovation lies in the tube’s cross‐section, which approximates a triangle with two curved arc‐shaped legs, internally divided by
S. A. Gandjalikhan Nassab, Mahmoud Ahmed
wiley   +1 more source

Heat Transfer and Irreversibility Analysis of Cu-MXene/Water Hybrid Nanofluids in Tubes with Partial Metal Foam Filling

Applied Sciences
Metal foams and nanofluids are recognized as attractive and effective heat transfer enhancement methods. This study numerically investigates forced convection heat transfer and second-law thermodynamic behavior of water and a 0.02% Cu–MXene/water hybrid ...
Nizar Loussif, Jamel Orfi, Saleh S. Baakeem   +2 more
doaj   +1 more source

Thermohydraulic performance of spray cooling systems: a general model by machine learning

Artificial Intelligence Review
With the rapid development of high-power density instruments, spray cooling has drawn increasing interest in industry as a high-efficiency thermal management technology. Despite extensive research, typical spray cooling systems only function effectively within constrained conditions.
Mohammad Shamsodini Lori, Wenge Huang, Zhenhua Tian, Jiangtao Cheng   +3 more
openaire   +4 more sources

A Novel Tubular Solar Air Heater With Internal Plates: A CFD Study on Segregated Impingement Flow

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
This paper presents a numerical analysis of a novel and efficient solar air heater (SAH) designed with an integrated impingement‐return configuration to enhance thermal performance. The system consists of nine blackened copper tubes where incoming air first passes through the lower half of each tube. At the far end, the flow reverses direction in a 180°
S. A. Gandjalikhan Nassab, Fatemeh Boshagh   +1 more
wiley   +1 more source

Effects of Outlet Width and Channel Configuration on the Thermohydraulic Performance of Wedge-Shaped Manifold Microchannels

Applied Sciences
This study numerically investigates the effects of manifold outlet width and lower-layer microchannel configuration on the thermohydraulic performance of a wedge-shaped manifold microchannel heat sink for high-heat-flux electronic cooling.
Zian Yang, Weili Gu, Yichen Lei, Yuchen Hu   +3 more
doaj   +1 more source

A New Mathematical Model for Flow and Heat Transfer of Dual‐String Steam Injection in SAGD

Geofluids, Volume 2026, Issue 1, 2026.
Uneven steam distribution along horizontal wellbores, particularly the disparity between the heel and toe, poses a significant challenge in steam injection for heavy oil recovery. This often leads to asymmetric steam chamber development and premature steam channeling, severely limiting process efficiency.
Qiuying Du, Lili Cao, Wenfang Song, Mengyun Zhao, Hang Xu, Chuxiao Miao, Qingjun Du, Pramita Mishra   +7 more
wiley   +1 more source

Heat transfer and flow characteristics in horizontal spiral coils with flat tubes and rectangular ribs: CFD and optimization

International Journal of Thermofluids
The present work focuses on the analysis of heat transfer and flow characteristics in a horizontal spiral coil with rectangular ribbed flat tubes. The influence of Reynolds numbers (Re) ranging from 3000 to 12,000, relative rib height (Hn) from 0.04 to 0.
Luan Nguyen Thanh, Minh Ha Nguyen
doaj   +1 more source