Results 41 to 50 of about 874 (207)

Heat transfer and pressure drop through mono and hybrid nanofluid‐based photovoltaic‐thermal systems

Energy Science & Engineering, 2022
Using nanofluids in photovoltaic‐thermal systems enhances the overall efficiency; however, increasing the pressure drop and pumping power, because of the higher viscosity of nanofluids, is a challenging factor for the nanofluid‐based systems.
Mohsen Hormozi Moghaddam, Maryam Karami
doaj   +1 more source

Thermohydraulic performance of thermal system integrated with twisted turbulator inserts using ternary hybrid nanofluids

, 2023
Mono, hybrid, and ternary nanofluids were tested inside the plain and twisted-tape pipes using k-omega shear stress transport turbulence models. The Reynolds number was 5,000 ≤ Re ≤ 15,000, and thermophysical properties were calculated under the ...
Waqar Ahmed, Mahmoud Eltaweel, Kamar, Haslinda Mohamed,, Ahmed, Waqar,, Zaher Mundher Yaseen, Yaseen, Zaher Mundher, Hussein, Omar A., Abdelrazek, Ali H., Homod, Raad Z., Mayadah W. Falah, Kamar, Haslinda Mohamed, Ahmed, Waqar, Hussein, Omar A.,, Omar A. Hussein, Ali H. Abdelrazek, Al-Ansari, Nadhir,, Haslinda Mohamed Kamar, Raad Z. Homod, Al-Ansari, Nadhir, Eltaweel, Mahmoud,, Alawi, Omer A.,, Alawi, Omer A., Nadhir Al-Ansari, Falah, Mayadah W.,, Omer A. Alawi, Falah, Mayadah W., Yaseen, Zaher Mundher,, Abdelrazek, Ali H.,, Homod, Raad Z.,, Eltaweel, Mahmoud   +29 more
core   +1 more source

Design, construction and evaluation of solar flat-plate collector simulator based on the thermohydraulic coefficient [PDF]

Journal of Agricultural Machinery, 2017
Introduction Increasing the area of absorber plate between the flowed air through the duct can be accomplished by corrugating the absorber plate or by using the artificial roughness underside of the absorber plate as the commercial methods for enhancing ...
H Rahmati Aidinlou, A. M Nikbakht
doaj   +1 more source

A Review on Solar Chimneys: From Natural Convection Fundamentals to Thermohydraulic Best-Performance Proposals

, 2023
This work presents an overview of (passive) solar chimney research, from the natural convection fundamentals to the recent progress for achieving thermohydraulic best-performance.
Blas Zamora, Zamora Parra, Blas
core   +1 more source

The heat transfer and entropy generation of fin and inclined flat tube heat exchanger

Case Studies in Thermal Engineering
The present work determines the appropriate inclination angles for each flat tube aspect ratio to increase the thermohydraulic performance without extending the heat exchange area.
Luan Nguyen Thanh, Le Minh Nhut, An-Quoc Hoang   +2 more
doaj   +1 more source

Heat transfer characterization of a new collector design featuring ribs, petals, and helical twisted tapes: Experimental study

Case Studies in Thermal Engineering
The limited thermal efficiency of collectors in photovoltaic thermal systems continues to pose a major hurdle. This study tackles the issue by developing an innovative collector featuring a rib and petal arrangement, combined with a helical twisted tape ...
Banw Omer Ahmed, Adnan Ibrahim, Hariam Luqman Azeez, Sharul Sham Dol, Ali H.A. Al-Waeli, Mahmoud Jaber   +5 more
doaj   +1 more source

Numerical Analysis on Thermohydraulic Performance of the Tube Inserted with Rectangular Winglet Vortex Generators

, 2021
The aim of this design was to improve the heat transfer performance significantly due to larger turbulent region and much vortices formed by tube inserted.
Zuoqin Qian, Qiang Wang, Yicong Li
core   +1 more source

A Detailed Review of Colburn and Friction Factors for Various Types of Fins Used in Compact Plate‐Fin Heat Exchangers

Heat Transfer, EarlyView.
ABSTRACT Compact plate‐fin heat exchangers (PFHEs) are commonly utilized in diverse industries, including aerospace, automotive, processing, and space. Various fin configurations, such as Plain fins, Wavy fins, Lance and Offset fins (OSFs), Perforated fins, louvered fins, and pin fins, are employed in compact heat exchangers (CHEs).
Chennu Ranganayakulu
wiley   +1 more source

An oriented-design simplified model for the efficiency of a flat plate solar air collector [PDF]

, 2010
In systems design, suitably adapted physical models are required. Different modelling approaches for a solar air collector were studied in this paper. First, a classical model was produced, based on a linearization of the conservation of energy equations.
LUNA, David, Jean-Pierre Nadeau, Yves Jannot, JANNOT, Yves, David Luna, NADEAU, Jean-Pierre   +5 more
core   +1 more source

Investigating thermal performance of combined use of SiO2-water nanofluid and newly designed conical wire inserts

Case Studies in Thermal Engineering, 2022
Background: The combined use of augmentation methods plays a significant role to enhance the thermohydraulic performance of thermal systems. This experimental study explores the thermohydraulic performance of a heat exchanger tube with the combined use ...
Fatma Oflaz, Orhan Keklikcioglu, Veysel Ozceyhan   +2 more
doaj   +1 more source