Review
Chemistry, Multidisciplinary
Farhan Lafta Rashid, Ahmed Kadhim Hussein, Emad Hasani Malekshah, Aissa Abderrahmane, Kamel Guedri, Obai Younis
Summary: Recent studies have explored various strategies to modify heat-transfer rates in closed cavities, such as adding partitions, fins, or altering forms. Experimental and numerical investigations have shown that fin design can enhance heat transmission and accelerate phase change material melting. Additionally, the optimal wind incidence angle for maximum convective heat loss depends on cavity tilt angle and wind speed.
Article
Energy & Fuels
Ozge Yetik, Tahir Hikmet Karakoc
Summary: Batteries are crucial for hybrid electric aircraft and their operating temperature greatly affects their performance and lifespan. Therefore, effective thermal management is vital. This study investigates the cooling of a battery module using nanofluids comprising nanoparticles and refrigerants at different ratios. The research also examines the impact of nanofluid volume ratio, input speeds, and discharge rates on the battery's thermal and electrical properties. Additionally, the study includes the consideration of busbars, which connect the batteries and play a role in thermal management. The results indicate that nanofluid cooling is more effective than air cooling, with different effectiveness observed depending on the type of refrigerant used. Moreover, the inlet velocity of the nanofluid affects the temperature range of the battery module.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Ozge Yetik, Tahir Hikmet Karakoc
Summary: In this study, the cooling effect of 15 prismatic batteries connected in series was compared using air and alumina nanofluid. The results showed that the nanofluid can effectively keep the battery at a safe operating temperature under certain conditions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Thermodynamics
Davood Shafiei, Seyed Alireza Mostafavi, Saeed Jafari Mehrabadi, D. Toghraie
Summary: This study investigates the thermal modeling of heaters at the city gate stations in Iran and aims to improve heat transfer efficiency and reduce fuel consumption. The results demonstrate that changing the heat transfer mechanism from free to forced convection in the heaters leads to a decrease in efficiency.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Engineering, Chemical
Yuxing Wang, Cong Qi, Zi Ding, Jianglin Tu, Rui Zhao
Summary: The study showed that triangular tubes have better heat transfer efficiency compared to round tubes, and the use of porous twisted tape and nanofluids can significantly improve system economy and heat transfer ability, but it also comes with disordered flow and increased entropy within the tubes.
Article
Engineering, Chemical
Robert Plant, Gregory Hodgson, Stefania Impellizzeri, M. Ziad Saghir
Summary: The use of nanofluids for heat transfer has gained research interest as a potential method for enhancing heat transfer. Various experiments have shown that the use of nanoparticles in a working fluid does not significantly disrupt the system and can improve the heat transfer capabilities of a system. Nano fluids and hybrid nanofluids have been found to offer thermal enhancement without major drawbacks.
Article
Engineering, Multidisciplinary
Sheam-Chyun Lin, Chih-Yi Wu, Yu-Jung Chang, Feng Lai
Summary: This article explores methods to improve the performance of an EHD gas pump in a square channel. It compares different electrode configurations to determine the most effective design, providing important information for practical applications of EHD technology.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2022)
Article
Engineering, Multidisciplinary
Farida Iachachene, Zoubida Haddad, Muesluem Arici, Mehdi Jamei, Amina Mataoui
Summary: Turbulent forced convective flow of hybrid and single nanofluids in a conical diffuser is numerically investigated. The impact of using theoretical and experimental correlations for dynamic viscosity and thermal conductivity on the heat transfer is studied. Addition of TiO2 nanoparticles decreases the heat transfer inside the diffuser, whereas addition of TiO2-SiO2 nanoparticles either enhances or decreases the heat transfer rate. The Gene Expression Programming model accurately evaluates the relationship between the Nusselt number, Reynolds number, and nanoparticle concentration.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Engineering, Chemical
Zi Ding, Cong Qi, Tao Luo, Yuxing Wang, Jianglin Tu, Chengchao Wang
Summary: The study showed that TiO2-H2O nanofluids and corrugated pipes significantly improved the heat transfer efficiency of double-pipe heat exchangers.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Mathematics
Abdulwahed Muaybid A. Alrashdi
Summary: This study investigates the entropy generation of water-copper nanofluid peristalsis in an asymmetric inclined channel. It considers physical effects and employs mathematical modeling to determine the flow behavior. The results show that increasing nanoparticle volume fraction reduces temperature, entropy generation, velocity, and pressure gradient. The comparison of heat transfer rates for different physical parameters also reveals consistent results. The significance lies in analyzing the peristaltic behavior of a non-Newtonian nanofluid and considering various physical effects.
Article
Energy & Fuels
Filipe Neves, A. A. Soares, Abel Rouboa
Summary: This paper focuses on the numerical study of the performance of two nanofluids in heat transfer by forced convection in an automobile radiator. The results show that increasing the concentration of nanoparticles can enhance the heat transfer efficiency.
Article
Thermodynamics
A. Dominic, V. S. Devahdhanush, S. Suresh
Summary: The experimental investigation studied the effect of relative waviness on heat transfer and pressure drop characteristics of wavy minichannel array heat sinks. The results showed an increase in both Nusselt number and pressure drop with an increase in relative waviness, reaching a maximum performance factor of 2.6 at a Reynolds number of 1900 in the wavy minichannels using DI water. Temperature distributions and new Nusselt number correlations for both geometries were also presented.
HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Md Jahid Hasan, Shams Forruque Ahmed, Arafat A. Bhuiyan
Summary: This study investigates the heat transfer performance of a helical heat exchanger using nanofluids with different head-ribbed geometries and coil revolutions. The results show that the helical heat exchanger with 2 head ribbed and 30 coil revolution is the most effective design. The use of nanofluids enhances the heat transfer rate, with Al2O3 offering the highest heat transfer rate and SiO2 providing the lowest. The heat transfer rate improves with a decrease in the number of ribbed heads and an increase in coil revolutions.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Aadel A. R. Alkumait, Thamir K. Ibrahim, Maki H. Zaidan, Ahmed T. Al-Sammarraie
Summary: This study investigates the heat transfer enhancement using nanofluids in ribbed tubes and explores the effects of different rib shapes and numbers on heat transfer. The results demonstrate that helical ribbed tubes outperform plain tubes in terms of heat transfer, and tubes with trapezoidal ribs exhibit better thermal performance.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
C. J. Ho, S. H. Huang, Chi-Ming Lai
Summary: This study investigates the improvement in convective heat transfer by using concurrent flows of Al2O3/PCM nanofluids in a concentric double-tube duct. The results show that high total flow rate and concurrent flow ratio can effectively enhance the heat transfer effectiveness.
CASE STUDIES IN THERMAL ENGINEERING
(2022)