Article
Nanoscience & Nanotechnology
Youngsup Song, Shuai Gong, Geoffrey Vaartstra, Evelyn N. Wang
Summary: Boiling is a fundamental process in many applications where surfaces with microcavities or biphilic wettability can enhance heat transfer efficiency. This study investigated microtube structures to simultaneously enhance heat transfer coefficient and critical heat flux, achieving significant improvements compared to smooth surfaces. The combination of micropillars and microtubes further increased critical heat flux by separating nucleating bubbles and rewetting liquids.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
Kashif Ali, Sohail Ahmad, Kottakkaran Sooppy Nisar, Aftab Ahmed Faridi, Muhammad Ashraf
Summary: Hybrid nanoliquids exhibit improved physical strength, mechanical resistance, thermal conductivity, and chemical stability compared to individual nanoliquids. The study found that hybrid nanofluids have the potential to significantly increase shear stress levels, up to 57% in some cases. Caution must be exercised in using these fluids, particularly in applications where control over shear stress is necessary.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Thermodynamics
Waqar Ahmed, S. N. Kazi, Z. Z. Chowdhury, Mohd Rafie Johan
Summary: The thermophysical properties of ZnO@TiO2/DW composite nanofluids with various mass% concentrations were studied experimentally. The nanofluids showed enhanced thermal conductivity and heat transfer compared to the base fluid, with the 0.1 mass% concentration exhibiting the greatest improvement.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
M. Basit Shafiq, Usman Allauddin, Mumtaz A. Qaisrani, Tauseef-ur-Rehman, Naveed Ahmed, M. Usman Mushtaq, Hafiz Muhammad Ali
Summary: This study investigated the improvement in thermal performance of heat exchangers through the combination of two passive techniques, nanofluids and coiled tubes. Numerical simulations showed that using nanofluids can increase the Nusselt number, especially in shell and helical coil tube heat exchangers.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
A. Esmaeilzadeh, N. Nik-Ghazali, H. S. C. Metselaar, M. S. Naghavi, M. Azuddin, S. Iranmanesh
Summary: The experiments investigated the heat transfer characteristics in a sintered wick heat pipe using stable aqueous dispersions of 1-pyrene carboxylic acid (PCA)-functionalized graphene nanofluid. Results showed that thermal conductivity enhancement of nanofluids ranged from 21% to 40% with increasing concentration and temperature. The tilt angle of the heat pipe was found to have a substantial impact on the thermal properties, enhancing thermal performance by 79%. The use of nanofluids reduced heat pipe thermal resistance, with the most significant enhancement in overall heat transfer coefficient achieved at 0.06 mass% by 13.9 kW/K.m(2).
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Mechanics
Rajakumari Rammoorthi, Dhivya Mohanavel
Summary: The primary aim of this study is to examine the effect of squeezing hybrid nanofluids copper and magnetite with water flow across a horizontal surface under the impact of magnetic and radiative effects. The equations pertaining to momentum and energy are solved through a numerical approach. The results show that increasing the magnetic effect and volume fraction of nanoparticles strengthens the flow effect, while increasing the squeezing and permeable velocity parameter impedes the flow.
Article
Multidisciplinary Sciences
Mubashir Qayyum, Sidra Afzal, Mohamed R. Ali, Muhammad Sohail, Naveed Imran, Gilbert Chambashi
Summary: Hybrid nanofluids have shown better performance in various areas such as heat and mass transfer enhancement, biological fluid movement, medical equipment, heat exchangers, electronic cooling, and automotive industry. This study focuses on simulating the flow of a blood-based unsteady hybrid nanofluid between rotating, stretching disks and convective boundaries. The nanoparticles used are uranium dioxide UO (2) and multi-walled carbon nanotubes MWCNTs. The effect of magnetohydrodynamic effects and chemical reactions is considered. The results show that convective boundaries result in elevated temperature, and the skin friction and heat transfer rates increase with the volume fraction of nanoparticles, while the mass transfer rate exhibits contrasting behavior.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Chong Tak Yaw, S. P. Koh, M. Sandhya, K. Kadirgama, Sieh Kiong Tiong, D. Ramasamy, K. Sudhakar, M. Samykano, F. Benedict, Chung Hong Tan
Summary: This study investigates a unique hybrid nanofluid composed of graphene nanoplatelets and cellulose nanocrystals. The findings suggest that using this hybrid nanofluid can improve the heat transfer efficiency of vehicle radiators and reduce their size and weight.
Article
Chemistry, Multidisciplinary
Khursheed Muhammad, Bilal Ahmed, Mohamed Sharaf, Mohammad Afikuzzaman, Emad A. Az-Zo'bi
Summary: This study investigates the interactions between a hybrid nanofluid and a curved surface under stretching conditions. The findings show that Darcy-Forchheimer flow can increase flow rates and reduce skin friction, while the convective boundary condition promotes heat transfer and enhances the heat transfer rate.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Physical
Saeid Vafaei, Jonathan A. Yeager, Peter Daluga, Branden Scherer
Summary: It was found that the characteristics of nanoparticles, base liquid, thermal conductivity and viscosity of nanofluid can significantly affect the heat transfer coefficient. Man-made anatase TiO2 nanoparticles were found to be more effective in enhancing the heat transfer coefficient.
Article
Thermodynamics
Iskandar Waini, Anuar Ishak, Ioan Pop
Summary: The study investigates the impact of hybrid nanoparticles on flow and heat transfer over a stretching/shrinking disk. It reveals that dual solutions are possible for both shrinking and stretching cases, while a unique solution exists for the static surface. Moreover, the skin friction coefficient is optimal on the static surface, and heat transfer rate increases with the addition of hybrid nanoparticles.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Wajdi Alghamdi, Abdelaziz Alsubie, Poom Kumam, Anwar Saeed, Taza Gul
Summary: The current study focuses on the laminar flow of copper and copper oxide hybrid nanoliquid in blood, studying the effects of MHD and heat source/sink on the flow pattern. The magnetic field plays a vital role in blood flow, with the study extending the existing literature by incorporating magnetic fields. Cu and CuO hybrid nanofluids are used for medication purposes, and the addition of a heat emission/absorption term helps maintain homogeneous temperature for blood flow. It is expected that this work will provide efficient outputs for medical purposes such as drug delivery.
SCIENTIFIC REPORTS
(2021)
Article
Thermodynamics
Emmanuel O. Atofarati, Mohsen Sharifpur, Josua Meyer
Summary: This study investigates the impact of hybrid nanofluids and certain jet hydrodynamic effects on enhancing the cooling efficiency. The findings show that the hybrid nanofluids can achieve a higher heat transfer enhancement under different parameters.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Albin Joseph, Shijo Thomas
Summary: This paper presents an experimental analysis of the fouling factor and thermal performance of a carbon-dot nanofluid on a double-pipe heat exchanger. The study reveals that the flow rate of the fluid has a significant influence on the heat transfer coefficient, while the temperature has less significance on the performance.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Kelvin U. Efemwenkiekie, Sunday O. Oyedepo, Solomon O. Giwa, Mohsen Sharifpur, Taiwo F. Owoeye, Kehinde D. Akinlabu, Josua P. Meyer
Summary: The study investigated the heat transfer performance of novel nanofluids containing Malay Apple extract in a radiator. Increasing the volume fraction enhanced heat transfer performance, with the maximum performance observed in hybrid nanofluids.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Chung-Yu Yeh, K. J. F. Boonk, Gholamabbas Sadeghi, Mohammad Mehrali, Mina Shahi, Gerrit Brem, Amirhoushang Mahmoudi
Summary: This study explores a compact design of storage-integrated solar thermal collector and investigates the use of a shape stabilized phase change material (PCM) to improve the energy efficiency of a typical solar domestic water heating system. Experimental testing and numerical modeling were conducted to analyze the thermal properties of the developed PCM. The results show that optimizing the collector design can significantly extend the discharging period and improve the charging rate.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Gholamabbas Sadeghi, Mohammad Mehrali, Mina Shahi, Gerrit Brem, Amirhoushang Mahmoudi
Summary: Investigations into the design of compact PCM-solar systems have shown that integrated flat plate storage systems are predominantly used for space heating, while concentrating solar collectors are primarily utilized in industrial applications, employing different phase change materials to provide varying temperature levels.
Article
Polymer Science
Agustinus Purna Irawan, Deni Fajar Fitriyana, Cionita Tezara, Januar Parlaungan Siregar, Dwinita Laksmidewi, Gregorius Dimas Baskara, Mohd Zulkfly Abdullah, Ramli Junid, Agung Efriyo Hadi, Mohammad Hazim Mohamad Hamdan, Najid Najid
Summary: The braking system plays a crucial role in automotive safety. The durability and quality of brake pads are vital for their effective functioning. Asbestos, a harmful material, has been widely used in brake pad manufacturing but efforts are being made to find natural alternatives. This review focuses on analyzing the key parameters affecting brake pad performance and discusses the composition of fillers and fiber reinforcements in polymer composites.
Article
Chemistry, Multidisciplinary
Mohd Zulkifly Abdullah, Kok Hwa Yu, Hao Yuan Loh, Roslan Kamarudin, Prem Gunnasegaran, Abdusalam Alkhwaji
Summary: The study found that the density, thermal conductivity, and viscosity of Cu-Ni hybrid nanofluids increase with volume fraction, while the specific heat capacity at constant pressure decreases with volume fraction.
Article
Engineering, Mechanical
Isam Qasem, Ahmed A. Hussien, Ayub Ahmed Janvekar, Pramodkumar S. Kataraki, Miroslaw Pracki, M. Abdul Mujeebu
Summary: Superfinishing is a method used for high-quality surface machining of elements subjected to high surface wear. This experimental study focused on determining the effect of machining parameters on surface roughness of high-quality alloy bearing steel. The results showed that the optimum surface quality depended on the process parameters, including grain size, machining time, crosshatch angle, and contact pressure. The study also established regression equations and multidimensional correlations for subsequent roughness and performance parameters.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2022)
Article
Chemistry, Physical
Amir Reza Akhiani, Hendrik Simon Cornelis Metselaar, Bee Chin Ang, Mehdi Mehrali, Mohammad Mehrali
Summary: This study introduces a new approach for facile assembly of graphene nanoplatelet (GNP) to overcome the practical application issues of phase change materials (PCMs) in solar-thermal technology. The embedded GNP enhances the loading of paraffin wax and transition enthalpy, resulting in excellent solar-thermal storage efficiency.
MATERIALS TODAY ENERGY
(2022)
Article
Thermodynamics
Gholamabbas Sadeghi, Mohammad Mehrali, Mina Shahi, Gerrit Brem, Amirhoushang Mahmoudi
Summary: This study addresses the issue of storage tank requirement in solar water heaters by experimentally applying a shape-stabilized phase change material (PCM) to a tankless solar collector. The research found that the thermal efficiency of the collector-storage system was significantly improved, showing potential for energy storage. Changing the flow rate had a limited impact on heat gain, but high flow rates reduced the discharge efficiency. Furthermore, the proposed system showed promising results in terms of cost savings and reduction in CO2 emissions.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Vignesh Vicki Wanatasanappan, Munirah Rezman, Mohd Zulkifly Abdullah
Summary: This study investigates the thermophysical properties of vegetable base oils suspended with Al2O3-TiO2 nanoparticles. The results show that palm oil-based hybrid nanofluids exhibit superior thermal conductivity and viscosity, making them suitable for enhancing the performance of insulation oil in the electrical power sector.
Article
Polymer Science
Asad Masood, Naeem Ahmed, M. F. Mohd Razip Wee, Anuttam Patra, Ebrahim Mahmoudi, Kim S. Siow
Summary: Antibacterial coatings are necessary to prevent bacterial colonization and infection in medical tools. This study presents a rapid and one-step atmospheric pressure plasma polymerization (APPP) method for producing nano-thin films with hydrophobic-like properties using D-limonene. The resulting films exhibit strong antibacterial activity and have the potential to be used for bacteria-resistant and biocompatible coatings on various substrates.
Article
Polymer Science
Agustinus Purna Irawan, Paula Tjatoerwidya Anggarina, Didi Widya Utama, Najid Najid, Mohd Zulkfly Abdullah, Januar Parlaungan Siregar, Tezara Cionita, Deni Fajar Fitriyana, Jamiluddin Jaafar, Agung Efriyo Hadi, Teuku Rihayat
Summary: The investigation of hybrid, woven, natural fiber-reinforced polymer composites as a substitute reinforcement for fiber polymer composites has gained significant interest. The research found that woven rattan and glass fiber hybrid composites exhibit good mechanical properties and thermal stability, making them suitable for automotive applications.
Article
Chemistry, Multidisciplinary
Isam Qasem, Ahmed A. Hussien, Khalideh A. Alrawashdeh, Pramodkumar S. Kataraki, Ayub Ahmed Janvekar
Summary: One of the most challenging tasks in machining hard materials is to achieve super high precision with excellent surface finish. Abrasive water jet (AWJ) machining is proven technology for generating high precision components. This study aimed to showcase the technical parameters and their impact on kerf taper and surface roughness. Experimental data showed that variations in traverse speed, water pressure, and abrasive feed rate greatly influenced the kerf taper and surface roughness. ANOVA analysis using MINITAB 19 was conducted to study the behavior of the kerf taper angle.
ANNALES DE CHIMIE-SCIENCE DES MATERIAUX
(2023)
Article
Mathematics, Applied
Tayyaba Mukhtar, Wasim Jamshed, Asim Aziz, Wael Al-Kouz
Summary: The main objective of this paper is to numerically investigate the results of a mathematical model for unsteady magnetohydrodynamics (MHD) boundary layer flow over a porous stretching surface. The analysis of non-Newtonian Maxwell nanofluid is presented involving the influence of porous media, thermal radiation, viscous dissipation, and joule heating through the Keller box method. The obtained numerical results are compared with existing results, and it is found that the Cu-H2O based nanofluid exhibits superior thermal conductivity.
NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS
(2023)
Article
Engineering, Civil
La'aly A. Al-Samrraie, Khalideh Al Bkoor Alrawashdeh, Huthaifa Ahmad Al Issa, Saleh Shakhatreh, Ahmed A. Hussien, Isam Qasem
Summary: Jordan is one of the most water-scarce countries in the world, with the country's renewable water supply meeting only half of the population's water demands. This study investigated the removal of heavy metals from pharmaceutical wastewater using palm fronds as organic adsorbents. The results showed that increasing the concentration of the adsorbent improved the removal efficiency, while the removal effects of sodium and pH were lower.
CIVIL AND ENVIRONMENTAL ENGINEERING
(2022)
Proceedings Paper
Green & Sustainable Science & Technology
A. Boretti, S. Castelletto, W. Al-Kouz, J. Nayfeh
Summary: The study proposes using a multi-effect distillation system in a concentrated solar power plant to condensate steam while producing desalinized water for energy savings. Preliminary design considerations for a project in Al Khobar, Saudi Arabia, are discussed, which could potentially allow for electricity production and desalination in a sand and dust-protected environment.
2020 3RD INTERNATIONAL CONFERENCE ON GREEN ENERGY AND ENVIRONMENT ENGINEERING
(2021)
Article
Engineering, Environmental
Siew Fen Chua, Alireza Nouri, Wei Lun Ang, Ebrahim Mahmoudi, Abdul Wahab Mohammad, Abdelbaki Benamor, Muneer Ba-Abbad
Summary: Water pollution is a growing concern that requires effective treatment technologies like adsorption. Multifunctional adsorbents have emerged, offering capabilities for pollutant removal, photocatalytic, and antibacterial properties. Despite the promising performance, further techno-economic studies are needed to fully realize the benefits and potential applications of these advanced materials in wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
