Article
Construction & Building Technology
M. Sheikholeslami, Hazim R. A. Al-Hussein
Summary: This study combines Trombe wall with paraffin layer and fins for solar energy saving and ventilation purposes. Alumina nanoparticles are loaded into pure paraffin to enhance the performance. Two heat generation terms are added to consider solar irradiation, and temperature equations with heat sources are applied for modeling different layers. The impacts of fins' thickness, length, and paraffin layer's position are investigated. The system with Y-shaped fins shows higher liquid fraction and lower heat loss, leading to a 28.41% increase in heat capacity at 17:00 with the best configuration.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Chemistry, Analytical
Shifeng Yu, Yongjia Wu, Shuyu Wang, Michael Siedler, Peter M. Ihnat, Dana Filoti, Ming Lu, Lei Zuo
Summary: This paper presents a novel MEMS-based differential scanning calorimeter (DSC) for direct thermal characterization of protein samples. The DSC exhibited high sensitivity, low noise, high scanning rate, and low sample consumption volume. The study demonstrated that the MEMS DSC is an effective tool for directly understanding the thermal stability of antibodies in a high-throughput and low-cost manner compared to conventional calorimeters.
Article
Chemistry, Multidisciplinary
Fahim Faraji, Mehdi Neek-Amal, Erik C. Neyts, Francois M. Peeters
Summary: Molecular dynamics simulations were used to investigate the effect of an AFM tip when indenting graphene nano bubbles filled with He, Ne, and Ar gases. The failure points resembled those of viral shells, as described by the Foppl-von Karman (FvK) dimensionless number in the context of elasticity theory. At room temperature, He gas was found to be in the liquid state inside the bubbles, while Ne and Ar atoms were in the solid state, despite the pressure inside the nano bubble being below the melting pressure of the bulk. The trapped gases experienced higher hydrostatic pressure at low temperatures compared to room temperature.
Article
Energy & Fuels
R. Harish, Rajesh Nimmagadda, S. Rajesh Reddy
Summary: The turbulent melting characteristics of hybrid nano-enhanced phase change material in a three-dimensional rectangular enclosure are investigated numerically. The addition of hybrid nanoparticles significantly improves the melting rate and thermal performance of the phase change material.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
R. Reji Kumar, A. K. Pandey, M. Samykano, Yogeshwar Nath Mishra, R. V. Mohan, Kamal Sharma, V. V. Tyagi
Summary: In this research, the thermophysical properties of salt hydrate PCMs were improved by dispersing multi-walled carbon nanotubes (MWCNTs) and functionalized multi-walled carbon nanotubes (FMWCNTs) nanoparticles. The prepared nanocomposite showed enhanced melting enthalpy and thermal conductivity, making it a potential candidate for solar thermal energy storage applications.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Nidhal Ben Khedher, Mikhail Sheremet, Amira M. Hussin, S. A. M. Mehryan, Mohammad Ghalambaz
Summary: The aim of this study is to investigate the influence of hot wall configuration on the thermal performance of an inclined square capsule containing nano-enhanced phase change material (NePCM). The porosity-enthalpy technique is used to track the melting flow. Three different hot wall configurations for the capsule are considered. The results show that the charging power is affected by the inclination angle and the amount of graphene nanoparticles (GNPs) in the NePCM.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Mohammad Ghalambaz, S. A. M. Mehryan, Hassan Shirivand, Farshid Shalbafi, Obai Younis, Kiao Inthavong, Goodarz Ahmadi, Pouyan Talebizadehsardari
Summary: The research investigates the use of coconut oil-CuO phase change material embedded in nonuniform copper foam to reduce charging time of a thermal energy storage unit. It was found that lower porosity and increased volume fractions of nanoparticles contribute to faster charging time, with minimal impact on the charging power of the TES unit.
Article
Engineering, Multidisciplinary
S. Harikrishnan, A. D. Dhass, Hakan F. Oztop, Nidal Abu-Hamdeh
Summary: In this study, four formulations of composite phase change materials were produced by adding nanoparticles. The thermal properties of these composite materials were improved, resulting in faster melting and freezing times.
Article
Chemistry, Medicinal
Hemanth K. Mamidi, Bhagwan D. Rohera
Summary: This study demonstrated the feasibility of using DSC combined with response surface methodology as a material-sparing tool for determining processing conditions for HME during initial stages of development. The optimized drug loading and processing temperature helped to reduce the cost of HME product development, making it more cost-effective.
JOURNAL OF PHARMACEUTICAL SCIENCES
(2021)
Article
Energy & Fuels
Xiong Xiao, Jordan Oakley, Saif Z. S. Al Ghafri, Thomas Hughes, Darren Rowland, Lubomir Hnedkovsky, Glenn Hefter, Eric F. May
Summary: Isobaric heat capacity data for supercritical mixtures of methane and propane were measured and compared with three models, showing that the Peng-Robinson EOS best describes the experimental results. The inaccuracies in other models were attributed to different factors, such as the failure of the SAFT-gamma Mie EOS to predict ideal gas heat capacity accurately at cryogenic temperatures.
Article
Green & Sustainable Science & Technology
Mohammad Ghalambaz, S. A. M. Mehryan, Ahmad Hajjar, Mehdi A. Fteiti, Obai Younis, Pouyan Talebizadeh Sardari, Wahiba Yaici
Summary: The study investigated the melting heat transfer of CuO-coconut oil embedded in a non-uniform copper metal foam. It was found that the porosity gradient in the Thermal Energy Storage (TES) unit could significantly enhance the melting rate and stored energy rate. Additionally, the presence of nanoparticles could affect the charging time.
Article
Energy & Fuels
Zi-Rui Li, Zi-Kun Zhang, Xiao-Rong Wang, Shuang-Shuang Ni, Li-Wu Fan
Summary: Nano-enhanced phase change materials (NePCM) exhibit immense potential for thermal energy storage (TES) applications, due to its improved thermal conductivity. However, its high viscosity can cause a significant deterioration in natural convection. Close-contact melting (CCM), featuring heat conduction through micro-liquid film, is regarded as a viable pathway to maximize the advantage of NePCM's high thermal conductivity and weaken the adverse effect of high viscosity on convection.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Khalid H. Almitani, Nidal H. Abu-Hamdeh, Abdullah M. Abusorrah, Hussein A. Z. AL-bonsrulah, Nasrin B. M. Elbashir
Summary: By dispersing nanomaterials and altering the container shape and additive properties, the speed of solidification can be increased significantly. The mathematical models show that the longest freezing time occurs for pure water, and the optimal performance is achieved with a moderate diameter and a certain fraction of added particles, resulting in a significant reduction in freezing time.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Food Science & Technology
Zin Myo Swe, Thapakorn Chumphon, Marutpong Panya, Kanjana Pangjit, Saran Promsai
Summary: This study investigated the use of cryoprotectant and a mixture of cryoprotectant to maintain probiotic activity. By analyzing the properties and activities of multiple probiotic strains, the study demonstrated that using a complex medium as a cryoprotectant and wall material can retain a high viability and activity of probiotics. These findings have significant implications for food applications.
Article
Energy & Fuels
Sourav Chatterjee, Dipankar Bhanja, Sujit Nath
Summary: This numerical study analyzes the melting behavior of three phase change materials, namely Lauric acid, paraffin wax, and n-Octadecane, in trapezoidal-shaped cavities with inner heated tubes. The study investigates the influence of the angular variation of the containers and the position of the tubes on the melting rate and heat transfer process of the phase change materials. The results demonstrate that the shape of the cavity and proper positioning of the inner tube can significantly affect the melting phenomenon and improve the charging rate.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
V Pranesh, R. Velraj, V Kumaresan
Summary: In this study, a system combining thermal energy storage tanks with solar collectors and heat loading devices were designed and analyzed. The performance and stratification effects of the system were studied through experiments. The results showed that charging and discharging simultaneously could collect more solar energy and increase the efficiency of the tanks. The use of phase change materials with different phase change temperatures in the system improved its performance.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2023)
Article
Chemistry, Physical
Poongavanam Ganesh Kumar, V. S. Vigneswaran, Vinothkumar Sivalingam, R. Velraj, Seong Cheol Kim, Vanaraj Ramkumar
Summary: Deionized water and activated carbon nanofluids were produced at different volume concentrations, and the structural properties and thermal exchange properties of these nanofluids were evaluated. The addition of activated carbon nanoparticles significantly improved the thermal conductivity and specific heat of the nanofluids. In a car radiator, the addition of activated carbon nanoparticles increased the Nusselt number and decreased the Reynolds number.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
P. Pragathi, P. Sundaram, A. Sathishkumar, P. Ganesh Kumar
Summary: The study focuses on the reuse of spent catalyst waste from petroleum refining industries as reinforcement in aluminum composite materials. Nano B4C/waste spent catalyst/Al matrix composites were fabricated using the stir casting method, with varying B4C content (0.5-2.0 wt%) and constant spent catalyst waste content (10 wt%). The addition of nano B4C and spent catalyst waste significantly improved the mechanical properties of the aluminum composites, including compressive strength, hardness, and tensile strength. The enhanced tensile strength was mainly attributed to the Orowan strengthening mechanism and thermal stresses caused by the difference in coefficient of thermal expansion between the aluminum matrix and reinforcement. The most effective mechanical behavior was achieved with 1.5 wt% B4C and 10 wt% spent catalyst waste, resulting in substantial improvements in hardness (65.62%), compressive strength (31.81%), and tensile strength (48.23%) compared to pure aluminum.
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
(2023)
Article
Thermodynamics
Mohammad Salman, Rajendran Prabakaran, Poongavanam Ganesh Kumar, Dongchan Lee, Sung Chul Kim
Summary: An inclusive experimental study was conducted to explore the features of heat transfer coefficient and frictional pressure drop of R290 in a brazed plate heat exchanger. The findings revealed that nucleate boiling dominated at lower vapor qualities, while convection-dominated at higher vapor qualities. Empirical correlations for Nusselt number and friction factor were developed for R290 with a mean absolute error of 10% and 14% respectively, taking into account the influence of equivalent and liquid Reynolds numbers and the liquid and vapor densities.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Engineering, Mechanical
R. Rajeshkanna, M. Meikandan, C. Daxayani, P. Ganesh Kumar
Summary: This study develops an effective deep-learning model for solar panel manufacturing monitoring. It improves the resolution of low-resolution solar cell images and extracts fault-related characteristics to classify defect and non-defect solar cell images. The model achieves a maximum accuracy of 99.91% and has the potential to be used in a real manufacturing unit.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Poongavanam Ganesh Kumar, N. Thangapandian, V. S. Vigneswaran, P. Sundaram, A. Sathishkumar, Sung Chul Kim, Rajendran Prabakaran
Summary: This study investigated the energy, exergy, economic, and environmental evaluation of a single slope solar still (SS) using various enhancement techniques such as sandblasting, milling, and shot-blast aided corrugation. Among the four types of SS considered, the shot-blasted aided corrugated-absorber SS achieved the highest yield, 1.46 times superior to that of the traditional solar still (CSS).
Article
Energy & Fuels
V. S. Vigneswaran, P. Suresh Kumar, Poongavanam Ganesh Kumar, J. Aravind Kumar, S. Siva Chandran, G. Kumaresan, Mathiyazhagan Shanmugam
Summary: This study aims to increase the distillate output of a passive solar still (PSS) by incorporating a water jacket (WJ) around the sidewalls. The WJSS, incorporated with the water jacket, enhances the dehumidification rate by allowing water to condense on its surface in addition to the inner glass surface. The presence of the water jacket not only increases the available surface area for condensation by 123% but also reduces heat loss, resulting in higher thermal efficiency and overall yield compared to the conventional PSS (CPSS).
Article
Chemistry, Multidisciplinary
Pragathi Pandian, Palanichamy Sundaram, Anbalagan Sathishkumar, Rajendran Prabakaran, Poongavanam Ganesh Kumar, Sung Chul Kim, Abdullah Alodhayb, Saravanan Pandiaraj, Elansezhian Rasu, Muraliraja Rajaraman
Summary: This research introduced nano TiO2 and ZrO2 particles to the NiP electroless bath to create NiP-TiO2-ZrO2 composite deposits on magnesium AZ91D substrates. The addition of sodium dodecyl sulfate (SDS) as an anionic surfactant minimized particle agglomeration and improved the surface properties of the deposits. The study also explored the impact of SDS surfactant on the corrosion properties of the coatings. The overall findings reveal that incorporating SDS surfactant at the optimum concentration enhanced wettability, deposition rate, and corrosion protection efficiency of the composite coatings.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Energy & Fuels
Palanichamy Sundaram, Anbalagan Sathishkumar, Rajendran Prabakaran, Poongavanam Ganesh Kumar, Sung Chul Kim
Summary: The application of water-phase change material in cold thermal energy storage units has been improved by adding D-sorbitol, polymer polyacrylic acid sodium, and graphene nanoplatelets as agents. These agents enhance the thermal behavior of water-PCM, reducing subcooling degree, improving thermal conductivity, and accelerating freezing/melting processes, thus helping to minimize energy costs.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
P. Sundaram, A. Kalaisselvane, A. Sathishkumar, Poongavanam GaneshKumar, Sung Chul Kim, Rajendran Prabakaran
Summary: This study aims to synthesize stable nano-enhanced phase change materials (NEPCM) using DI water and GNPs with the aid of three different surfactants (CTAB, SDBS, and GA). The dynamic behavior of the NEPCM during solidification and melting in a spherical encapsulation was investigated. The addition of GNPs influenced the heat transfer properties, energy storage density, thermal conductivity, supercooling, solidification rate, and melting duration of the NEPCM.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Ganesh Kumar Poongavanam, Rajendran Prabakaran, Mohammad Salman, Ramalingam Velraj, Sung Chul Kim
Summary: Three unique approaches were adopted in this research to improve the performance of the solar water heater (SWH). The surface of the absorber plate was modified through steel shot-blasting and activated carbon nanomaterials (ACNMs) were used as nanofluids (NFDs) and coating material. The thermal efficiency of the modified SWH increased up to 52.7% with a performance augmentation factor of 1.14.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Environmental Sciences
Shanmugarajan Vigneswaran, Bharani Vijayarangan, Megaraj Meikandan, Duraisamy Sakthivadivel, Govindasamy Kumaresan, Mathiyazhagan Shanmugam, Poongavanam Ganesh Kumar
Summary: The low yield of solar still is the main obstacle to its wide dissemination. This study aims to overcome this issue by increasing the condensation surface area using an acrylic chamber filled with water. The efficiency and evaporation rate of the solar still incorporated with the acrylic basin were compared to a conventional passive solar still. The results showed that the efficiency and evaporation rate of the solar still with acrylic basin were higher, demonstrating its potential for improved productivity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Composites
N. Thangapandian, M. Satthiyaraju, P. Ganeshkumar, Vinothkumar Sivalingam
Summary: This research aims to fabricate polymer matrix composites with improved mechanical, flame retardant, and damping properties by incorporating waste rubber crumbs as the reinforcement. The experimental results confirmed that the addition of rubber crumb significantly improved the damping characteristics of the material. In addition, the rubber crumb-reinforced composites showed improved mechanical and fire-retardant properties.
PROGRESS IN RUBBER PLASTICS AND RECYCLING TECHNOLOGY
(2023)
