Article
Thermodynamics
Emad M. S. El-Said, Ammar H. Elsheikh, Hamed R. El-Tahan
Summary: This paper presents a numerical investigation on shell-and-tube heat exchanger with three configurations of novel segmental curved baffles for thermohydralic performance analysis and enhancement. The results show that the CB3 configuration results in a significant augmentation of the heat exchanger performance compared with the others two configurations for all investigated cases.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Engineering, Chemical
Mehdi Bahiraei, Mohammad Naseri, Ali Monavari
Summary: The irreversibility characteristics of a shell and tube heat exchanger fitted with the unilateral ladder type helical baffle were investigated in this study. It was found that the entropy production rates of both hot and cold fluids increased with the Reynolds number amplification, with the nanofluid containing platelet nanoparticles causing the maximum thermal entropy production. The minimum irreversibility for the whole STHE occurred for the nanofluid containing oblate spheroid particles, which is recommended for use in this STHE.
Article
Thermodynamics
Mehdi Bahiraei, Mohammad Naseri, Ali Monavari
Summary: The study reveals that nanoparticle shape has an impact on the entropy generation rate in a heat exchanger, with platelet-shaped nanoparticles showing the highest entropy production in the hot fluid and Os-shaped particles exhibiting the highest thermal and frictional entropy production in the cold fluid.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
S. A. Marzouk, M. M. Abou Al-Sood, Magda K. El-Fakharany, Emad M. S. El -Said
Summary: This study presents a numerical modeling of shell and tube heat exchangers with various baffle configurations, and it was found that the hybrid and circular ring baffles have the most significant impact on improving thermal and hydraulic performance.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Engineering, Multidisciplinary
Awatef Abidi, S. Mohammad Sajadi
Summary: This numerical study investigates the hydraulic behavior and thermal efficiency of Fe3O4_MWCNT/water hybrid nanofluid in a shell-and-tube heat exchanger. The results show that using nanofluid and baffles can improve the thermal efficiency in the heat exchanger.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Thermodynamics
Ali Akbar Abbasian Arani, Reza Moradi
Summary: This study numerically investigated the effects of different corrugated tube and baffle shapes on the thermal-hydraulic performance of STHEs, revealing that the configuration of DB and OCR+ICR tubes filled with water/CMC/Al(2)O(3) exhibited the highest THPEC value of 1.73. Different mass flow rates resulted in varying heat transfer coefficients and THPEC values for DB and SB configurations. Inner, outer or inner/outer corrugations in tubes significantly increased THPEC values.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2021)
Article
Thermodynamics
Mehdi Bahiraei, Mohammad Naseri, Ali Monavari
Summary: The present study investigates the thermohydraulic characteristics and performance index for nanofluids with various particle shapes in a shell and tube heat exchanger, finding that nanofluids with platelet and OS additives demonstrate the best performance in terms of heat transfer rate, overall coefficient, effectiveness, NTU, and performance index. The study also highlights the significant impact of different particle shapes on heat transfer performance and flow patterns in the shell side of the heat exchanger.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Ali Akbar Abbasian Arani, Hamed Uosofvand
Summary: By comparing different baffle and tube bundle configurations in this study, it was found that angled-elliptical tube bundles performed better in terms of efficiency. For SPHB, the EEC was improved by 20.9% and 10.7% with angled-elliptical tube bundles compared to horizontal and vertical arrangements. Similar trends were observed for DPHB and DPCHSB configurations.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Metallurgy & Metallurgical Engineering
Faraz Afshari, Adnan Sozen, Ataollah Khanlari, Azim Dogus Tuncer
Summary: The study successfully utilized nanofluid in a shell and tube heat exchanger, increasing thermal energy without adding significant pressure drop. The highest heat transfer rate enhancement of 19.1% was achieved using Fe2O3/water nanofluid with a volume fraction of 2%.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Thermodynamics
Ahmet Talat Inan, Hasan Koten, Mehmet Akif Kartal
Summary: This study investigates the impact of different designs of baffle plates on the thermal efficiency and hydraulic performance of shell-tube heat exchangers. The design geometry was analyzed using the ANSYS Fluent program. The results show variations in heat transfer rates per drop of pressure compared to traditional one-piece baffle plates and perforated type baffle plates.
INTERNATIONAL JOURNAL OF LOW-CARBON TECHNOLOGIES
(2022)
Article
Engineering, Multidisciplinary
M. M. Alqarni, Muhammaad Ibrahim, Taghreed A. Assiri, Tareq Saeed, Abd Allah A. Mousa, Vakkar Ali
Summary: The purpose of this study is to design an efficient heat exchanger filled with hybrid nanofluid using numerical methods. The results show that using ribbed tubes and nanofluids can improve the efficiency of the heat exchanger. The study also discusses the method of choosing the optimal grid-mesh and identifies the model with the highest efficiency.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Chemistry, Analytical
Maissa Bouselsal, Fateh Mebarek-Oudina, Nirmalendu Biswas, Abdel Aziz I. Ismail
Summary: The present study focuses on improving the tube/shell heat exchanger by altering the tube's geometrical shape and/or adding nanoparticles in its heat transfer fluid, aiming to maximize efficiency and energy savings. The results show that increasing the nanoparticle concentration and velocity of the heat transfer fluid can enhance the heat exchange rate, and diamond-shaped tubes exhibit superior heat transfer performance. This study is highly significant in solving many heat transfer problems in the industrial field.
Article
Energy & Fuels
Khaled Al-Farhany, Barik Al-Muhja, Karuppusamy Loganathan, Umadevi Periyasamy, Farhan Ali, Ioannis E. Sarris
Summary: The convective heat transfer behavior in an enclosure filled with Cu-water nanofluid with a baffle has been investigated numerically. The results showed that the buoyancy force became more effective, leading to an enhancement of the average Nusselt number. Additionally, the maximum stream function at the core decreased as the baffle inclination angle increased.
Article
Engineering, Multidisciplinary
Alireza Aghaei
Summary: This study numerically investigates the flow and heat transfer of a two-phase Syltherm 800 thermal oil / gamma-AlOOH nanofluid in a baffled shell and tube heat exchanger equipped with a corrugated helical tube. The effects of using a helical tube, corrugations, baffles, and their geometrical parameters are analyzed in terms of thermal-hydraulic performance. The results show that the configuration with specific geometrical parameters and filled with nanofluid at a specific nanoparticle concentration is the most efficient model.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Thermodynamics
Sakthivel Perumal, Dinesh Sundaresan, Rajkumar Sivanraju, Nega Tesfie, Kamalakannan Ramalingam, Sathish Thanikodi
Summary: This study aimed to estimate the overall heat transfer coefficient of a counterflow shell-and-tube heat exchanger by considering the passing of fluid media coefficient inside the tubes, circulating of fluid media coefficient over in the shell, and the resistance of the metal wall. The Taguchi L9 orthogonal array method was used to determine the effective process parameters, with a focus on coil diameter, baffle thickness, and baffle gap. The thickness of the baffle plate was found to be a highly significant factor in this experiment.
Article
Thermodynamics
Manzoore Elahi M. Soudagar, Asif Afzal, Mohammad Reza Safaei, A. Muthu Manokar, Ahmed EL-Seesy, M. A. Mujtaba, Olusegun David Samuel, Irfan Anjum Badruddin, Waqar Ahmed, Kiran Shahpurkar, Marjan Goodarzi
Summary: In this study, experiments were conducted to prepare biodiesel from cottonseed oil and blend it with octanol, with the added improvement of thermal and mass transfer characteristics through functionalized multi-walled carbon nanotubes (MWCNTs). The performance analysis showed that adding octanol and MWCNT nanoparticle can stabilize fuel consumption rate and increase brake thermal efficiency.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Correction
Thermodynamics
Manzoore Elahi M. Soudagar, Asif Afzal, Mohammad Reza Safaei, A. Muthu Manokar, Ahmed I. EL-Seesy, M. A. Mujtaba, Olusegun David Samuel, Irfan Anjum Badruddin, Waqar Ahmed, Kiran Shahapurkar, Marjan Goodarzi
Summary: This passage mentions the issue of incorrect publication of the affiliations of authors in an article.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Review
Thermodynamics
Laxmikant D. Jathar, S. Ganesan, Kiran Shahapurkar, Manzoore Elahi M. Soudagar, M. A. Mujtaba, Ali E. Anqi, Muhammad Farooq, Abdulqhadar Khidmatgar, Marjan Goodarzi, Mohammad Reza Safaei
Summary: The research shows that the performance of solar stills is greatly influenced by climatic, design, and operational parameters, and the optimal productivity output depends on a combination of factors such as solar radiation intensity, still type, and temperature.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Multidisciplinary
Jayachandra S. Yaradoddi, Nagaraj R. Banapurmath, Sharanabasava V. Ganachari, Manzoore Elahi M. Soudagar, Ashok M. Sajjan, Shrinidhi Kamat, M. A. Mujtaba, Ashok S. Shettar, Ali E. Anqi, Mohammad Reza Safaei, Ashraf Elfasakhany, Md Irfanul Haque Siddiqui, Masood Ashraf Ali
Summary: Bioplastics, derived from natural resources, have attracted attention due to their biodegradability. This study focused on producing bioplastic from orange peel, which has high cellulose content. The developed film showed promising results in terms of strength, flexibility, and bio-degradability. Characterization methods confirmed its bio-based nature. A simple and economical process was described for manufacturing this bio-based plastic.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Essam B. Moustafa, Mashhour A. Alazwari, Waheed Sami Abushanab, Emad Ismat Ghandourah, Ahmed O. Mosleh, Haitham M. Ahmed, Mohamed A. Taha
Summary: Two successive methods were used to improve the grain structure and properties of Al 5052 aluminum alloy: the addition of titanium and boron during casting, and single- and double-pass friction stir processing (FSP). The Ti-B modifiers significantly improved the mechanical and physical properties, with only a 3% increase in microhardness. Grain refinement had significant effects on thermal expansion and corrosion rate.
Article
Mathematics
Ashraf M. Zenkour, Mashhour A. Alazwari, Ahmed F. Radwan
Summary: This paper explores the effects of temperature and the nonlocal coefficient on the bending response of functionally graded (FG) nanoplates embedded in an elastic foundation. By using a shear and deformations theory with only four unknown functions, the equations of equilibrium are derived with the help of the principle of virtual displacements. Various factors, such as the nonlocal coefficient, side-to-thickness ratio, aspect ratio, and thermal load, are investigated for their influence on FG nanoplate bending. Furthermore, validation is performed by comparing the results with those available in the literature.
Article
Mathematics
Khalid H. Almitani, Nazira Mohamed, Mashhour A. Alazwari, Salwa A. Mohamed, Mohamed A. Eltaher
Summary: This paper presents exact solutions for the nonlinear bending problem, buckling loads, and postbuckling configurations of a bioinspired helicoidal composite beam. The proposed model is validated and the effects of various factors on the nonlinear bending, critical buckling loads, and postbuckling configurations are discussed.
Article
Mathematics
Mashhour A. Alazwari, Ashraf M. Zenkour
Summary: This article investigates the vibrational behavior of functionally graded plates embedded in a viscoelastic medium and examines the effects of various parameters on the vibrational frequencies.
Article
Green & Sustainable Science & Technology
Hassan Waqas, Umar Farooq, Mohib Hussain, Abdullah K. Alanazi, Ameni Brahmia, Zakia Hammouch, Hala M. Abo-Dief, Mohammad Reza Safaei
Summary: The current study investigates the features of two-dimensional UCM fluid flow with Cattaneo-Christov heat and mass flux, motile microorganisms, and bioconvection. Numerical methods are used to integrate the generated non-linear issue, and the behavior of important physical factors is visually examined. The study reveals the effects of various factors on the velocity field, thermal field, and microbiological field.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Mathematics
Mashhour A. Alazwari, Ashraf M. Zenkour, Mohammed Sobhy
Summary: This paper investigates the hygrothermal buckling of smart graphene/piezoelectric circular nanoplates on an elastic medium under an external electric field. Nonlocal strain gradient theory and differential quadrature method are used to study the effects of graphene weight fraction, elastic foundation parameters, external applied electric field, humid conditions, and boundary conditions on the thermal buckling of the nanocomposite circular nanoplates.
Article
Thermodynamics
Mashhour A. Alazwari, Mohammed Algarni, Mohammad Reza Safaei
Summary: This study aims to improve the thermophysical properties of latent heat thermal energy storage (LHTES) systems by adding various nano-additives to accelerate the melting process. The experimental results show that adding carbon-based nanomaterials significantly reduces the melting time, while metal nanoparticles impair the melting performance. The addition of metal oxide nanoparticles does not provide any substantial advantage to the system.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Materials Science, Multidisciplinary
Ahmed B. Khoshaim, Essam B. Moustafa, Mashhour A. Alazwari, Mohammed A. Taha
Summary: This study fabricated hybrid nanocomposite matrices using aluminum AA7075, graphene nanoplates (GNP), boron nitride (BN), and vanadium carbide (VC). BN and VC acted as secondary reinforcement particles, while graphene (GNP) played a key role in the hybridization process. Friction stir processing (FSP) was utilized for manufacturing the composite matrix, which improved the microstructure's grain refinement and reinforcement, limiting grain growth during dynamic recrystallization. The addition of BN and VC decreased the grain sizes of the nanocomposites significantly. The mechanical characteristics of the hybrid composites were also enhanced due to the uniform dispersion of the reinforcement particles and the homogeneity of the hybridization process.
Article
Thermodynamics
S. Anitha, Mohammad Reza Safaei, S. Rajeswari, M. Pichumani
Summary: This study focuses on the thermal performance of double-tube heat exchangers with two types of hybrid nanofluids, showing that TiO2-γ-AlOOH/water leads to a 50% improvement in heat transfer rate compared to TiO2-γ-AlOOH/ethylene glycol. However, the latter has a higher pumping power by 30%. Further analysis on the energy consumption of heat exchangers with ethylene glycol-based coolants on an industrial scale is needed for future research.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
K. A. Sateesh, V. S. Yaliwal, Manzoore Elahi M. Soudagar, N. R. Banapurmath, H. Fayaz, Mohammad Reza Safaei, Ashraf Elfasakhany, Ahmed EL-Seesy
Summary: The study investigates the impact of nanofluids using Al2O3 nanoparticles on diesel engine performance, showing an improvement in engine efficiency and a reduction in harmful emissions.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Mohamad Nur Hidayat Mat, Norzelawati Asmuin, Md Faisal Md Basir, Mashhour A. Alazwari, Mohammad Reza Safaei
Summary: This study employed a computational couple simulation approach to investigate the influence of divergent nozzle length on single-hose nozzle geometry. The results revealed a relationship between flow velocity and turbulence flow within the nozzle cavity. Different lengths of divergent nozzles were found to result in varying sound pressure levels and sound power levels.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)