Article
Thermodynamics
C. J. Ho, Chu-Yun Cheng, Tien-Fu Yang, Saman Rashidi, Wei-Mon Yan
Summary: This experimental study explores the cooling performance of alumina/water nanofluid flow in a heated copper tube with constant heat flux. Results show that increasing the inlet temperature of fluid and nanoparticles concentration lead to higher heat transfer effectiveness ratio and profit index. Experimental data are in good agreement with theoretical data and numerical results.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
G. P. Ashwinkumar, S. P. Samrat, N. Sandeep
Summary: This paper examines the impact of nonlinear thermal radiation on 2-D magnetohydrodynamic flow of hybrid nanoliquid across two distinct geometries and discusses the resulting flow and thermal distributions. The results show that nonlinear thermal radiation enhances thermal distributions and decreases heat transfer rates, with differences observed between flow over a cone and flow over a plate. Additionally, the thermal transport rate is significantly higher for flow above a cone compared to flow over a plate.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Dan Zheng, Jianqiang Du, Wei Wang, Jiri Jaromir Klemes, Jin Wang, Bengt Sunden
Summary: This research investigates the convective heat transfer and hydraulic resistance of smooth and corrugated double-tube heat exchangers at different flow rates. The combination of a thread structure on the outer tube side and nanofluids on the inner tube side improves the overall heat transfer performance. The best combination is a 4 mm thread pitch with a 1.5 wt% SiC-water nanofluid, resulting in a 59% increment in the comprehensive performance index.
Review
Thermodynamics
Zoljargal Narankhishig, Jeonggyun Ham, Hoseong Lee, Honghyun Cho
Summary: The review covers experimental and numerical investigations on the convective heat transfer of various nanofluids, especially hybrid nanofluids. Performance optimization of nanofluid heat and mass transfer is influenced by factors such as nanofluid characteristics, synthesis method, magnetic force, nanoparticle concentration and size, and Reynolds number. Studies have shown that the magnetic field in magnetic nanoparticles can significantly enhance the convective heat transfer performance of nanofluids.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Kishor Deshmukh, Suhas Karmare, Pradeep Patil
Summary: The convective heat transfer performance of U-pipe evacuated tube solar thermal collector with TiN nanofluid was investigated in this study. TiN nanoparticles with sizes of 40-50 nm were dispersed in distilled water at different volume concentrations. The stability and thermophysical properties of TiN nanofluid were experimentally measured. The experimental investigation included the convective heat transfer coefficient, friction factor characteristic, and solar thermal efficiency at different volume concentrations and mass flow rates. The performance of the solar thermal collector was tested under outdoor conditions. A correlation was proposed to determine the Nusselt number, friction factor, and solar thermal efficiency in laminar flow. The TiN nanofluid was recommended for industrial solar thermal applications due to its notable improvement in convective heat transfer performance despite the friction factor penalty.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Khong Vu Quang, Nguyen Duy Tien, Vu Minh Dien, Le Manh Toi, Le Dang Duy
Summary: The research team is working on designing and manufacturing a combined system that utilizes the thermal energy of Internal Combustion Engines to distill fresh water for Vietnamese offshore fishing vessels. The experimental process shows that heat energy emission changes affect the system's performance, while a reasonable design can greatly improve waste heat recovery efficiency.
APPLIED THERMAL ENGINEERING
(2021)
Article
Engineering, Chemical
Farrukh Abbas, Hafiz Muhammad Ali, Muhammad Shaban, Muhammad Mansoor Janjua, Tayyab Raza Shah, Mohammad Hossein Doranehgard, Majid Ahmadlouydarab, Farukh Farukh
Summary: The study investigated the use of a novel hybrid nanofluid to enhance heat transfer in an automotive radiator, showing an increase in heat transfer rate by up to 26.7% under specific conditions. However, excessive nanoparticle concentration resulted in performance deterioration.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Energy & Fuels
Rishabh Agarwal, Rajesh Maithani, Sachin Sharma, Anil Kumar, Ajay Kumar
Summary: This study optimized the parameters of twisted tape insert in a heat exchanger tube with SiO2/H2O based nanofluid flow. The goal was to maximize heat transfer while minimizing pressure drop. The optimized parameter values for a specific range of Reynolds number were found to be W-T/D-T of 0.8, L-T/W-T of 1.74, phi of 1.25 vol.%, and Re of 17,000.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Thermodynamics
M. A. Kedzierski, L. Lin
Summary: This paper presents a simple correlation for predicting the local convective boiling heat transfer within a microfin tube. By gathering a large amount of flow boiling measurements and adjusting the database, the correlation can accurately predict the behavior for various refrigerants and hydraulic diameters.
ASME JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Chunhua Min, Haizhu Li, Xiaomeng Gao, Kun Wang, Liyao Xie
Summary: This paper proposed a novel method to improve heat exchanger thermal performance by combining vortex generators and twisted belts, with numerical studies on circular tube thermo-hydraulic characteristics to determine optimal parameters. The results showed that using a combination of staggered arrangement, optimal twist ratio of 4, attack angle of 75 degrees, and pitch of 1.5D can significantly enhance the heat exchanger performance.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Seyed Shahab Mozafarie, Kourosh Javaherdeh, Omid Ghanbari
Summary: This study indicates that in a circular finned double-pipe heat exchanger, simplifying the design can enhance the heat transfer efficiency of nanofluids, but the thermal performance of non-Newtonian fluids decreases when inserts are used.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Mechanics
Rasa Soleimani, Mohammad Zargartalebi, Jalel Azaiez, Ian D. Gates
Summary: The study found that the two-component model provides more accurate predictions of heat transfer performance due to the direct influence of nanoparticles' distribution on the hydrodynamics. The non-monotonic variations in average Nusselt number and friction factor with respect to geometrical parameters provide insight for an optimal design guideline.
Article
Multidisciplinary Sciences
Mirza Naveed Jahangeer Baig, Nadeem Salamat, Salman Akhtar, Sohail Nadeem
Summary: This study investigates the oblique stagnation point flow phenomenon of a rate-type Maxwell fluid using the Cattaneo-Christov double diffusion theory. The analysis includes mass and heat transfer, considering the effects of chemical reactions and thermal radiation. The results show that the thermal relaxation time parameter decreases the rate of heat transfer, while the thermal Biot number enhances the rate of heat transport.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Multidisciplinary
S. T. Jaya Suthahar, S. Jaisankar, S. Saravanan
Summary: This study analyzes the heat transfer and friction characteristics of a thermosyphon solar flat plate collector using Al2O3/water nanofluid as the working fluid with a helical twist insert. The thermal behavior, heat augmentation, and pressure drop characteristics of the modified collector are compared with a conventional riser tube collector. The results show that the modified nanofluid collector has better thermal performance in terms of higher heat removal rate.
MATERIALS TECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
C. J. Ho, Chu-Yun Cheng, Tien-Fu Yang, Saman Rashidi, Wei-Mon Yan
Summary: This study explores the cooling effectiveness and entropy production of aluminum oxide-water nanofluid in circular tubes with wall conduction effects. Results show that heat transfer effectiveness ratios increase with higher input temperatures of fluid and nanoparticle concentrations. Additionally, local entropy production ratios are mostly below unity, indicating the beneficial use of nanofluids for reducing system irreversibility.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
M. Rastegar, K. Rahmati Shadbad, A. R. Khataee, R. Pourrajab
ENVIRONMENTAL TECHNOLOGY
(2012)
Article
Thermodynamics
A. Noghrehabadi, R. Pourrajab, M. Ghalambaz
HEAT AND MASS TRANSFER
(2013)
Article
Thermodynamics
Aminreza Noghrehabadi, Rashid Pourrajab, Mohammad Ghalambaz
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2012)
Article
Engineering, Mechanical
Aminreza Noghrehabadi, Mohammad Reza Saffarian, Rashid Pourrajab, Mohammad Ghalambaz
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2013)
Article
Chemistry, Physical
Rashid Pourrajab, Aminreza Noghrehabadi, Ebrahim Hajidavalloo, Mohammad Behbahani
JOURNAL OF MOLECULAR LIQUIDS
(2020)
Article
Thermodynamics
Rashid Pourrajab, Aminreza Noghrehabadi, Mohammad Behbahani, Ebrahim Hajidavalloo
Summary: The synergistic effect of MWCNTs-COOH and Ag nanoparticles on the thermal conductivity improvement of hybrid nanofluids is experimentally demonstrated in this paper. A new thermal conductivity ratio correlation is suggested based on empirical data, showing high accuracy and capability in modeling thermal conductivity ratio data.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Automation & Control Systems
Majid Gholizadeh, Mehdi Jamei, Iman Ahmadianfar, Rashid Pourrajab
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
(2020)
Article
Thermodynamics
Mehdi Jamei, Rashid Pourrajab, Iman Ahmadianfar, Aminreza Noghrehabadi
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2020)
Article
Thermodynamics
Rashid Pourrajab, Iman Ahmadianfar, Mehdi Jamei, Mohammad Behbahani
Summary: This research accurately predicted the thermal conductivity of hybrid nanofluids using locally weighted linear regression, outperforming other models in terms of prediction accuracy. Sensitivity analysis identified volume fraction, temperature, and nanoparticle size as the most important factors influencing thermal conductivity.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
Rashid Pourrajab, Aminreza Noghrehabadi, Mohammad Behbahani
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2020)
Article
Thermodynamics
Rashid Pourrajab, Aminreza Noghrehabadi, Mohammad Behbahani
Summary: The study synthesized a high-performance nanocomposite to enhance the efficiency and overall performance of high heat flux systems. Experimental results showed that adding the nanocomposite at an appropriate weight fraction concentration could significantly improve heat transfer efficiency, with the thermal performance factor proportional to the Reynolds number and nanocomposite concentration.
APPLIED THERMAL ENGINEERING
(2021)