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Artykuły w czasopismach na temat „Al2O3 nano fluid”

Autor: Grafiati
Data publikacji: 3 czerwca 2025
Data aktualizacji: 31 lipca 2025

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1

Arifuddin, A., A. A. M. Redhwan, A. M. Syafiq, S. Zainal Ariffin, A. R. M. Aminullah, and W. H. Azmi. "Effectiveness of hybrid Al2O3-TiO2 nano cutting fluids application in CNC turning process." Archives of Materials Science and Engineering 117, no. 2 (2022): 70–78. http://dx.doi.org/10.5604/01.3001.0016.1777.

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The purpose of this study is to evaluate the effectiveness of hybrid Al2O3-TiO2 nano-cutting fluid in the turning process application under the selected significant machining parameters consisting of nano concentration, depth of cut and feed rate. The preparation of aqueous hybrid Al2O3-TiO2 water-based nano-cutting fluids and their application as the cutting fluid in turning operations are undertaken. The Al2O3-TiO2 hybrid nano-cutting fluids were prepared through a one-step method; by dispersing nanoparticles of Al2O3 (average diameter 30 nm) and TiO2 (average diameter 30-50 nm) in CNC coola
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Joshi, Nikheel. "Simulation and Analysis of Double Pipe Heat Exchanger." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (2021): 2388–94. http://dx.doi.org/10.22214/ijraset.2021.35554.

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A heat exchanger is a engineering device used for efficient heat transfer from one fluid to another at different temperatures and thermal in contact. Thermal properties of fluids play a significant role in various cooling and heating uses. Traditional fluids are of low thermal conductivity, so researchers are tried to enhance thermal conductivity by adding nano-particles. The model of double pipe heat exchanger was develop by using ANSYS workbench. Al2O3 mixed with water as a base fluid for analyzed their performance in double pipe heat exchanger. Al2O3 is a excellent material for heat transfe
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Arifuddin, Ariffin, Abd Aziz Mohammad Redhwan, Wan Hamzah Azmi, and Nurul Nadia Mohd Zawawi. "Performance of Al2O3/TiO2 Hybrid Nano-Cutting Fluid in MQL Turning Operation via RSM Approach." Lubricants 10, no. 12 (2022): 366. http://dx.doi.org/10.3390/lubricants10120366.

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Cutting fluids can be used to cool workpieces at high cutting speeds and remove chips from cutting zones. The effectiveness of cutting fluids may be improved with the addition of hybrid nanoparticle dispersion. This study evaluates the effectiveness of an Al2O3-TiO2 hybrid as a cutting fluid in turning operations. The Al2O3-TiO2 hybrid nano-cutting fluid was prepared using a one-step method in computer numerical control (CNC) coolant with concentrations of up to 4%. Utilizing air-assisted nano-cutting fluids injected through a minimum quantity lubrication (MQL) setup, the effectiveness of turn
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Arifuddin, A., A. A. M. Redhwan, A. M. Syafiq, S. Zainal Ariffin, A. R. M. Aminullah, and W. H. Azmi. "Stability analysis of hybrid Al2O3-TiO2 nano-cutting fluids." Archives of Materials Science and Engineering 117, no. 1 (2022): 5–12. http://dx.doi.org/10.5604/01.3001.0016.1392.

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This paper is to study the stability of the current combination of hybrid nano-cutting fluids due to the recent progress in the analysis of nano-cutting fluids, such as the assessment methods for the stability of nano-cutting fluids, have revealed that instability is a common problem associated with nano cutting fluids. Five samples of 0.001 vol% that are suitable to be tested at UV-Vis machine, Al2O3–TiO2 hybrid nano-cutting fluid was prepared using a one-step process with the help of a magnetic stirrer to stir for 30 minutes with different sonication time to determine the best or optimum son
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Kiliç, Bayram, and Osman İpek. "Thermodynamic analysis of absorption cooling system with LiBr-Al2O3/water nanofluid using solar energy." Thermal Science, no. 00 (2020): 340. http://dx.doi.org/10.2298/tsci200817340k.

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Together with the developing nano technology, nano-fluids and nano-particles are used as working fluid in energy applications. It is foreseen that nanoparticles have high heat conduction coefficient and it will increase system performance by using as a working fluid in energy systems. Many studies in the literature show that nano fluids increase the heat transfer rate by improving heat transfer. In this study, a performance analysis of an absorption cooling system using solar energy was performed as numerically. LiBr-Al2O3/water nano-fluid has been used in the cooling system as working fluid.
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Reddy, Krishna, Meenakshi Reddy, and Durga Prasad. "Experimental investigation on the influence of nano-fluids used as HTF in PCM based thermal energy storage system." Thermal Science, no. 00 (2020): 60. http://dx.doi.org/10.2298/tsci191004060r.

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The present study investigated the enhancement of energy conservation under the principles of pure substances that exercise phase change throughout charging and discharging processes. This work primarily focused on the thermal energy storage system, where the working medium charges the PCM?s namely (Paraffin wax & stearic acid) that is normally encapsulated in spherical balls. The potentiality in charging of working medium was examined upon blending HTF (heat transfer fluid) with four nano-particles (Al2O3, CuO, TiO2 & MgO). Several volume concentration levels (0.2%, 0.5% and 0.8%) wer
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Haider, Sajjad, Adnan Saeed Butt, Imran Syed Muhammad, et al. "Impact of nano-particles shapes on Al2O3-water nano-fluid flow due to a stretching cylinder." International Journal of Numerical Methods for Heat & Fluid Flow 30, no. 5 (2019): 2809–32. http://dx.doi.org/10.1108/hff-02-2019-0113.

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Purpose The purpose of this study is to theoretically probe the shape impacts of nano-particle on boundary layer flow of nano-fluid toward a stretching cylinder with heat-transmission effects. The base fluid used for this study is pure water, and aluminum oxide nano-particles are suspended in it. Four different shapes of nano-particle, namely, cylindrical, brick, platelets and blades, are considered to carry out the study. Design/methodology/approach The problem is modelled mathematically and the nonlinear system of equations is attained by using appropriate transmutations. The solution of tra
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8

Nallusamy, S. "Characterization of Al2O3/Water Nanofluid through Shell and Tube Heat Exchangers over Parallel and Counter Flow." Journal of Nano Research 45 (January 2017): 155–63. http://dx.doi.org/10.4028/www.scientific.net/jnanor.45.155.

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Nanotechnology has become one of the fastest growing scientific and engineering disciplines. Nano fluids have been established to possess enhanced thermal and physical properties such as thermal conductivity, thermal diffusivity, viscosity and convective heat transfer coefficients. The aim of this research article is to analyze the overall heat transfer coefficient by doing an experimental investigation on the convective heat transfer and flow characteristics of a nano fluid. In this research, an attempt was made for the nano fluid consisting of water and 1% volume concentration of Al2O3/water
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9

F. Hasan, Ahmed. "Numerical Investigation of Heat Transfer Rate in Helically Coiled Pipe Using Al2O3/Water Nanofluid." Diyala Journal of Engineering Sciences 13, no. 4 (2020): 27–36. http://dx.doi.org/10.24237/djes.2020.13404.

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Nanofluid materials play an important role in the industry nowadays, which has drawn the attention of researchers to enhance the characteristics of the heat transfer of the fluids in the coiled shape heat exchangers. The effect of using Al2O3/water Nano fluid on the characteristic of the heat transfer rate inside the helically coiled pipe was numerically studied at different Reynolds numbers. Moreover, fluid flow analyses were investigated numerically in terms of pressure and velocity profile. The heat transfer enhancement using this Nano fluid has been studied and then compared to pure water
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Ch., Venkata Anvesh*, Kiran Kumar Ch., and Naveen T. "CFD ANALYSIS OF DOUBLE PIPE HEAT EXCHANGER FOR HEAT TRANSFER ENHANCEMENT BY USING NANO FLUIDS." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 3 (2016): 825–34. https://doi.org/10.5281/zenodo.48366.

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A heat exchanger is a device that is used to transfer thermal energy between two or more fluids, between a solid surface and a fluid, between solid particulates and fluid, at different temperatures. Heat exchangers are important engineering devices in many process industries since the efficiency and economy of the process largely depend on the performance of the exchanger. Aluminium Oxide has a more thermal conductivity and is dispersed in water as Base Fluid. Copper Material has a maximum thermal conductivity and is used as a material of Double Pipe Heat Exchanger. The Concentration of the Nano
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11

Emami, S., MH Dibaei Bonab, M. Mohammadiun, H. Mohammadiun, and M. Sadi. "Effect of nano-fluid types on the improvement of heat transfer in a micro-channel with regular hexagonal pattern." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 234, no. 6 (2020): 657–64. http://dx.doi.org/10.1177/0954408920932349.

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Micro channels are widely used in different industries. The investgations on heat transfer improvments of these instruments are of significant inportance. At hte present study, the influence of different nano-fluids and geometrical charectrestics on the thermal performance of a heat sink which is especially for for micro-channels are investigated. In the present study, the authors investigated the Nusselt number and pressure drop in differential geometries and Reynolds numbers (Re). Then the micro-channel was investigated with different heat flux (q).In the first step, the micro-channel was ex
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12

MEMET, Feiza. ""EVALUATION OF THE SPECIFIC HEAT CAPACITY (SHC) OF WATER-Al2O3 NANO FLUIDS BASED ON A THEORETICAL MODEL"." Journal of Marine Technology and Environment, no. 1 (April 1, 2023): 21–24. http://dx.doi.org/10.53464/jmte.01.2023.03.

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"Adding of nanoparticles in a base working agent leads to Nano fluids representing of a new type of working fluid. Due to an increase surface area, there is a gain in the surface area needed for heat transfer between nanoparticles and base fluid. Sein the poor heat transfer properties of water, water base Nano fluids present improved heat transfer performance and require smaller heat exchangers. This paper deals with the estimation of specific heat transfer capacity of water-Al2O3 Nano fluid. The decrease of volume concentration, from 13% to 3%, will reveal a gain in SHC of 27% - for nanoparti
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13

Yu, Jin Ze, Bin Liu, and Zhen Liang Li. "Comparison of Conductivity of Al2O3 Nanofluids between Experiments and Maxwell Model." Advanced Materials Research 668 (March 2013): 571–74. http://dx.doi.org/10.4028/www.scientific.net/amr.668.571.

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The thermal properties of nano-fluids are affected by many factors. The effect of the diameter, mass fraction and volume fraction of Al2O3 in water on the thermal conductivity was measured by the method of hotwire. The diameter of nano-particle of Al2O3 was 10nm, 20nm, 50nm, 100nm and 500nm respectively. The mass fraction of Al2O3 in water was 10%, 12%, 15% and 20%. The results show that the diameter of the particle plays a critical role on thermal properties of the base fluid. And for the mass fraction, it will increase the thermal conductivity of the base fluid. When the size is more than 10
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14

M., Raniammal. "Measurement of pH of the Three Nano Fluid and Development of New Correlations." International Journal of Trend in Scientific Research and Development 2, no. 6 (2018): 1263–72. https://doi.org/10.31142/ijtsrd18834.

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In this study the pH levels of aluminium oxide Al2O3 , silicon dioxide SiO2 , and zinc oxide ZnO nanoparticles dispersed in propylene glycol and water mixture were measured in the temperature range of 00C to 90 C. The volumetric concentration of nanoparticles in these fluids ranged from 0 to 10 for different Nano fluids. The average particle sizes APS considered was from 10 nm to 70 nm. The pH measuring apparatus and the measurement procedure were validated by measuring the pH of a calibration fluid, whose properties are known accurately. The measured pH values agreed within less than ±
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15

Sami Abed, Samir, Mehdi Sediqhi, and Abbas Diwan. "INFLUENCE OF AL2O3 NANO ADDITIVES ON THE VISCOSITY AND THERMAL CONDUCTIVITY OF DOUBLE DISTILLED WATER." Kufa Journal of Engineering 14, no. 2 (2023): 12–23. http://dx.doi.org/10.30572/2018/kje/140202.

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The nano fluid consist of Al2O3 nanoparticles was dissolved by double distilled water (DDW) in three concentrations, 0.5% wt, 1%wt, and 1.5%wt of nanomaterials. The effect of adding nano materials on the viscosity and thermal conductivity was calculated experimentally at room temperature. Some mathematical models were used to calculate the viscosity and the thermal conductivity and compare it with the experimental work. The results showed that viscosity and thermal conductivity increased with increasing concentration of Al2O3 nanoparticles, and there is a great convergence between the theoreti
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16

Kumar, Konka, Ganesan Ramya, Ambikeswari Narayanasamy, et al. "Investigation on the influence of the MWCNT, Al2O3 and CuO nano fluid in the ETSC." Thermal Science, no. 00 (2023): 246. http://dx.doi.org/10.2298/tsci220919246k.

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In this experimental work is based on the comparison on the three different nano particle mixed nano fluid usage influence on the evacuated tube solar collector (ETSC). The distilled water is initially tested to identify the better performance providing mass flow rate then the mass flow rate. There are three nano particles such as MWCNT, Alumina (Al2O3) and Copper oxide (CuO) were used in to create the nano fluid by two step method to use as a heat transfer fluid in the system. There are four different combinations of nano fluid were created based on the 0.05% of volume fraction of nano partic
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17

Vandaarkuzhali, S., J. F. Xavier, R. Ramadoss, V. Jayaseelan, and K. Sudhakar. "Energy performance of R22 blended with nanofluids in refrigeration system." Journal of Optoelectronic and Biomedical Materials 13, no. 2 (2021): 33–44. http://dx.doi.org/10.15251/jobm.2021.132.33.

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Nanofluids are possible heat transfer fluids with enhanced thermophysical characteristics and heat transfer performance for improved performance in many devices. The thermal behaviour of air conditioning systems using various nano-fluids is described in this study. The nano-fluid chosen for testing is CuO, ZnO and Al2O3, which are combined with the R22 refrigerants with a volume fraction of 0.1 %, 0.3 % and 0.5 % to analyse the airconditioning Performance. The magnetic stirrer is used to disperse nano-particles and ultrasound for approximately 4 hours, dispersing the specified quantity into co
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18

Karthikraja, M., P. Kalidoss, S. Anbu, and P. Prabakaran. "Enhanced cooling techniques for Inconel 718 drilling using nano-ionic liquid coolants." Latin American Applied Research - An international journal 55, no. 3 (2025): 333–39. https://doi.org/10.52292/j.laar.2025.3559.

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The manufacturing industry has thoroughly Examined the use of cutting fluids improved by nanotechnology that have higher heat conductivity to increase the efficiency of drilling operations. Due to their diverse physical & chemical characteristics and environmental compatibility, ionic liquids show significant promise for use as cutting fluids. This study examines how well different combinations of ionanofluids with nanoparticles perform as cutting fluids in drilling, by analyzing heat transfer through computational fluid dynamics and Ansys Fluent software. The thermal properties of a mixtu
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Sarathy, Raghav, Dr Badarinarayana K, Karthik Dilipan, and Nithin Krishnappa. "Efficiency Improvement and Comparative Studies of Solar Organic Rankine Systems using Nanofluids." Indian Journal of Energy and Energy Resources 2, no. 1 (2022): 1–9. http://dx.doi.org/10.54105/ijeer.a1020.112122.

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Solar power generation has emerged as one of the most rapidly growing sources of renewable energy. The solar thermal system with a Rankine cycle used to harness solar energy and generate electricity from a low temperature heat source is an emerging technology. The major drawback of solar thermal power generation is its poor efficiency, which is around 10% to 15%. Although prior attempts to improve the efficiency of the solar thermal system and use of Nano fluids in heat transfer applications have been carried out, very little work has been carried out using Nano fluids in Rankine cycle systems
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Raghav, Sarathy, Badarinarayana K. Dr., Dilipan Karthik, and Krishnappa Nithin. "Efficiency Improvement and Comparative Studies of Solar Organic Rankine Systems using Nanofluids." Indian Journal of Energy and Energy Resources (IJEER) 2, no. 1 (2022): 1–9. https://doi.org/10.54105/ijeer.A1020.112122.

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<strong>Abstract: </strong>Solar power generation has emerged as one of the most rapidly growing sources of renewable energy. The solar thermal system with a Rankine cycle used to harness solar energy and generate electricity from a low temperature heat source is an emerging technology. The major drawback of solar thermal power generation is its poor efficiency, which is around 10% to 15%. Although prior attempts to improve the efficiency of the solar thermal system and use of Nano fluids in heat transfer applications have been carried out, very little work has been carried out using Nano flui
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Sridhar Yesaswi, Ch, K. Ajay Krishna, A. Pavan Gopal Varma, K. Girish, and K. Jagadeesh Varma. "Characterization of AL2O3 Nano Particles in Engine Oil for Enhancing the Heat transfer rate." International Journal of Engineering & Technology 7, no. 2.32 (2018): 237. http://dx.doi.org/10.14419/ijet.v7i2.32.15575.

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Selection of suitable engine oils becoming more challenging for automobile engineers. Life of the engine majorly depends upon engine oil, type of fuel being used and various other thermal and structural characteristics of the engine. Dissipation of heat is one of the major consideration in the design of automobile engines. Generally engine oils are used for the lubrication between piston and cylinder but to enhance the cooling effectiveness Nano-particles are added in the lubricant, so that internal heat generation in the engines can be minimized. Nano-fluids are playing a vital role in heat t
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Asep Koswara and Djoko Karmiadji. "Analisis Perpindahan Panas Fluida Pendingin Nanofluids pada Aftercoller Dengan Computational Fluid Dynamics." Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin 11, no. 3 (2021): 178–85. http://dx.doi.org/10.35814/teknobiz.v11i3.2905.

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Mempertimbangkan meningkatnya permintaan dalam teknologi modern, telah dikembangkan dispersi sejumlah kecil zat padat berukuran nano dalam cairan yang disebut nanofluids yang dapat meningkatkan konduktivitas termal fluida. Karakteristik fluida ini menunjukkan sifat termal yang lebih besar dibandingkan dengan cairan pendingin konvensional untuk aplikasi pemindah panas yang banyak digunakan saat ini. Salah satu jenis nanofluids yang banyak digunakan adalah Al2O3 (alumina). Penelitian ini untuk melihat sejauh mana dampak penggunaan nanofluids pada proses pendinginan udara yang digunakan untuk pro
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Misra, R. K. "Performance evaluation of Vapour Compression Refrigeration system using eco friendly refrigerants in primary circuit and nanofluid (Water-nano particles based) in secondary circuit." International Journal of Advance Research and Innovation 2, no. 2 (2014): 167–84. http://dx.doi.org/10.51976/ijari.221424.

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This paper describes thermal modeling of Vapor Compression Refrigeration System using R134a in primary circuit and AL2O3-Water based nanofluids in secondary circuit. The model uses information of the secondary fluids input conditions geometric characteristics of the system, size of nanoparticles and the compressor speed to predict the secondary fluids output temperatures, the operating pressures, the compressor power consumption and the system overall energy performance. Such an analysis can be conveniently useful to compare the thermal performance of different nano particles (Cu, Al2o3, Tio2
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Rajeswaran, Siva Subramanian, Kumaresan Govindasamy, Selvakumar Pandiaraj, and Kamatchi Rajaram. "Experimental study on heat transfer characteristics of dimpled surface Thermosyphon with Al2O3 nanofluid." Thermal Science, no. 00 (2023): 267. http://dx.doi.org/10.2298/tsci230816267r.

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The current research on boiling in heat transfer applications has been increased due to the effective heat dissipation ratein solar applications, cooling of new generation electronic chips with the goal of improving performance by controlling physical factors.Thermosyphons are one among the phase change medium which has the higher critical heat flux to accelerate the heat transfer. Current work in Thermosyphonfocuses on the design, fabrication and performance analysis of dimpled Thermosyphonwith certain variables like surface area of heat exchange, composition of working fluid and setup angle.
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Tuan, Ngo Minh, Tran Minh Duc, Tran The Long, Vu Lai Hoang, and Tran Bao Ngoc. "Investigation of Machining Performance of MQL and MQCL Hard Turning Using Nano Cutting Fluids." Fluids 7, no. 5 (2022): 143. http://dx.doi.org/10.3390/fluids7050143.

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Cutting fluids used in the metal machining industry have exerted serious impacts on the environment and human health. In addition, the very high cutting heat and forces in machining-hardened steels have been a growing concern in the metal cutting field. Hence, new, eco-friendly cooling and lubricating techniques are necessary to study and develop. Minimum quantity lubrication (MQL) and minimum quantity cooling lubrication (MQCL) using nano cutting fluids have been proven as alternative solutions for machining difficult-to cut materials while retaining an environmentally friendly characteristic
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Rangari, Aashish Kumar, and Gouraw Beohar. "Heat Exchanger Performance Improvement through Double Pipe Counter Flow type by using Different Nano Fluids." International Journal for Research in Applied Science and Engineering Technology 11, no. 2 (2023): 505–9. http://dx.doi.org/10.22214/ijraset.2023.49075.

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Abstract: The main purpose of present research work is to improve performance of double pipe heat exchanger performance. In this present work two types of nano fluid s taken :Al2O3 and CuO with a mixture of water and Ethylene Glycol as a base fluid. Al2O3 and CuO nanoparticles of concentration 0.05%, 0.15% and 0.3% were added to the base fluid. Overall performance is done by using ANSYS Fluent. The overall heat transfer coefficient, heat transfer rate, and temperature decrease are the basic characteristics that are taken into account while evaluating the results
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Ashraf, Asifa, Zhiyue Zhang, Tareq Saeed, Hussan Zeb, and Taj Munir. "Convective Heat Transfer Analysis for Aluminum Oxide (Al2O3)- and Ferro (Fe3O4)-Based Nano-Fluid over a Curved Stretching Sheet." Nanomaterials 12, no. 7 (2022): 1152. http://dx.doi.org/10.3390/nano12071152.

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In this work, the combined effects of velocity slip and convective heat boundary conditions on a hybrid nano-fluid over a nonlinear curved stretching surface were considered. Two kinds of fluids, namely, hybrid nano-fluid and aluminum oxide (Al2O3)- and iron oxide (Fe3O4)-based nano-fluid, were also taken into account. We transformed the governing model into a nonlinear system of ordinary differential equations (ODEs). For this we used the similarity transformation method. The solution of the transformed ODE system was computed via a higher-order numerical approximation scheme known as the sho
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Gunale, Rahul B., Ashish S. Gajare, Omkar D. Khollam, Aakash G. Gawade, and Sanchit S. Salvi. "Experimental Evaluation of Nanofluid for Improved Cooling Efficiency in an AL Mini Channel Heat Sink." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (2022): 3400–3406. http://dx.doi.org/10.22214/ijraset.2022.43146.

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Abstract: Efficient heat transfer has become major need these days. In this thesis, both experimental and CFD investigations have to be carried out to evaluate the cooling performance of a mini-channel consisting of fins on upper surface of flat plate. Nano fluids contain a small fraction of solid nano particles in base fluids flowing through groves in bottom plate attached with heater at base. Nano fluids cools small channel heat sinks, have been anticipated to be an excellent heat dissipation method for the next generation electronic devices. Computational Fluid Dynamics (CFD) simulations is
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Darmawan, Darmawan, Dani Gustaman Syarif, and Djony Izak Rudyardjo. "Synthesize and Characterization of Aluminum Oxide (Al2O3) Nanoparticle from Aluminum Waste for Nano fluid Application." Indonesian Applied Physics Letters 1, no. 1 (2020): 1. http://dx.doi.org/10.20473/iapl.v1i1.21330.

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The research of Synthesis and Characterization of Aluminum Oxide (Al2O3) Nanoparticle from Aluminum Waste for Nanofluids has been done. The purpose from this research are knowing the influence of heating temperature tonanoparticle Al2O3 forming and the influence of composition to physico-chemical characteristic of nanofluids Al2O3.The heating temperature variation that that use of 6000C, 7000C, and 8000C. While the composition variation that use of 0.1 gram, 0.2 gram, 0.3 gram, and 0.5 gram. Aluminium Oxide nanoparticle were synthesized by heating Al(OH)3 as precursor derived from aluminum was
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Tayeb, Naas Toufik, Shakhawat Hossain, and Chati Tounsi. "Heat transfer behaviour of mixing nano-non-Newtonian fluid in a chaotic micromixer." All Sciences Abstracts 1, no. 2 (2023): 27. http://dx.doi.org/10.59287/as-abstracts.1217.

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The hydrodynamic and thermal behaviors of Nano-Non-Newtonian fluids were examined using three-dimensional numerical simulations of a unique passive micromixer. To comprehend the quantitative and qualitative fluid fraction distributions with temperature homogenization, mass and heat transport properties of two heated fluids have been examined. For varied Reynolds numbers, the influence of fluid behavior and various Al2O3 nanoparticle concentrations on the pressure drop and thermal mixing capabilities were examined. Using CFD, the simulation of performance enhancement was run in intervals of var
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Danso, D. K., B. M. Negash та E. Padmanabhan. "First principle elastic property study of α-AI2O3 for application as nano-proppants". IOP Conference Series: Earth and Environmental Science 1003, № 1 (2022): 012021. http://dx.doi.org/10.1088/1755-1315/1003/1/012021.

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Abstract Slickwater hydraulic fracturing creates complex fracture networks in unconventional shale gas reservoirs. The use of spherical micron and nano-sized particles have been proposed as suitable sized materials to keep nano fractures conductive. Few materials have been investigated for occupying induced unpropped nano fractures. In this study, the nanomechanical properties of α-Al2O3, a commonly used fracture fluid nanomaterial is calculated using the density functional theory to study its pressure-dependent elasticity and hardness. The elastic properties of α-Al2O3 are calculated within t
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Katoch, Anirudh, Fadil Abdul Razak, Arjun Suresh, B. S. Bibin, Edison Gundabattini, and Mohd Zamri Yusoff. "Performance of Nanoparticles in Refrigeration Systems: A Review." Journal of Nanofluids 11, no. 4 (2022): 469–86. http://dx.doi.org/10.1166/jon.2022.1809.

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In this paper viability of the Nano-refrigerants as a replacement for conventional coolants in bringing down energy consumption and thereby contribute to the green economy has been reviewed. The influence of the % of nanoparticle concentration in thermal conductivity, heat transfer characteristics, and system performance in a refrigeration system is analysed. In this paper, the use of MHD and NEPCM were also discussed and reviewed for their useful impact in the field of nano refrigeration. Review analysis indicated that the maximum coefficient of performance, i.e., 18.75% of enhancement, was o
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Om, Prakash, and Kumar Pankaj. "CFD Analysis for Heat Transfer Enhancement Using Nano Fluids in Double Pipe Heat Exchanger." International Journal of Trend in Scientific Research and Development 4, no. 2 (2020): 316–22. https://doi.org/10.5281/zenodo.3843188.

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This work includes the effect of different working fluid on the performance of heat exchanger. For analysing the effect of different working fluid, it considered air, water and different nanofluids and measure the Nusselt number and friction factor for each case. It also analysed the effect of change in Reynolds number on the performance of heat exchanger for different working fluids. For analysing the effect of change in Reynolds number, it considered four different Reynolds numbers that is 10000, 12000, 14000 and 16000. For performing the numerical analysis ANSYS fluent was used. Through num
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Yogesh, Sharma, and Yadav Neeraj. "Enhancement in Heat Exchange Process in a Shell and Tube Heat Exchanger using Nano-Particles." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 3 (2020): 1791–95. https://doi.org/10.35940/ijeat.C4783.029320.

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Nanoparticles and nano-fluids are having its significant role in transforming and improvising the existing tools and techniques of science and other research. This experimental study deals with the parametric analysis of Al2O3 of size 20-30 nm and CuO of size 30-50 nm nanoparticles to improve the effectiveness of a shell and tube heat exchanger. Nanoparticles used in heat exchangers improved performance through better heat transfer characteristics. An experimental investigation was done on the forced convective heat transfer and flow characteristics of the nano-fluid flowing in a horizontal sh
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Li, Yun-Xi, Chun-Liu Li, and Ming-Ju Huang. "Effect of pH on the holographic properties of Al2O3 nanoparticle dispersed acrylate photopolymer." International Journal of Modern Physics B 28, no. 11 (2014): 1450076. http://dx.doi.org/10.1142/s0217979214500763.

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Several different pH of Al 2 O 3 nano-fluid were prepared using dispersant and doped into polyvinyl alcohol (PVA)/acrylamide (AA) based photopolymers where the photopolymers were exposed with 647 nm Ar + Kr + laser to study its holographic properties. The research shows that the incorporation of Al 2 O 3 nanoparticles (NPs) improves the holographic characteristics of sample, where the pH has an effect to the dispersion of Al 2 O 3 NPs in the photopolymer. When the pH of Al 2 O 3 nano-fluid is about 7, the diffraction efficiency of the sample can be raised to 93.8%, the maximum refractive index
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Wulandari, I. Gusti Agung Ayu Desy. "Pengaruh Nano Fluida terhadap Temperatur Kondensor Cascade Straight Heat Pipe." Jurnal METTEK 5, no. 2 (2020): 79. http://dx.doi.org/10.24843/mettek.2019.v05.i02.p03.

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Perkembangan teknologi Central Processing Unit (CPU) pada komputer telah mengarah pada smart technologies yaitu memiliki kinerja yang semakin baik namun dengan dimensi yang diperkecil. Dengan pengurangan dimensi tersebut, maka dapat menyebabkan peningkatan daya yang sangat signifikan dan peningkatan fluks kalor pada CPU yang tinggi. Pada penelitian ini, cascade straight heat pipe dirancang untuk sistem pendingin CPU yang lebih baik tanpa memerlukan tambahan daya dalam pengoperasiannya. Dari data penelitian yang didapat, kinerja termal terbaik ada pada cascade straight heat pipe dengan fluida k
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Gill, Jatinder, Damola S. Adelekan, and Olayinka S. Ohunakin. "Experimental Investigation of Vapour Compression Refrigeration Systems using 0.4g 13nm Al2O3-lubricant based LPG Refrigerant as Working Fluid." Thermal Science and Engineering 3, no. 1 (2020): 26. http://dx.doi.org/10.24294/tse.v3i1.454.

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Application of nanoparticles have been proven to aid heat transfer in engineering systems. This work experimentally investigated the performance of a domestic refrigerator under the influence of Al2O3 nanoparticles dispersed in mineral oil based lubricant at different charges (40, 60 and 80 g) of LPG refrigerant. The performance of the system was then investigated using test parameters including: power consumption, evaporator air temperature (pull-down time), to attain the specified International Standard Organisation (ISO) requirement for standard evaporator air temperature with small refrige
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Kumar, Suresh, Sushila Choudhary та Anil Sharma. "On Entropy Generation and Heat Transfer Due to Magneto-Marangoni Convective γ Al2O3-H2O/C2H6O2 Nanofluid Flow Over a Porous Surface". Journal of Nanofluids 12, № 7 (2023): 1936–50. http://dx.doi.org/10.1166/jon.2023.2103.

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A numerical analysis is carried out for water/Ethylene Glycol based γ Al2O3 nanofluid movement over a horizontal permeable sheet placed within a porous medium using MATLAB package Bvp4c solver. Other flow controlling conditions like Non-linear thermal radiation and uniform Magnetic field are also considered for this study. The present study is novel in terms of entropy generation and heat transfer rate investigation for mentioned fluid system in the existence of dissipation (an irreversible process) and heat generation/absorption impact. First, a mathematical pattern is prepared in the form of
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Majeed, Amer Hameed, and Yasmin Hamed Abd. "Performance of Heat Exchanger with Nanofluids." Materials Science Forum 1021 (February 2021): 160–70. http://dx.doi.org/10.4028/www.scientific.net/msf.1021.160.

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The effect of adding nanomaterial of aluminum oxide (Al2O3), titanium oxide (TiO2) and zirconium oxide (ZrO2) in different concentrations of 0.25, 0.5, 0.75, 1.0, and 1.25 g/L to the cold fluid (water) turbulently flowing with different flow rates of 75, 100, 125, 150, and 175 L/min in tube side countercurrently to hot water flowing with a constant flow rate of 60 L/min in the shell side of shell and tube heat exchanger on the heat transfer rates and overall heat transfer coefficients are experimentally studied. It is found that the addition of nanomaterials gives rise to outlet cold (nano) fl
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Kara, Fuat. "Investigation of the Effect of Al2O3 Nanoparticle-Added MQL Lubricant on Sustainable and Clean Manufacturing." Lubricants 12, no. 11 (2024): 393. http://dx.doi.org/10.3390/lubricants12110393.

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In this study, in order to improve the characteristics of the vegetable-based cutting fluids used in the MQL technique and increase the machining performance of MQL and its positive effects on sustainable manufacturing, the effects of the MQL method with nano-Al2O3 additives on surface roughness (Ra) and cutting temperature (Ctt) were examined through turning experiments carried out by adding nano-Al2O3 to the vegetable-based cutting fluid. For this purpose, machining tests were carried out on hot work tool steel alloyed with Cr-Ni-Mo that has a delivery hardness of 45 HRC. In hard machining e
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Singh, Paritosh. "Performance Analysis of Shell and Tube Type Heat Exchanger Using Aluminium Oxide (Al2O3) Nano-Particle." International Journal for Research in Applied Science and Engineering Technology 9, no. 9 (2021): 157–64. http://dx.doi.org/10.22214/ijraset.2021.37944.

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Abstract: Research in convective heat transfer using suspensions of nanometer sized solid particles in a base fluid started only over the past decade. Recent investigations on nanofluids, as such suspensions are often called, indicate that the suspended nanoparticles markedly change the transport properties and heat transfer characteristics of the suspension. The very first part of the research work summarizes about the various thermo physical properties of Al2O3 Nanofluid. In evacuated tube solar water heating system nanofluids are used as primary fluid and DM water as secondary fluid in Shel
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P.Prem, Kumar* P.V.S.Murali Krishna. "IMPROVING PERFORMANCE OF AUTOMOBILE RADIATOR BY ADDING AL2O3(ALUMINA)NANOFLUID TO ETHYLENE GLYCOL BASED FLUID COOLANT." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 5 (2017): 445–52. https://doi.org/10.5281/zenodo.573548.

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In this paper, we observed that the enhancement of forced convective heat transfer rate of aluminium automobile radiator after using Al2O3 nano fluid with ethylene glycol base fluid coolant. In this experimental investigation , we consider volume fraction and the flow rate of coolant as parameters. we take volume concentration of Al2O3 nanoparticles in the range of 0.01 to 0.12 % and base fluid is 15 liters. We have chosen sonication process to mix Al2O3 nanoparticle with water using ultrasonic sonicator for 2 hours for getting stable suspension in water. Heat transfer rate were increased by i
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Mohamed Ferozdheen, S. S., C. Kailasanathan, and P. P. Pandian. "Experimental investigations for the effect of sonication time on nanophase change material (sodium carbonate decahydrate with alumina nanoparticles) used in solar energy storage system." Chalcogenide Letters 18, no. 10 (2021): 565–83. http://dx.doi.org/10.15251/cl.2021.1810.565.

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In this work, the execution of experimental investigations is to agree on the warm conductivity resting on the entire concept of a solar vigor storage gadget with relatively a numeral Al2O3 nanoparticles volume fraction in SCD-PCM and the effects of few physical limits. The usage of ultrasonically helps uses of Al2O3 nanoparticles dispersing them into SCD base fluids for making geared up Nano-PCM for a somewhat numeral period from 0 to 180 minutes. This work summarizes the crucial conclusion associated with a relative quantity consequence for constraints similar to the particles extant divisio
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Gobinath, Natarajan, and C. P. Karthikeyan. "Heating and Cooling Mechanisms of Nano Fluids: Experimental Investigation." Nano Hybrids and Composites 17 (August 2017): 44–54. http://dx.doi.org/10.4028/www.scientific.net/nhc.17.44.

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Heat transfer mechanisms and migration characteristics of volatile nanoparticles in a boiling fluid are complex phenomenon to understand. Boiling heat transfer mechanisms of the nanofluid (Al2O3/n-pentane) and migration characteristics of volatile Al2O3 nanoparticle are studied in this paper. Experiments were carried out using a sealed glass beaker partially filled with the nanofluid. Heat flux conditions and mass fractions of nanoparticles were varied to study the heat transfer mechanisms and migration characteristics of particles. Accuracy of experiments was checked using heat transfer corre
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Habib, Khairul, Mohammed Ahmed, Ahmed Qays Abdullah, Omer A. Alawi, Balaji Bakthavatchalam, and Omar A. Hussein. "Metallic Oxides for Innovative Refrigerant Thermo-Physical Properties: Mathematical Models." Tikrit Journal of Engineering Sciences 29, no. 1 (2021): 1–15. http://dx.doi.org/10.25130/tjes.29.1.1.

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Nano-refrigerant is announced to become an excellent refrigerant, which often improves heat transfer efficiency in the cooling systems. Different materials can be applied to be suspended in traditional coolants in the same way as nanoparticles. In this comprehensive research, mathematical modeling was used to investigate the effect of suspended nanoparticles (Al2O3, CuO, SiO2 and ZnO) on 1,1,1,2-Tetrafluoroethane, R-134a. The thermal conductivity, dynamic viscosity, density and specific heat capacity of the nano-refrigerant in an evaporator pipe were investigated. Compared to conventional refr
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Misra, R. S. "Irreversibility Reduction in Vapour Compression Refrigeration Systems Using Al2O3 Nano Material Mixed in R718 as Secondary Fluid." International Journal of Advance Research and Innovation 3, no. 2 (2015): 127–35. http://dx.doi.org/10.51976/ijari.321528.

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The several methods are available in the literature for improving first law efficiency in terms of coefficient of performance. The second law efficiency is helped for finding the irreversibilities the systems. The uses of nano refrigerants in the vapour compression refrigeration play a very important role for reducing irreversibility in the system and improving its thermodynamic performances. This paper describes thermal modelling of vapour compression refrigeration system using energy - exergy analysis. In this system, the utility of ecofriendly twelve refrigerants in primary circuit is highl
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Siva Reddy, E., R. Meenakshi Reddy, and K. Krishna Reddy. "Experimental Study on Thermal Efficiency of Parabolic Trough Collector (PTC) Using Al2O3/H2O Nanofluid." Applied Mechanics and Materials 787 (August 2015): 192–96. http://dx.doi.org/10.4028/www.scientific.net/amm.787.192.

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Dispersing small amounts of solid nano particles into base-fluid has a significant impact on the thermo-physical properties of the base-fluid. These properties are utilized for effective capture and transportation of solar energy. This paper attempts key idea for harvesting solar energy by using alumina nanofluid in concentrating parabolic trough collectors. An experimental study is carried out to investigate the performance of a parabolic trough collector using Al2O3-H2O based nanofluid. Results clearly indicate that at same ambient, inlet temperatures, flow rate, concentration ratio etc. hik
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Nihad Pashazada, Shirin Bakhshaliyeva, Nihad Pashazada, Shirin Bakhshaliyeva. "RESEARCH NEW MATERIALS FOR DURABLE OIL WELL CEMENTING." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 148, no. 02 (2024): 13–21. http://dx.doi.org/10.36962/pahtei148022024-13.

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Oil wells are secured after drilling by strings of steel pipes (casing) lowered into them. The outer diameter of the pipes is several centimeters smaller than the diameter of the well, and a space remains between the column and the wall of the well, which must subsequently be filled with cement. After the cement sets, the walls of the well are formed. In some cases, there are situations that lead to a work stoppage. Usually, this is caused by improper transportation of cement, poor testing of the cement slurry in the laboratory, the cement did not have time to harden, etc. In this article, we
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Veeramanikandan, K., S. Vignesh, B. Pitchia Krishnan, M. Mathanbabu, and M. Ashokkumar. "Investigation of Al2O3-water nano fluid flow through the circular tube." Materials Today: Proceedings 46 (2021): 8288–95. http://dx.doi.org/10.1016/j.matpr.2021.03.253.

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V. Kranti, Raj Sameer, and Kumari A. Swarna. "Experimental analysis on heat exchanger using Al2O3-CuO hybrid nano coolant." i-manager's Journal on Mechanical Engineering 12, no. 2 (2022): 10. http://dx.doi.org/10.26634/jme.12.2.18474.

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This research work gives the insight on heat transfer performance of nano coolants using hybrid nanoparticles Al2O3-CuO in mixture ratio 20:80, 50:50, 80:20 respectively, at 0.1 vol% of 5 liter base fluid (mono ethylene glycol (MEG)+ deionized water (DW)) on a double pipe shell and tube heat exchanger. Nanoparticles were prepared using ball milling, magnetic stirring and ultra-sonication. The average diameter of crystallites of hybridized nanoparticles was in the range of 25 nm to 35 nm, determined using an X-ray diffractometer. Specific heat capacity, density and kinematic viscosity were dete
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