Botha phd thesis, department of chemistry, university of the western cape low thermal conductivity is a primary limitation in the development of energyefficient heat transfer fluids that are required in numerous industrial sectors. Mechanical seminar topics huge collection of mechanical seminar topics, reports and ppt. The seminar report first, we discuss the preparation of nanofluids. Comparison of the thermal conductivity of common liquids. Nanofluids 8, 16171631 2019 full text pdf purchase article articles nanofluid heat and mass transfer in a deformable and peristaltic pump aamir ali, y. A nanofluid is a fluid containing nanometersized particles, called nanoparticles. Nanofluids with enhanced thermal transport properties. K et al international journal of environmental sciences volume 3 no. The results showed that different copper salts resulted in different particle morphology. Nanofluids can be produced by either one step or two steps methods. Haghighi, mohsin saleemi, nader nikkam, rahmatollah khodabandeh, muhammet s.
Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. The influences of synthesis parameters, such as kinds and amounts of copper salts, reaction time, were studied. The results show that nanofluids possess improved thermal transport properties and it has been experimentally proved that nanofluids have potential as nextgeneration advanced heat transfer fluids. Application of nanofluids in heat transfer intechopen. Nano fluids full seminar reports, pdf seminar abstract, ppt, presentation. Heat transfer enhancement using nanofluids an overview shanthi r a, shanmuga sundaram anandan b and velraj ramalingam c by adepartment of mechanical engineering, rajalakshmi engineering college, chennai. These fluids are engineered colloidal suspensions of nanoparticles in a base fluid. There are mainly two techniques used to produce nanofluids. Utilizing nanofluid as a potential heat transfer fluid with superior thermophysical.
Engineering nanofluids for heat transfer applications iv other work not included in this thesis. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Characterization of nanofluidsa brief overview tvr sekhar department of mechanical engineering amity university abstractnanofluids are emerging heat transfer fluids presently subject of active research by energy technologists across the world. Thermal conductivity of a liquid is an important physical property that decides its heat transfer performance. Development and demonstration of nanofluids for industrial cooling applications high thermal conductivity nanofluids offer productivity gains and energy consumption reductions heat transfer fluids are a ubiquitous component of many industrial applications. The thermal conductivities of cuo nanofluids were also investigated. Uddin and others published fundamentals of nanofluids. The nanoparticles used in nanofluids are typically metals, metal oxides, carbides, or carbon nanotubes. The seminar report gives an overview of history and evolution of nanofluids, synthesis and preparation methods, the rationale behind. Download mechanical engineering seminar report and ppt presentation on nanofluids. Nanofluids, the fluid suspensions of nanomaterials, have shown many interesting properties, and the distinctive features offer unprecedented potential for many applications. Introduction nanofluids consist of a base fluid enriched with nano size particles less that 100 nm. Nanofluids, the fluid suspensions of nanomaterials, have shown many interesting properties. Heating within the fluid volume, transfers heat to a small area of fluid and allowing the peak temperature to be located away from surfaces losing heat to.
Toprak, mamoun muhammed and bjorn palm, cooling performance of nanofluids in a small diameter tube, experimental thermal and fluid science, 20, 49. Nanofluids application for heavy oil recovery onepetro. Numerical simulation of natural convection by using nano fluids. Heat transfer enhancement using nano fluids nanoparticle.
Downscaling or miniaturization has been a recent major trend in modern science and technology. Development and demonstration of nanofluids for indusstrial. Due to these reasons, nanofluids have been a controversial topic. Oct 04, 2017 nanofluids are made up of two basic components. They studied nanofluids and compared its thermal properties with suspensions containing nanoparticles. The present understanding of thermal transport in nanofluids can be grouped into two categories. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Nanofluids have novel properties that make them potentially useful. Solar energy systems sess are considered as one of the most important alternatives to conventional fossil fuels, due to its ability to convert solar energy directly into heat and electricity without any negative environmental impact such as greenhouse gas emissions. Pdf nanofluids are suspensions of nanoparticles in fluids that show significant enhancement of their properties at modest nanoparticle concentrations find. Once the science and engineering of nanofluids are fully understood and their full potential researched, they can be reproduced on a large scale and. The volume concentration of the nanoparticles were varied from 0.
Thermal and hydraulic performance of cuowater nanofluids. Introduction nanofluids are a relatively new class of fluids which consist of a base fluid with nanosized particles 1100 nm suspended within them. The effects of nanofluids on the interfacial tension and emulsion viscosity were also investigated. Nanofluids are potential heat transfer fluids with enhanced thermophysical properties and heat transfer performance can be applied in many devices for better performances i. For example, nanofluids would be useful as coolants in the automobile and electronics industries. However, the available coolants like water and oils have low thermal conductivities, which put many limitations to the development of heat transfer to achieve high performance cooling. Bhagat uk, more pv, khanna pk 2015 study of zinc oxide nanofluids for heat transfer application. However, it is not very practical when efficiencies of two fluids are compared in the same system geometry i. Nanofluids latest seminar topics for engineering csit.
This paper summarizes the recent progress on the study of nanofluids, such as the preparation methods, the evaluation methods for the stability of nanofluids, and the ways to enhance the stability for nanofluids, the. Preparation and thermal conductivity of cuo nanofluid via. Among all the nanoparticles used in the nanofluid, metal oxides, carbides or carbon nanotubes are most common 7. Application of computational fluid dynamics cfd for. Cfd and experimental investigation on the heat transfer characteristics of alumina nanofluids under the laminar flow regime 471 brazilian journal of chemical engineering vol. Introduction with the recent improvements in nanotechnology, the production of particles with sizes on the order of nanometers nanoparticles can be achieved with relative ease. In this article, a wet chemical method was developed to prepare stable cuo nanofluids. Nanofluids are a relatively new class of fluids which consist of a base fluid with nanosized particles 1100 nm suspended within them. A study on the heat transfer of nanofluids in pipes koh kai liang peter dept. Synthesis of nanofluids, applications of nanofluids, thermal conductivity, challenges of nanofluids. A study on the heat transfer of nanofluids in pipes. Wseas international conference on heat transfer, thermal.
The need for development of new classes of fluids which enhance the heat transfer capabilities attracted the. However both methods require advanced and sophisticated equipments. Nanofluids, nano particles, heat transfer enhancement, applications of nanofluid. Engineering nanofluids for heat transfer applications.
It has long been established that a suspension of nanosized solid particles in liquids provide useful advantages in industrial heat transfer fluid systems. The nanoparticles used in nanofluids are typically made of metals, oxides, carbides, or carbon nanotubes. Surfactant is also used in some cases to increase colloidal stability. Conventional heat transfer fluids have inherently poor thermal conductivity. Since diluted suspensions of nanoparticles were first called nanofluids and presented as viable solutions for heat transfer applications, this subject has received much attention and related investigations have expanded to many paths. Technical seminar presentation technical seminar on nanofluids darshan 2. Investigating the use of nanofluids to improve high heat flux arxiv. The studies devoted to evaluation of the heat transfer performance of nanofluids are scarce and inconclusive compared to the studies on the thermophysical properties of various nanofluids indicating a significant gap between fundamental research and practical applications of nanofluids for thermal management. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Engineers now fabricate microscale devices such as microchannel heat exchangers, and micropumps that are the size of dust specks. Numerous investigations on nanofluids show a significant enhancement in thermal conductivity over the base fluid in which these nanoparticles are dispersed.
Apr 09, 2014 nanofluids department of mechanical engineering, msrit page of 22 high cost of nanofluids higher production cost of nanofluids is among the reasons that may hinder the application of nanofluids in industry. The thermal conductivity enhancement of nanofluids depends on the particle volume fraction, size, type of base fluid and nanoparticles, ph value of nanofluids. Nanofluids are a new class of fluids engineered by dispersing nanometersize structures particles, fibers, tubes, droplets in base fluids. This newly introduced category of cooling fluids containing ultrafine nanoparticles 1100 nm has displayed fascinating behavior during experiments including increased thermal conductivity and augmented heat transfer coefficient compared to a pure fluid. It is introduced by choi on argonne national laboratory at 1995. Nanofluids are produced by dispersing nanometerscale solid particles into base liquids such as water, ethylene glycol eg, oils, etc.
However, the stability of the suspension is critical in the development and. Nanofluids in electronics cooling applications advanced. Application of computational fluid dynamics cfd for nanofluids. However, the reported high thermal conductivity sometimes cannot be reproduced, and the potential mechanisms leading to the enhancement are still under scrutiny. The very essence of nanofluids research and development is to enhance fluid macroscopic and megascale properties such as thermal conductivity through manipulating microscopic physics structures, properties and activities. Evaluating the heat transfer enhancement due to the use of nanofluids has recently become the center of interest for many researchers. Nanofluids preparation and stability for heat transfer. A study of heat transfer with nanofluids inpressco. Information technology seminar topics huge collection of information technology seminar topics, reports and ppt. Nanofluids employed in experimental research have to be well characterized with respect to particle size, size distribution, shape and clustering so as to render the results most widely applicable. Common base fluids include water, ethylene glycol and oil. Copper oxide cuo nanoparticles are used to enhancing the heat transfer. Ahmednagar, maharastra, india heat transfer enhancement. Synthesis and characterization of nanofluids for cooling applications s.
Heat transfer enhancement using nano fluids free download as powerpoint presentation. Nanofluids are colloidal dispersions of nanoparticles in base fluids, which can be any. Nanofluids are characterized by an enrichment of a base fluid like water, ethylene glycol or oil with nanoparticles in variety of types like metals. In order to comprehend how nanoscalerelated effects could influence the macroscopic transport behavior of nanofluids under single or phasechange. Nano fluids full seminar report, abstract and presentation download. A study of heat transfer with nanofluids sanjyot varade, chinmay patil and s. Wadkar department of mechanical engineering, savitribai phule pune university, pune, india accepted 12 march 2017, available online 16 march 2017, special issue7 march 2017 abstract the seminar report gives an overview of history and evolution of nanofluids. Some postulate that the thermal conductivity of nanofluids is composed of the particles conventional static part and a brownian motion part which produces micromixing. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect.
Heat transfer fluids are a crucial parameter that affects the size and costs of heat exchangers. Further major advances would be obtained if the coolant flowing in the microchannels were to contain nanoscale particles to enhance heat transfer. Evolution, applications and new theory find, read and cite all the research you need on researchgate. It is an ideal and unique reference source for scientists and engineers working in this important and emerging research field of science, engineering and technology. Preparation and thermal conductivity of cuo nanofluid via a. Short communication open access study of zinc oxide. Recent development of nanotechnology brings out a new heat transfer coolant called nanofluids these fluids exhibit larger thermal properties. Nanofluids are engineered colloidal suspensions of nanoparticles in a base fluid. Nanofluids flooding tests were performed on heavy oil sample of 17.
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