Special Issue of the 1st International Conference on Nanofluids (ICNf19) (original) (raw)
Related papers
Synthesis, Applications and Challenges of Nanofluids – Review
2013
Nanofluids are stable suspensions of nanoparticles (1-100nm) in base fluids that show many interesting properties, and their distinctive features offer unprecedented potential for many applications. This review summarizes the development of nanofluids through various routes and presents the broad range of current and future applications in various fields including nuclear reactors, transportation, electrical energy, mechanical, magnetic, solar absorption, and biomedical fields. However, few barriers and challenges that have been identified due to size shape and temperature must be discussed carefully before it can be fully implemented in the industrial applications.
this review paper, the current scenario of nanofluids and its potential applications on industrial level have been presented. The paper focuses on preparation methods of nanofluids and its advancements till date. The characteristics and the various thermal properties of nanofluids are discussed in this paper.The practical applications of nanofluids in today's world has also been discussed.
A report on the latest trends in nanofluid research
The term Nanofluids was first coined by Sir Stephen Choi in 1995 at Argonne National Laboratory ,U.S.A .Since the discovery, nanofluid have been explored as heat transfer fluids. Nanofluids increased the thermal conductivity of existing coolants (Water, Ethylene glycol) by a magnitude of hundred times which made them attractive for miniaturization of electronic devices .From 1995 till 2008 nanofluid research was focused on enhancing the thermal conductivity of the base fluid by various parameters like shape of nanoparticle, volume fraction of base fluid and material of base fluid and composition of nanoparticle. A lot of theoretical models have been evolved in an attempt to explain the basic mechanism of heat transfer in a nanofluid .Research has been with respect to viscosity, stability, thermal conductivity and convective heat transfer coefficients of nanofluids. From 2008 nanofluids have been investigated for their electrical properties and reported as electrical conductivity enhancers for base fluid. The latest trend in nanofluid is towards optical properties of nanofluid for direct absorption solar collectors.
Nanofluids – potentials and illusions
Advanced Computational Methods and Experiments in Heat Transfer XII, 2012
This study is motivated by the controversies on nanofluids reflected in recent literature. Eight hypotheses considering the subject's measurement of thermophysical properties, evaluation of heat transfer experiments and numerical modeling are discussed. Two of them are illustrated employing the most recent experimental results by the authors.
Nanofluids; opportunities and challenges.
Nanofluids which are new heat transfer fluids have shown two important behaviors. First, their effective thermal conductivity can be much more than those of the conductivity of conventional heat transfer fluids. Secondly, magneto-rheological nanofluids (MRNF) can control the viscosity when they are in a proper magnetic field. On the other hand, in general, nanofluids have shown more effective viscosity in comparison to the base fluids. The idea is to find the optimum range for each nanofluid to provide the maximum heat transfer performance. Consequently, they can significantly reduce the size and materials in the heat transfer applications. Therefore, investigation into the nanoparticles and nanofluid is important regarding material and energy management as well as environment issues. This study concerns on different issues and lack of research and information in nanofluids area to be involved in different industrial applications.
Factors affecting nanofluids behaviour: A review
International Review of Applied Sciences and Engineering
Nanotechnology applications have occupied a wide range in engineering applications and achieved distinctive performance due to their potential as a working fluid instead of conventional liquids due to their outstanding performance. Sustaining stable performance nanofluids for a longer time retaining their properties without clustering and nanoparticles aggregation in the base fluid represents a significant challenge that can influence nanofluid properties and thermal behaviour. This review highlights some important factors that influence the stability of nanofluids, such as the size, concentration ratio of nanoparticles, and the type of base fluid, in addition discussing the methods used to improve the stability of nanofluids, such as the effect of cluster formation of nanoparticles in the base fluid due to Brownian motion and the role of the surfactants in preventing or reducing the agglomeration of nanoparticles, zeta potential and pH in estimating nanofluids stability. The factor...
Nanomaterials
Nowadays, numerous studies on nanomaterials (NMs) and Nanofluids (NFs) are account a plethora of applications. With the scientific society’s common goal of fulfilling the target of sustainable development proposed by the UN by 2030, it is necessary to combine efforts based on the scientific and technological knowledge already acquired, to apply these new systems with safety. There are thousands of publications that examine the use of NFs, their benefits and drawbacks, properties, behaviors, etc., but very little is known about the safety of some of these systems at a laboratory and industrial scale. What is the correct form of manipulating, storing, or even destroying them? What is their life cycle, and are they likely to be reused? Depending on the nanoparticles, the characteristics of the base fluid (water, propylene glycol, or even an ionic liquid) and the addition or not of additives/surfactants, the safety issue becomes complex. In this study, general data regarding the safety ...
Small Particles, Big Impacts: A Review of The Diverse Applications of Nanofluids
2013
Nanofluids—a simple product of the emerging world of nanotechnology—are suspensions of nanoparticles (nominally 1–100 nm in size) in conventional base fluids such as water, oils, or glycols. Nanofluids have seen enormous growth in popularity since they were proposed by Choi in 1995. In the year 2011 alone, there were nearly 700 research articles where the term nanofluid was used in the title, showing rapid growth from 2006 (175) and 2001 (10). The first decade of nanofluid research was primarily focused on measuring and modeling fundamental thermophysical properties of nanofluids (thermal conductivity, density, viscosity, heat transfer coefficient). Recent research, however, explores the performance of nanofluids in a wide variety of other applications. Analyzing the available body of research to date, this article presents recent trends and future possibilities for nanofluids research and suggests which applications will see the most significant improvement from employing nanofluids.