Heat Transfer Applications of TiO2 Nanofluids

Abstract

To achieve acme heat transfer is our main disquiet in many heat transfer applications such as radiators, heat sinks and heat exchangers. Due to furtherance in technology, requirement for efficient systems have increased. Usually cooling medium used in these applications is liquid which carries away heat from system. Liquids have poor thermal conductivity as compared to solids. In order to improve the efficiency of system, cooling medium with high thermal conductivity should be used. Quest to improve thermal conductivity leads to usage of different methods, and one of them is addition of nanoparticles to base liquid. Application of nanofluids (a mixture of nanoparticles and base fluid) showed enhancement in heat transfer rate, which is not possible to achieve by using simple liquids. Different researchers used TiO 2 nanoparticles in different heat transfer applications to observe the effects. Addition of titanium oxide nanoparticles into base fluid showed improvement in the thermal conductivity of fluid. This chapter will give an overview of usage of titanium oxide nanoparticles in numerous heat transfer applications.

On the Morphology of Nanostructured TiO2 for Energy Applications: The Shape of the Ubiquitous Nanomaterial

“…dispersed in a base fluid, generally water, ethylene glycol or oil, where the nanophase has the function of modifying the thermal transport properties of the base fluid. Among all the nanoparticles with suitable thermal properties, including metallic and nonmetallic ones, TiO 2 nanoparticles are most commonly used, due to the stability of their chemical structure, their biocompatibility and their electrical, optical and physical properties [ 188 , 189 , 190 , 191 ].…”

Thermal management of electronics devices with PCMs filled pin-fin heat sinks: A comparison

“…So far, several technologies, active and passive, have been introduced for thermal management (TM) of portable electronic devices [1][2][3][4]. Previously, active TM techniques had limitations of bulky volume, noisy, more power consuming, more maintenance cost and time which eventually leads towards the inefficiency and unreliability of operation of electronic devices [5,6]. In last few years, invention of passive cooling technologies introduced a new direction of TM of electronics using phase change materials (PCMs) and various thermal conductivity enhancers (TCEs) [1, [7][8][9].…”

Heat transfer analysis on Engine oil-based hybrid nanofluid past an exponentially stretching permeable surface with Cu/Al2O3 additives

“…Researches on nanofluids have made it clear that they can be used effectively as heat transfer fluids for various industrial applications. [1][2] Nanofluids have the advantage of having supplementary heat transfer ability since the interaction between the particles and fluids, high dispersion permanence predominated by the Brownian motion, they have adjustable properties such as thermal conductivity which can be varied by varying the particle concentration. 3 To improve the properties, explore new properties, and achieve multiple functionalities, research was shifted toward the development of hybrid nanostructures.…”