Heat transfer enhancement with nanofluids by Vincenzo Bianco, Oronzio Manca, Sergio Nardini, Kambiz Vafai

By Vincenzo Bianco, Oronzio Manca, Sergio Nardini, Kambiz Vafai

 

Nanofluids are gaining the eye of scientists and researchers worldwide. This new classification of warmth move medium improves the thermal conductivity of fluid through postponing small stable debris inside it and provides the opportunity of elevated warmth move in numerous functions. Bringing jointly professional contributions from around the globe, warmth move Enhancement with Nanofluids provides a whole realizing of the applying of nanofluids in a number of fields and explains the most concepts utilized in the research of nanofuids move and warmth move.

Providing a rigorous framework to assist readers improve units utilising nanofluids, the ebook addresses simple themes that come with the research and measurements of thermophysical homes, convection, and warmth exchanger functionality. It explores the problems of convective instabilities, nanofluids in porous media, and entropy iteration in nanofluids. The publication additionally includes the most recent developments, ideas, methodologies, and examine at the topic.

Presented in sixteen chapters, the textual content:

  • Discusses the potential mechanisms of thermal conduction enhancement
  • Reviews the result of a theoretical research choosing the anomalous enhancement of warmth move in nanofluid flow
  • Assesses various techniques modeling the thermal conductivity enhancement of nanofluids
  • Focuses on experimental methodologies used to figure out the thermophysical homes of nanofluids
  • Analyzes pressured convection warmth move in nanofluids in either laminar and turbulent convection
  • Highlights the program of nanofluids in warmth exchangers and microchannels
  • Discusses the usage of nanofluids in porous media
  • Introduces the boiling of nanofluids
  • Treats pool and circulate boiling via interpreting the influence of nanoparticles on those advanced phenomena
  • Indicates destiny learn instructions to extra improve this sector of information, and more

Intended as a reference for researchers and engineers operating within the box, Heat move Enhancement with Nanofluids presents complicated subject matters that element the strengths, weaknesses, and capability destiny advancements in nanofluids warmth transfer.

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Extra resources for Heat transfer enhancement with nanofluids

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2009) conducted an international nanofluid benchmark exercise, where several experimen­ tal datasets were analyzed by 34 different organizations around the world. They were able to use classical effective medium theory for well­dispersed particles (Puliti, Paolucci, and Sen 2012a) to accurately reproduce experi­ mental data, providing evidence that there is no anomalous enhancement in the thermal conductivity of their limited sets of nanofluids. Sergis and Hardalupas (2011) conducted a detailed statistical analysis of several nanofluid properties presented in the literature.

Properties of nanofluid ◾ 15 thermal conductivity of water was reported by Assael et al. 6% by volume of MWCNTs. They also noted that the thermal conductivity enhancement increased with the length­to­diameter ratio of the nanotubes. These first 10 years of nanofluid research suggested that the thermal conductivity enhancement in nanofluid must be a function of temperature, particle size, and concentration, but not much was said on the interfacial effects of the liquid–solid interaction. An interesting conclusion from Patel’s group (Patel et al.

Ding et al. (2006) showed an interesting linear shear­thinning behavior for water–CNT nano­ fluids at lower shear rates, whereas the base fluid had a nonlinear trend. Hence, there are some discrepancies in the literature on the nature of the rheology of nanofluids: some believe that nanofluids are Newtonian (Das, Putra, and Roetzel 2003; Prasher, Song et al. 2006; Wang, Xu, and Choi 1999; Xuan and Li 2000), whereas the others found non­Newtonian 20 ◾ Samuel Paolucci and Gianluca Puliti shear­thinning behavior (Ding et al.

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