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Review on thermal properties of nanofluids: Recent developments
S A Angayarkanni1, John Philip1
1SMARTS, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102 T.N, India.
Advances in Colloid and Interface Science
|September 23, 2015
Summary
Nanofluids, dispersions of nanomaterials in base fluids, show controversial thermal conductivity enhancements. This review covers recent progress in nanofluid heat transfer, focusing on thermal properties, phase change materials, and hybrid nanofluids.
Area of Science:
- Materials Science
- Heat Transfer Engineering
- Nanotechnology
Background:
- Nanofluids, dispersions of nanomaterials in base fluids, have garnered significant interest due to reported anomalous thermal conductivity enhancements.
- The field is marked by controversy, with some studies showing enhancements beyond classical models and others aligning with the Maxwell mixing model.
- Understanding nanofluid properties is crucial for advanced heat transfer and thermal energy storage applications.
Purpose of the Study:
- To review recent advancements in nanofluid research from a heat transfer perspective.
- To highlight the latest developments in thermal properties, phase change materials (PCMs), and hybrid nanofluids.
- To provide a comprehensive overview of nanofluid preparation, stabilization, characterization, and theoretical models for beginners.
Main Methods:
- Experimental and theoretical investigations into proposed mechanisms for thermal conductivity enhancement.
- Studies on the role of Brownian motion, interfacial resistance, nanoparticle morphology, and aggregation.
- Analysis of specific heat capacity and its importance for heat transfer applications.
Main Results:
- Exploration of various techniques for nanofluid preparation and stabilization.
- Detailed discussion of thermal conductivity and heat capacity studies, including influencing factors.
- Investigation of proposed heat transport mechanisms and theoretical models for thermal conductivity.
- Examination of the effects of nanoinclusions on phase change materials (PCMs) for thermal energy storage.
Conclusions:
- Nanofluid research is evolving towards tailoring novel fluids with enhanced thermal conductivities.
- Phase change materials and hybrid nanofluids are emerging as key areas for thermal energy storage solutions.
- This review consolidates current knowledge on nanofluid thermophysical properties and heat transfer applications.
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