Title

Enhancing Heat Capacity Of Colloidal Suspension Using Nanoscale Encapsulated Phase-Change Materials For Heat Transfer

Keywords

colloid suspension; encapsulation; heat transfer; phase-change nanoparticles

Abstract

This paper describes a new method to enhance the heat-transfer property of a single-phase liquid by adding encapsulated phase-change nanoparticles (nano-PCMs), which absorb thermal energy during solid-liquid phase changes. Silica-encapsulated indium nanoparticles and polymer-encapsulated paraffin (wax) nanoparticles have been made using colloid method, and suspended into poly-α-olefin (PAO) and water for potential high- and low-temperature applications, respectively. The shells prevent leakage and agglomeration of molten phase-change materials, and enhance the dielectric properties of indium nanoparticles. The heat-transfer coefficients of PAO containing indium nanoparticles (30% by mass) and water containing paraffin nanoparticles (10% by mass) are 1.6 and 1.75 times higher than those of corresponding single-phase fluids. The structural integrity of encapsulation allows repeated use of such nanoparticles for many cycles in high heat generating devices. © 2010 American Chemical Society.

Publication Date

6-23-2010

Publication Title

ACS Applied Materials and Interfaces

Volume

2

Issue

6

Number of Pages

1685-1691

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/am100204b

Socpus ID

77955505441 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77955505441

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