Next Article in Journal
Solvent-Tuned Synthesis of Mesoporous Nickel Cobaltite Nanostructures and Their Catalytic Properties
Next Article in Special Issue
Tribological Capabilities of Graphene and Titanium Dioxide Nano Additives in Solid and Liquid Base Lubricants
Previous Article in Journal
Study of the Relationship between Urban Expansion and PM10 Concentration Using Multi-Temporal Spatial Datasets and the Machine Learning Technique: Case Study for Daegu, South Korea
Previous Article in Special Issue
Terahertz Time-Domain Spectroscopy of Graphene Nanoflakes Embedded in Polymer Matrix
Open AccessArticle

Experimental Investigation of Freezing and Melting Characteristics of Graphene-Based Phase Change Nanocomposite for Cold Thermal Energy Storage Applications

1
Department of Mechanical Engineering, Anna University, College of Engineering Campus, Chennai 600 025, India
2
Department of Mechanical Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, India
3
International Institute for Carbon-Neutral Energy Research, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(6), 1099; https://doi.org/10.3390/app9061099
Received: 15 January 2019 / Revised: 28 February 2019 / Accepted: 28 February 2019 / Published: 15 March 2019
(This article belongs to the Special Issue Graphene Nanoplatelets)
In the present work, the freezing and melting characteristics of water seeded with chemically functionalized graphene nanoplatelets in a vertical cylindrical capsule were experimentally studied. The volume percentage of functionalized graphene nanoplatelets varied from 0.1% to 0.5% with an interval of 0.1%. The stability of the synthesized samples was measured using zeta potential analyzer. The thermal conductivity of the nanocomposite samples was experimentally measured using the transient hot wire method. A ~24% (maximum) increase in the thermal conductivity was observed for the 0.5% volume percentage in the liquid state, while a ~53% enhancement was observed in the solid state. The freezing and melting behavior of water dispersed with graphene nanoplatelets was assessed using a cylindrical stainless steel capsule in a constant temperature bath. The bath temperatures considered for studying the freezing characteristics were −6 °C and −10 °C, while to study the melting characteristics the bath temperature was set as 31 °C and 36 °C. The freezing and melting time decreased for all the test conditions when the volume percentage of GnP increased. The freezing rate was enhanced by ~43% and ~32% for the bath temperatures of −6 °C and −10 °C, respectively, at 0.5 vol % of graphene loading. The melting rate was enhanced by ~42% and ~63% for the bath temperatures of 31 °C and 36 °C, respectively, at 0.5 vol % of graphene loading. View Full-Text
Keywords: nanocomposite; melting; freezing; graphene; thermal conductivity nanocomposite; melting; freezing; graphene; thermal conductivity
Show Figures

Figure 1

MDPI and ACS Style

Sidney, S.; Dhasan, M.L.; C., S.; Harish, S. Experimental Investigation of Freezing and Melting Characteristics of Graphene-Based Phase Change Nanocomposite for Cold Thermal Energy Storage Applications. Appl. Sci. 2019, 9, 1099.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop