THERMAL SCIENCE

International Scientific Journal

Thammasit Vongsetskul

,

Peeranut Prakulpawong

,

Panmanas Sirisomboon

,

Jonggol Tantirungrotechai

,

Chanasuk Surasit

,

Pramuan Tangboriboonrat

GRAPHENE OXIDE-LOADED SHORTENING AS AN ENVIRONMENTALLY FRIENDLY HEAT TRANSFER FLUID WITH HIGH THERMAL CONDUCTIVITY

ABSTRACT
Graphene oxide-loaded shortening (GOS), an environmentally friendly heat transfer fluid with high thermal conductivity, was successfully prepared by mixing graphene oxide (GO) with a shortening. Scanning electron microscopy revealed that GO particles, prepared by the modified Hummer’s method, dispersed well in the shortening. In addition, the latent heat of GOS decreased while their viscosity and thermal conductivity increased with increasing the amount of loaded GO. The thermal conductivity of the GOS with 4% GO was higher than that of pure shortening of ca. three times, from 0.1751 to 0.6022 W/mK, and increased with increasing temperature. The GOS started to be degraded at ca. 360°C. After being heated and cooled at 100°C for 100 cycles, its viscosity slightly decreased and no chemical degradation was observed. Therefore, the prepared GOS is potentially used as environmentally friendly heat transfer fluid at high temperature.
KEYWORDS
graphene oxide, heat transfer fluid, shortening, thermal conductivity
PAPER SUBMITTED: 2015-03-12
PAPER REVISED: 2015-11-18
PAPER ACCEPTED: 2015-11-18
PUBLISHED ONLINE: 2015-12-19
DOI REFERENCE: https://doi.org/10.2298/TSCI150312199V
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 5, PAGES [2247 - 2254]
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Graphene oxide-loaded shortening as an environmentally friendly heat transfer fluid with high thermal conductivity

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