Abstract
In thermal storage system, a high thermal conductivity of Phase Change Materials (PCM) is required to complement the crystallization phenomenon of the PCM during the discharging process. In this study, PCM with carbon additives, Multi-walled Carbon nanotube, Graphite and Graphene, are manufactured and the thermal conductivity of the PCM is measured by the transient hot-wire method for thermal storage application. The thermal conductivity of the PCM is enhanced by adding the carbon additives, and the effect of Poly Vinyl Pyrrolidone (PVP) as a dispersion stabilizer on the thermal conductivity is evaluated. It is found that the heat transfer rate enhances up to 3.35 times in the case of Graphite at 5.0 vol%. It is finally concluded that Graphite is the most promising candidate for heat transfer enhancement of stearic acid among three carbon additives even though Graphene gives the highest thermal conductivity enhancement.
| Original language | English |
|---|---|
| Pages (from-to) | 112-120 |
| Number of pages | 9 |
| Journal | International Journal of Refrigeration |
| Volume | 42 |
| DOIs | |
| Publication status | Published - 2014 Jan 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Mechanical Engineering
- Building and Construction
Cite this
Thermal conductivity and heat transfer performance enhancement of phase change materials (PCM) containing carbon additives for heat storage application. / Choi, Da Hee; Lee, Juhyuk; Hong, Hiki; Kang, Yong Tae.
In: International Journal of Refrigeration, Vol. 42, 01.01.2014, p. 112-120.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Thermal conductivity and heat transfer performance enhancement of phase change materials (PCM) containing carbon additives for heat storage application
AU - Choi, Da Hee
AU - Lee, Juhyuk
AU - Hong, Hiki
AU - Kang, Yong Tae
PY - 2014/1/1
Y1 - 2014/1/1
N2 - In thermal storage system, a high thermal conductivity of Phase Change Materials (PCM) is required to complement the crystallization phenomenon of the PCM during the discharging process. In this study, PCM with carbon additives, Multi-walled Carbon nanotube, Graphite and Graphene, are manufactured and the thermal conductivity of the PCM is measured by the transient hot-wire method for thermal storage application. The thermal conductivity of the PCM is enhanced by adding the carbon additives, and the effect of Poly Vinyl Pyrrolidone (PVP) as a dispersion stabilizer on the thermal conductivity is evaluated. It is found that the heat transfer rate enhances up to 3.35 times in the case of Graphite at 5.0 vol%. It is finally concluded that Graphite is the most promising candidate for heat transfer enhancement of stearic acid among three carbon additives even though Graphene gives the highest thermal conductivity enhancement.
AB - In thermal storage system, a high thermal conductivity of Phase Change Materials (PCM) is required to complement the crystallization phenomenon of the PCM during the discharging process. In this study, PCM with carbon additives, Multi-walled Carbon nanotube, Graphite and Graphene, are manufactured and the thermal conductivity of the PCM is measured by the transient hot-wire method for thermal storage application. The thermal conductivity of the PCM is enhanced by adding the carbon additives, and the effect of Poly Vinyl Pyrrolidone (PVP) as a dispersion stabilizer on the thermal conductivity is evaluated. It is found that the heat transfer rate enhances up to 3.35 times in the case of Graphite at 5.0 vol%. It is finally concluded that Graphite is the most promising candidate for heat transfer enhancement of stearic acid among three carbon additives even though Graphene gives the highest thermal conductivity enhancement.
KW - Carbon nanotube
KW - Graphite
KW - Heat transfer rate
KW - Thermal conductivity
KW - Thermal storage
UR - http://www.scopus.com/inward/record.url?scp=84901852039&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84901852039&partnerID=8YFLogxK
U2 - 10.1016/j.ijrefrig.2014.02.004
DO - 10.1016/j.ijrefrig.2014.02.004
M3 - Article
AN - SCOPUS:84901852039
VL - 42
SP - 112
EP - 120
JO - International Journal of Refrigeration
JF - International Journal of Refrigeration
SN - 0140-7007
ER -