Abstract
Paraffin is used as a latent heat energy storage material because it has relatively high latent heat and various melting points. However, the low thermal conductivity of paraffin leads to more time in latent heat storage and release processes. Therefore, it is necessary to improve the latent heat storage and release processes of paraffin. It is noted that metal fiber materials are mixed with paraffin in order to enhance the effective thermal conductivity of paraffin. The present investigation experimentally deals with the heat storage and heat release process of paraffin with metal fiber materials as a function of the volumetric fiber fraction and heating temperature. As a result, the heat release characteristic of paraffin with metal fiber materials was improved by enhanced effective thermal conductivity. On the other hand, the heat storage process of paraffin with metal fiber materials was influenced by the natural convection flow, and the heat storage process was not improved because of the interaction between the enhanced effective thermal conductivity and suppression of the natural convection flow by the metal fiber materials.
| Original language | English |
|---|---|
| Pages (from-to) | 997-1008 |
| Number of pages | 12 |
| Journal | Journal of Porous Media |
| Volume | 18 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2015 |
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Keywords
- Heat transfer enhancement
- Metal fiber materials
- Natural convection
- Paraffin
- Thermal storage
ASJC Scopus subject areas
- Mechanical Engineering
- Mechanics of Materials
- Materials Science(all)
- Condensed Matter Physics
- Modelling and Simulation
- Biomedical Engineering
Cite this
Influence of volumetric fiber fraction and heating temperature on heat transfer characteristics of latent heat storage paraffin with aluminum fiber materials. / Haruki, Naoto; Horibe, Akihiko; Sano, Yoshihiko; Hachiya, Kohei.
In: Journal of Porous Media, Vol. 18, No. 10, 2015, p. 997-1008.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Influence of volumetric fiber fraction and heating temperature on heat transfer characteristics of latent heat storage paraffin with aluminum fiber materials
AU - Haruki, Naoto
AU - Horibe, Akihiko
AU - Sano, Yoshihiko
AU - Hachiya, Kohei
PY - 2015
Y1 - 2015
N2 - Paraffin is used as a latent heat energy storage material because it has relatively high latent heat and various melting points. However, the low thermal conductivity of paraffin leads to more time in latent heat storage and release processes. Therefore, it is necessary to improve the latent heat storage and release processes of paraffin. It is noted that metal fiber materials are mixed with paraffin in order to enhance the effective thermal conductivity of paraffin. The present investigation experimentally deals with the heat storage and heat release process of paraffin with metal fiber materials as a function of the volumetric fiber fraction and heating temperature. As a result, the heat release characteristic of paraffin with metal fiber materials was improved by enhanced effective thermal conductivity. On the other hand, the heat storage process of paraffin with metal fiber materials was influenced by the natural convection flow, and the heat storage process was not improved because of the interaction between the enhanced effective thermal conductivity and suppression of the natural convection flow by the metal fiber materials.
AB - Paraffin is used as a latent heat energy storage material because it has relatively high latent heat and various melting points. However, the low thermal conductivity of paraffin leads to more time in latent heat storage and release processes. Therefore, it is necessary to improve the latent heat storage and release processes of paraffin. It is noted that metal fiber materials are mixed with paraffin in order to enhance the effective thermal conductivity of paraffin. The present investigation experimentally deals with the heat storage and heat release process of paraffin with metal fiber materials as a function of the volumetric fiber fraction and heating temperature. As a result, the heat release characteristic of paraffin with metal fiber materials was improved by enhanced effective thermal conductivity. On the other hand, the heat storage process of paraffin with metal fiber materials was influenced by the natural convection flow, and the heat storage process was not improved because of the interaction between the enhanced effective thermal conductivity and suppression of the natural convection flow by the metal fiber materials.
KW - Heat transfer enhancement
KW - Metal fiber materials
KW - Natural convection
KW - Paraffin
KW - Thermal storage
UR - http://www.scopus.com/inward/record.url?scp=84958178771&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84958178771&partnerID=8YFLogxK
U2 - 10.1615/JPorMedia.2015012156
DO - 10.1615/JPorMedia.2015012156
M3 - Article
AN - SCOPUS:84958178771
VL - 18
SP - 997
EP - 1008
JO - Journal of Porous Media
JF - Journal of Porous Media
SN - 1091-028X
IS - 10
ER -