[article]
| Titre : |
Quantitative evaluation of the effects of poly-vinyl alcohol on supercooling phenomena of water |
| Titre original : |
Evaluation quantitative des effets de l'alcool polyvinylique sur les phénomènes de surrefroidissement de l'eau |
| Type de document : |
texte imprimé |
| Auteurs : |
Hiroyuki Kumano, Auteur ; Tetsuo Hirata, Auteur ; Shutaro Takeda, Auteur |
| Année de publication : |
2012 |
| Article en page(s) : |
pp. 1999–2006 |
| Note générale : |
Génie mécanique |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Freezing Nucleation Solutions Polymers Water Supercooling |
| Résumé : |
The effect of poly-vinyl alcohols (PVAs) on the supercooling of water was investigated experimentally for varying sample volumes and degrees of polymerization and saponification. A statistical analysis was carried out on the experimental results and a quantitative evaluation of the inhibition effect of PVA on release of the supercooled state was attempted by introducing a coefficient representing the inhibition effect of PVA. Experimental results and the values calculated from the statistical analysis agreed well and it was found the statistical analysis could be applied to the freezing of supercooled water containing PVA. Moreover, the effects of the PVA on the release of the supercooled state were evaluated quantitatively, using the statistical analysis. The effect of the degree of polymerization is insignificant but it was found that the inhibition effect of PVA increased with increasing degrees of saponification. |
| ISSN : |
0140-7007 |
| En ligne : |
http://www.sciencedirect.com/science/article/pii/S0140700711001617 |
in International journal of refrigeration > Vol. 34 N° 8 (Décembre 2011) . - pp. 1999–2006
[article] Quantitative evaluation of the effects of poly-vinyl alcohol on supercooling phenomena of water = Evaluation quantitative des effets de l'alcool polyvinylique sur les phénomènes de surrefroidissement de l'eau [texte imprimé] / Hiroyuki Kumano, Auteur ; Tetsuo Hirata, Auteur ; Shutaro Takeda, Auteur . - 2012 . - pp. 1999–2006. Génie mécanique Langues : Anglais ( eng) in International journal of refrigeration > Vol. 34 N° 8 (Décembre 2011) . - pp. 1999–2006
| Mots-clés : |
Freezing Nucleation Solutions Polymers Water Supercooling |
| Résumé : |
The effect of poly-vinyl alcohols (PVAs) on the supercooling of water was investigated experimentally for varying sample volumes and degrees of polymerization and saponification. A statistical analysis was carried out on the experimental results and a quantitative evaluation of the inhibition effect of PVA on release of the supercooled state was attempted by introducing a coefficient representing the inhibition effect of PVA. Experimental results and the values calculated from the statistical analysis agreed well and it was found the statistical analysis could be applied to the freezing of supercooled water containing PVA. Moreover, the effects of the PVA on the release of the supercooled state were evaluated quantitatively, using the statistical analysis. The effect of the degree of polymerization is insignificant but it was found that the inhibition effect of PVA increased with increasing degrees of saponification. |
| ISSN : |
0140-7007 |
| En ligne : |
http://www.sciencedirect.com/science/article/pii/S0140700711001617 |
|
Quantitative evaluation of the effects of poly-vinyl alcohol on supercooling phenomena of water in International journal of refrigeration, Vol. 34 N° 8 (Décembre 2011)
