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Clathrate hydrate formation from cyclopentane-in-water emulsions / Masahiro Nakajima ; Ryo Ohmura ; Yasuhiko H. Mori in Industrial & engineering chemistry research, Vol. 47 n°22 (Novembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p. 8933–8939 Titre : Clathrate hydrate formation from cyclopentane-in-water emulsions Type de document : texte imprimé Auteurs : Masahiro Nakajima, Auteur ; Ryo Ohmura, Auteur ; Yasuhiko H. Mori, Auteur Année de publication : 2008 Article en page(s) : p. 8933–8939 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Clathrate  Hydrate Résumé : This paper reports the experimental examinations of hydrate-forming cyclopentane-in-water emulsions as potential thermal energy storage media for air-conditioning systems. It was demonstrated that an adequately compounded cyclopentane/water/surfactant mixture formed a stable emulsion with the aid of continuous agitation and, through its cooling to ∼2 °C, turned into a bulky mass of granular hydrate crystals. The behavior of the hydrate formation was investigated by varying the amount and composition of the surfactant (or surfactant mixture) in the sample cyclopentane/water/surfactant mixture from run to run in order to determine the appropriate preparation of the mixture for efficient hydrate formation. Also performed were measurements of the effective heat of dissociation for the granular hydrate products obtained in the above hydrate-forming experiments. The measurements showed that the effective heat of dissociation can be as high as ∼93% of the intrinsic heat of dissociation of cyclopentane hydrate crystals, thereby indicating a sufficient potential of the cyclopentane-in-water emulsions as thermal energy storage media. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800949k [article] Clathrate hydrate formation from cyclopentane-in-water emulsions [texte imprimé] / Masahiro Nakajima, Auteur ; Ryo Ohmura, Auteur ; Yasuhiko H. Mori, Auteur . - 2008 . - p. 8933–8939. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p. 8933–8939 Mots-clés : Clathrate  Hydrate Résumé : This paper reports the experimental examinations of hydrate-forming cyclopentane-in-water emulsions as potential thermal energy storage media for air-conditioning systems. It was demonstrated that an adequately compounded cyclopentane/water/surfactant mixture formed a stable emulsion with the aid of continuous agitation and, through its cooling to ∼2 °C, turned into a bulky mass of granular hydrate crystals. The behavior of the hydrate formation was investigated by varying the amount and composition of the surfactant (or surfactant mixture) in the sample cyclopentane/water/surfactant mixture from run to run in order to determine the appropriate preparation of the mixture for efficient hydrate formation. Also performed were measurements of the effective heat of dissociation for the granular hydrate products obtained in the above hydrate-forming experiments. The measurements showed that the effective heat of dissociation can be as high as ∼93% of the intrinsic heat of dissociation of cyclopentane hydrate crystals, thereby indicating a sufficient potential of the cyclopentane-in-water emulsions as thermal energy storage media. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800949k