Auteur Hiroyuki Kumano
Documents disponibles écrits par cet auteur (11)
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Tatsunori Asaoka, Auteur ; Hiroyuki Kumano, Auteur ; Masashi Okada, Auteur |The calculation method for the effective latent heat of fusion of ice in aqueous solution was proposed, in order to clarify the amount of heat generated by the melting of ice in ice slurry. In this study, the effect of the temperature of the aqu[...]
Article : texte imprimé
Hiroyuki Kumano, Auteur ; Tetsuo Hirata, Auteur ; Yosuke Hagiwara, Auteur |The effect of storage on flow and heat transfer characteristics of ice slurry was investigated experimentally. After ice slurry had been stored in the storage tank, variations in ice particle size were measured using a microscope, and diameter d[...]
Article : texte imprimé
Hiroyuki Kumano, Auteur ; Tetsuo Hirata, Auteur ; Ryouta Shouji, Auteur |Heat transfer characteristics of ice slurry were investigated experimentally. The Reynolds number, diameter of the tubes and ice packing factor (IPF) were varied as experimental parameters. For laminar flow, it was found that the ratio of the Nu[...]
Article : texte imprimé
Hiroyuki Kumano, Auteur ; Tetsuo Hirata, Auteur ; Tomoya Kudoh, Auteur |The flow characteristics of a tetra-n-butyl ammonium bromide hydrate slurry were investigated experimentally. Reynolds number, tube diameter and solid fraction were varied as the experimental parameters. For laminar flow, it was found that the r[...]
Article : texte imprimé
Hiroyuki Kumano, Auteur ; Tetsuo Hirata, Auteur ; Tomoya Kudoh, Auteur |The heat transfer characteristics of a tetra-n-butyl ammonium bromide hydrate slurry were investigated where the Reynolds number, tube diameters and solid fraction were varied as experimental parameters. For laminar flow, it was found that the r[...]
Article : texte imprimé
Hiroyuki Kumano, Auteur ; Tetsuo Hirata, Auteur ; Michito Shirakawa, Auteur |Flow characteristics of ice slurry were experimentally investigated using narrow tubes. Reynolds number, the diameter of the tubes and the ice packing factor (IPF) were varied as the experimental parameters. Theoretical analysis was carried out [...]
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Tatsunori Asaoka, Auteur ; Hiroyuki Kumano, Auteur ; Masashi Okada, Auteur |Fine ice particles that make up an ice slurry have an advantage in heat transfer and melt rapidly because of their large specific surface area. In a dynamic-type ice storage system, an ice particle bed is melted by warm water flowing through it [...]
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Tatsunori Asaoka, Auteur ; Hiroyuki Kumano, Auteur ; Maki Serita, Auteur |Tetra-n-butylammonium bromide (TBAB) hydrate has favorable properties as a thermal storage material. For example, the phase change temperature, which is from 0 to 12 °C, is suitable for use in air conditioning, and the latent heat is relatively [...]
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Hiroyuki Kumano, Auteur ; Tetsuo Hirata, Auteur ; Shutaro Takeda, Auteur |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[...]
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Hiroyuki Kumano, Auteur ; Fumito Tamura, Auteur ; Seigo Sawada, Auteur |The flow and heat transfer characteristics of ice slurry were investigated experimentally. The characteristics in the transition region were examined in detail. The ice slurry was produced from ethanol solution. Ice packing factor (IPF), Reynold[...]
Article : texte imprimé
Hiroyuki Kumano, Auteur ; Tetsuo Hirata, Auteur ; Yasuyuki Izumi, Auteur |Effects of solute included in a sample on the specific enthalpy of ice are investigated experimentally. In the experiments, ice including the solute was made from an aqueous solution, and the specific enthalpy was measured by melting the ice in [...]
