naa a22 4500 510766420 CHVBK 20180411083158.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11630-013-0605-2 doi (NATIONALLICENCE)springer-10.1007/s11630-013-0605-2 Experimental study on latent heat storage characteristics of W/O emulsion -Supercooling rate of dispersed water drops by direct contact heat exchange- [Elektronische Daten] [Shin-ichi Morita, Yasutaka Hayamizu, Akihiko Horibe, Naoto Haruki, Hideo Inaba] Recently, much attention has been paid to investigate the latent heat storage system. Using of ice heat storage system brings an equalization of electric power demand, because it will solved the electric -power-demand-concentration on day-time of summer by the air conditioning. The flowable latent heat storage material, Oil/Water type emulsion, microencapsulated latent heat material-water mixture or ice slurry, etc., is enable to transport the latent heat in a pipe. The flowable latent heat storage material can realize the pipe size reduction and system efficiency improvement. Supercooling phenomenon of the dispersed latent heat storage material in continuous phase brings the obstruction of latent heat storage. The latent heat storage rates of dispersed water drops in W/O (Water/Oil) emulsion are investigated experimentally in this study. The water drops in emulsion has the diameter within 3 ∼ 25μm, the averaged water drop diameter is 7.3μm and the standard deviation is 2.9μm. The direct contact heat exchange method is chosen as the phase change rate evaluation of water drops in W/O emulsion. The supercooled temperature and the cooling rate are set as parameters of this study. The evaluation is performed by comparison between the results of this study and the past research. The obtained experimental result is shown that the 35K or more degree from melting point brings 100% latent heat storage rate of W/O emulsion. It was clarified that the supercooling rate of dispersed water particles in emulsion shows the larger value than that of the bulk water. Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg, 2013 Heat Storage nationallicence Latent Heat nationallicence W/O Emulsion nationallicence Direct Contact Heat Exchange nationallicence Morita Shin-ichi Department of Mechanical Engineering, Yonago National College of Technology, Yonago, Japan aut Hayamizu Yasutaka Department of Mechanical Engineering, Yonago National College of Technology, Yonago, Japan aut Horibe Akihiko Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan aut Haruki Naoto Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan aut Inaba Hideo Tsuyama National College of Technology, Tsuyama, Japan aut Journal of Thermal Science SP Science Press 22/2(2013-04-01), 145-151 1003-2169 22:2<145 2013 22 11630 https://doi.org/10.1007/s11630-013-0605-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11630-013-0605-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Morita Shin-ichi Department of Mechanical Engineering, Yonago National College of Technology, Yonago, Japan aut NATIONALLICENCE 700 1- Hayamizu Yasutaka Department of Mechanical Engineering, Yonago National College of Technology, Yonago, Japan aut NATIONALLICENCE 700 1- Horibe Akihiko Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan aut NATIONALLICENCE 700 1- Haruki Naoto Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan aut NATIONALLICENCE 700 1- Inaba Hideo Tsuyama National College of Technology, Tsuyama, Japan aut NATIONALLICENCE 773 0- Journal of Thermal Science SP Science Press 22/2(2013-04-01), 145-151 1003-2169 22:2<145 2013 22 11630 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer