Experimental Study on Latent Heat Storage Characteristics of W/O Emulsion by Ultrasonic Wave Impression
Experimental Study on Latent Heat Storage Characteristics of W/O Emulsion by Ultrasonic Wave Impression作者机构：Department of Mechanical Engineering Yonago National College of Technology Yonago Japan Edit Inc. Fukuoka Japan Graduate School of Natural Science and Technology Okayama University Okayama Japan Shujitsu University Okayama Japan
出 版 物：《Open Journal of Fluid Dynamics》 (流体动力学（英文）)
年 卷 期：2013年第3卷第2期
页 面：48-54页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：Heat Storage Latent Heat W/O Emulsion Direct Contact Heat Exchange Ultrasonic
摘 要：The flowable latent heat storage material like Oil/Water type emulsion, microencapsulated latent heat material-water mixture or ice slurry, etc., is enabled to transport the latent heat in a pipe. Supercooling phenomenon of the dispersed latent heat storage material in continuous phase is obstructed by a latent heat storage. The latent heat storage rates of dispersed waterdrops in W/O (Water/Oil) emulsion are investigated experimentally in this study. The waterdrops in emulsion have the diameter within 3 - 25 μm, the averaged diameter of waterdrops is 7.3 μm and the standard deviation is 2.9 μm. Supercooling release of waterdrops in emulsion is examined by short time impressing of the ultrasonic. The direct contact heat exchange method is chosen as the phase change rate evaluation of waterdrops in W/O emulsion. The supercooled temperature is set as parameters of this study. The previous obtained experimental result, as the condition without impressing ultrasonic wave, showed that the 35 K or more degree from melting point brings 100% latent heat storage rate of W/O emulsion. It is clarified that it is possible to reduce 20 K of supercooling degree by impressing the ultrasonic.
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