Effect of ultrasonic irradiation on nucleation phenomena in a Na2HPO4 · 12H2O melt being used as a heat storage material

Etsuko Miyasaka; Masakazu Takai; Hideto Hidaka; Yoshihide Kakimoto; Izumi Hirasawa

doi:10.1016/j.ultsonch.2005.05.006

Effect of ultrasonic irradiation on nucleation phenomena in a Na₂HPO₄ · 12H₂O melt being used as a heat storage material

Etsuko Miyasaka^*, Masakazu Takai, Hideto Hidaka, Yoshihide Kakimoto, Izumi Hirasawa

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

The effect of ultrasound on nucleation phenomena in the heat storage material Na₂HPO₄ · 12H₂O was investigated by determining the primary nucleation probability and induction time, and by looking at heat generation phenomena in the initial stage of nucleation. The experimental results show that the primary nucleation probability dramatically increased, and the induction time decreased under the ultrasound irradiation, and in addition, the rate of temperature rise was dependent upon the ultrasonic output. Based on these results and the theoretical relationship between the number of primary nuclei and the heat generation rate, it is proposed that the number of primary nuclei depends upon the ultrasonic output.

Original language	English
Pages (from-to)	308-312
Number of pages	5
Journal	Ultrasonics Sonochemistry
Volume	13
Issue number	4
DOIs	https://doi.org/10.1016/j.ultsonch.2005.05.006
Publication status	Published - 2006 May

Keywords

Crystallization
Heat generation rate
Heat storage material
Primary nucleation
Ultrasound

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)
Environmental Chemistry
Radiology Nuclear Medicine and imaging
Acoustics and Ultrasonics
Organic Chemistry
Inorganic Chemistry

Access to Document

10.1016/j.ultsonch.2005.05.006

Cite this

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title = "Effect of ultrasonic irradiation on nucleation phenomena in a Na2HPO4 · 12H2O melt being used as a heat storage material",

abstract = "The effect of ultrasound on nucleation phenomena in the heat storage material Na2HPO4 · 12H2O was investigated by determining the primary nucleation probability and induction time, and by looking at heat generation phenomena in the initial stage of nucleation. The experimental results show that the primary nucleation probability dramatically increased, and the induction time decreased under the ultrasound irradiation, and in addition, the rate of temperature rise was dependent upon the ultrasonic output. Based on these results and the theoretical relationship between the number of primary nuclei and the heat generation rate, it is proposed that the number of primary nuclei depends upon the ultrasonic output.",

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AU - Miyasaka, Etsuko

AU - Takai, Masakazu

AU - Hidaka, Hideto

AU - Kakimoto, Yoshihide

AU - Hirasawa, Izumi

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AB - The effect of ultrasound on nucleation phenomena in the heat storage material Na2HPO4 · 12H2O was investigated by determining the primary nucleation probability and induction time, and by looking at heat generation phenomena in the initial stage of nucleation. The experimental results show that the primary nucleation probability dramatically increased, and the induction time decreased under the ultrasound irradiation, and in addition, the rate of temperature rise was dependent upon the ultrasonic output. Based on these results and the theoretical relationship between the number of primary nuclei and the heat generation rate, it is proposed that the number of primary nuclei depends upon the ultrasonic output.

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KW - Heat generation rate

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KW - Ultrasound

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