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Associate Professor, Faculty of Science and Engineering, Chuo University *Profile is at the time of the award.
2025Inamori Research GrantsScience & Engineering
All forms of energy eventually convert to heat. Low-temperature waste heat is rarely utilized and is mostly discarded. Despite this, a significant amount of electricity is consumed for heating water and space heating. Our goal is to develop a technology that allows for easy storage and retrieval of this heat. Thank you very much for selecting our proposal.
In this study, we aim to create a multifunctional fluid capable of storing waste heat and releasing it when needed. To this end, we are developing a dispersion of functional microcapsules containing magnetic particles and phase-change materials.
To date, we have fabricated silica-based microcapsules containing gallium, a low-melting-point metal, and magnetic particles, and evaluated their heat storage and release behavior associated with phase change. In particular, we focused on the supercooling problem that occurs when phase-change materials are micronized, and investigated the effects of encapsulation conditions and magnetic particle addition. As a result, we confirmed the possibility that suppressing oxidation of gallium and incorporating magnetic particles can reduce supercooling.
Keiko Ishii, Ryo Sato, (2026) Clustering of Magnetic Microcapsules in Forced Convection: Effects of Temperature International Journal of Thermofluids 101598-101598 (Corresponding Author) https://doi.org/10.1016/j.ijft.2026.101598
Takuma Matsunaga, Keiko Ishii, Study on Thermal Transport Characteristics of Self-Excited Cooling Device with Temperature-Sensitive Magnetic Microcapsule Dispersion, 35th International Symposium on Transport Phenomena
Science & Engineering
