THERMAL STORAGE DEVICE, METHOD USING THERMAL STORAGE DEVICE, AND INTERNAL COMBUSTION ENGINE WARMING SYSTEM INCLUDING THERMAL STORAGE DEVICE

WIPO Patent Application WO/2021/064991

A1

This thermal storage device comprises: a lower thermal storage tank; an upper thermal storage tank disposed above the lower thermal storage tank; an open/close valve having one end coupled to an upper portion of the lower thermal storage tank and another end coupled to a lower portion of the upper thermal storage tank; and a thermal storage material stored in the upper thermal storage tank and the lower thermal storage tank. The thermal storage material is a thermosensitive polymer gel composed of a thermosensitive polymer and a solvent selected from the group consisting of water, an organic solvent, and a mixture thereof. The thermal storage material undergoes a reversible change between hydrophilicity and hydrophobicity at a lower critical solution temperature, wherein, in the course of the change, the solvent in the thermosensitive polymer gel does not vaporize and maintains a liquid state. In a state in which the open/close valve is released, when the thermal storage material reaches or exceeds the lower critical solution temperature, the thermosensitive polymer gel becomes hydrophobic. The thermosensitive polymer gel that has become hydrophobic is stored in the upper thermal storage tank, and the solvent is stored in the lower thermal storage tank.

OHO TAKUMI (JP)
NOBUTOKI HIDEHARU (JP)
TERAI MAMORU (JP)

PCT/JP2019/039329

April 08, 2021

October 04, 2019

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MITSUBISHI ELECTRIC CORP (JP)

C09K5/14; F28D20/00

WO2019159514A1

2019-08-22

JP6501990B1	2019-04-17
JP2007044673A	2007-02-22
JP2006232940A	2006-09-07
JP2017222742A	2017-12-21
CN101117572A	2008-02-06

KISA PATENT & TRADEMARK FIRM (JP)

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