Heat storage/dissipation material and heat storage/dissipation system

Patent metadata

Field	Value
Publication number	US-2019048243-A1
Application number	US-201816161502-A
Country	US
Kind code	A1
Filing date	Oct 16, 2018
Priority date	Oct 4, 2013
Publication date	Feb 14, 2019
Grant date	—

Abstract

A heat storage/dissipation material has a constitution in which heat storage/dissipation titanium oxide made of Ti 3 O 5 is dispersed in heat transfer oil in a liquid form, the heat storage/dissipation titanium oxide not undergoing phase transition into a β-phase that has properties of a non-magnetic semiconductor and maintaining a state of a paramagnetic metal as long as the heat storage/dissipation titanium oxide is not subjected to pressure or light for heat dissipation. The heat storage/dissipation material is capable of maintaining a state of storing heat as long as the heat storage/dissipation material is not subjected to the pressure or the light for heat dissipation and is capable of releasing heat when subjected to the pressure or the light for heat dissipation, and therefore is capable of releasing the stored heat at a desired timing.

First claim

1 - 10 . (canceled)

11 . A method for storing/dissipating heat comprising:
using a heat storage/dissipation material containing λ-Ti 3 O 5 as a heat storage/dissipation titanium oxide to cause the λ-Ti 3 O 5 to maintain a state of a paramagnetic metal as long as the λ-Ti 3 O 5 is not subjected to pressure or light for heat dissipation; and applying pressure or light for heat dissipation to the λ-Ti 3 O 5 to cause a phase transition of the λ-Ti 3 O 5 into a β-phase that has properties of a non-magnetic semiconductor, thereby releasing heat stored in the λ-Ti 3 O 5 .

12 . The method according to claim 11 , wherein the heat storage/dissipation titanium oxide is dispersed in a heat transfer member in a liquid form or a solid powder form.

13 . The method according to claim 11 , wherein the heat storage/dissipation titanium oxide stores heat by being heated at 460 [K] or higher.

14 . The method according to claim 11 , wherein the heat storage/dissipation titanium oxide stores heat by being irradiated with light for heat storage having a particular wavelength when the λ-Ti 3 O 5 has undergone the phase transition into the β-phase.

15 . The method according to claim 11 , wherein the λ-Ti 3 O 5 is obtained using anatase type titanium oxide as a starting material and the pressure is 0.4 [GPa] or more.

16 . The method according to claim 11 , wherein the λ-Ti 3 O 5 is obtained using rutile type titanium oxide as a starting material and the pressure is 60 [MPa] or more.

17 . The 1 method according to claim 11 , wherein the light for heat dissipation has a light intensity of 5×10 2 to 30×10 2 [mJ cm −2 pulse −1 ].

18 . The method according to claim 14 , wherein the light for heat storage irradiating the β-phase has a light intensity of 0.5×10 2 to 15×10 2 [mJ cm −2 pulse −1 ].

Assignees

• Univ Tokyo

Inventors

• Ohkoshi Shin-Ichi
• Tokoro Hiroko
• YOSHIKIYO Marie
• Namai Asuka

Classifications

• C09K5/02

  Materials undergoing a change of physical state when used (C09K5/16, C09K5/20 take precedence) · CPC title

• C01G23/04

  Oxides; Hydroxides · CPC title

• C01P2002/76

  by a space-group or by other symmetry indications · CPC title

• C01P2006/32

  Thermal properties · CPC title

• C09K5/063 Primary

  Materials absorbing or liberating heat during crystallisation; Heat storage materials · CPC title