Heat storage material composition and use thereof

Patent metadata

Field	Value
Publication number	US-10442969-B2
Application number	US-201816137030-A
Country	US
Kind code	B2
Filing date	Sep 20, 2018
Priority date	Mar 23, 2016
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

One or more embodiments of the present invention provide (i) a novel heat storage material composition, (ii) a heat storage material containing the heat storage material composition, and (iii) a transport container including the heat storage material. A heat storage material composition in accordance with one or more embodiments of the present invention may contain sodium sulfate 10-hydrate, sodium bromide, and sodium chloride, and have a melting point and a solidifying point within a range of 0° C. to 10° C.

First claim

What is claimed is:

1. A heat storage material composition, comprising:
sodium sulfate 10-hydrate;
sodium bromide; and
sodium chloride,
wherein the sodium bromide and the sodium chloride are contained in a total amount of 0.5 mol to 2.0 mol, relative to 1.0 mol of the sodium sulfate 10-hydrate, and
wherein the heat storage material composition has a melting point and a solidifying point within a range of 0° C. to 10° C.

2. The heat storage material composition of claim 1 , further comprising:
potassium chloride.

3. The heat storage material composition of claim 2 , wherein the potassium chloride is contained in an amount of less than 0.2 mol, relative to 1.0 mol of the sodium sulfate 10-hydrate.

4. The heat storage material composition of claim 1 , wherein the following relational expression is satisfied:
−3.0≤ T 1 −T 2 ≤0,

wherein T 1 represents a temperature at which the heat storage material composition starts melting, and T 2 represents a temperature at which the heat storage material composition finishes melting.

5. The heat storage material composition of claim 1 , wherein the following relational expression is satisfied:
0≤ T 3 −T 4 ≤8,

wherein T 3 represents a temperature at which the heat storage material composition starts solidifying, and T 4 represents a temperature at which the heat storage material composition finishes solidifying.

6. The heat storage material composition of claim 1 , wherein an ammonium salt is contained in an amount of not more than 1 wt %.

7. The heat storage material composition of claim 1 , having a latent heat quantity of not less than 150 J/g.

8. A heat storage material, comprising:
the heat storage material composition of claim 1 .

9. A transport container, comprising:
the heat storage material of claim 8 .

Assignees

• Kaneka Corp

Inventors

• Ueda Toru

Classifications

• C09K5/063 Primary

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

• C09K5/06

  the change of state being from liquid to solid or vice versa · CPC title