# US 4,397,752 A · Heat storage material

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- Number: US 4,397,752 A
- Document ID: US4397752A
- Status: Granted
- Kind: A
- Application number: 06/295,147
- Filed: 1981-08-21
- Granted: 1983-08-09
- Earliest claimed: 1980-08-21
- Assignees: Mitsubishi Denki Kabushiki Kaisha
- Inventors: Hiroshi Kimura; Junjiro Kai
- Web page: https://patentgrep.com/patent/US4397752A

## CPC

- C09K 5/063: {Materials absorbing or liberating heat during crystallisation; Heat storage materials}
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

## Abstract

A heat storage material comprises CaCl.sub.2 hydrate has a water content at a molar ratio of more than 6.0 and less than 6.14 based on CaCl.sub.2

## Claims

### Claim 1

A heat storage material which comprises CaCl.sub.2 hydrate having a water content at a molar ratio of more than 6.04 and less than 6.14 based on CaCl.sub.2.

### Claim 2 (depends on 1)

The heat storage material according to claim 1 which further comprises at least one component selected from the group consisting of CaBr.sub.2.6H.sub.2 O, MgCl.sub.2.6H.sub.2 O and MgBr.sub.2.6H.sub.2 O.

### Claim 3 (depends on 2)

The heat storage material according to claim 2 which comprises 85 mol % of said CaCl.sub.2 hydrate and 15 mol % of MgCl.sub.2.6H.sub.2 O.

### Claim 4 (depends on 2)

The heat storage material according to claim 2 which comprises 80 mol % of said CaCl.sub.2 hydrate and 20 mol % of CaBr.sub.2.6H.sub.2 O.

### Claim 5 (depends on 2)

The heat storage material according to claim 2 which comprises 60 mol % of said CaCl.sub.2 hydrate and 40 mol % of CaBr.sub.2.6H.sub.2 O.

### Claim 6 (depends on 2)

The heat storage material according to claim 2 which comprises 85 mol % of said CaCl.sub.2 hydrate and 15 mol % of MgBr.sub.2.6H.sub.2 O.