“Chemical Thermal Storage” – a technology to store a large amount of heat by using chemical reactions

12.16.2017

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Summary

The Industry-Government-Academic matching forum "the technological development of for saving energy and unutilized energy" was held in INCHEM TOKYO 2017 (at the Tokyo International Exhibition Center “Tokyo Big Sight”).
Mr. Ryu (An associate professor of Chiba University Graduate School) gave a lecture on "the Chemical Thermal Storage” – a technology to store a large amount of heat by using chemical reactions.

Chemical Thermal Storage Medium and Magnesium Hydroxide

Mr. Ryu of Chiba University graduate school is striving to research and develop "chemical thermal storage mediums" which stores and utilizes unutilized energy such as industrial waste heat. The chemical thermal storage technology features the highest thermal storage density among technologies of thermal storage currently undergoing research and development. That technology can respond to a wide range of temperature of heat sources by selecting a reaction system.

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But it is a problem that a temperature of thermal storage reaction doesn't match with temperature of a heat radiation from sources such as industrial waste heat.
Most of heat sources from industrial waste heat accounts for more 600°C of such as steel industries or less 300°C of other industries.
It is required of developing new chemical thermal storage mediums corresponding to these heat source temperatures.
Mr. Ryu has been especially focused on and studied a magnesium hydroxide-based chemical thermal storage medium, which has a high capacity of thermal storage and a stability for transportation and storage, among chemical thermal storage mediums.

Summary of Lecture

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In the lecture, he introduced features of chemical thermal storage and demonstration experiments in recent years.
The chemical thermal storage is a method of thermal storage that uses chemical reaction, as its name suggests. It features a high energy density while it is reversible.

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Among NEDO and other domestic companies, demonstration experiments of them are proceeding, and now is a phase of reporting concrete results of experiments.
Aiming to improve a performance of chemical thermal storage mediums, Mr. Ryu has been developing and evaluating magnesium hydroxide-based composite chemical thermal storage mediums, elucidating a reaction mechanism, and evaluating its durability.
The lecture was a great success.

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This is a photo of Mr. Ryu after the lecture.
We have developed the CHARGEMAG® PM-1 magnesium hydroxide thermal storage medium through a collaborative research with Mr. Ryu.
For details, please see our web page for the product!

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水酸化マグネシウム系蓄熱材 CHARGEMAG®

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Form: Granulated

We have developed the CHARGEMAG® PM-1 magnesium hydroxide thermal storage medium that enables thermal storage at 300 °C.

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CHARGEMAG®

  • Magnesium Hydroxide based Chemical Heat Storage Material
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CHARGEMAG®

  • Magnesium Hydroxide based Chemical Heat Storage Material