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Current issue

ELEKTRO 1/2018 was released on January 16th 2018. Its digital version will be available on February 12th 2018.

Topic: Electrotechnology; Materials for electrical engineering; Wiring material

Main Article
A new electrical insulating fluid and its possible deployment in practice

SVĚTLO (Light) 6/2017 was released on December 11th 2017. Its digital version will be available on january 11th 2018.

Lighting installations
The lighting of university building Centrale Supélec in Saclay in France
The light for our future

Daylight
Application and judgment light guides Solatube®

A new way to store thermal energy

20.11.2017 | MIT | news.mit.edu

MIT researchers create material for a chemical heat “battery” that could release its energy on demand.

In large parts of the developing world, people have abundant heat from the sun during the day, but most cooking takes place later in the evening when the sun is down, using fuel — such as wood, brush or dung — that is collected with significant time and effort.

New ways to store heat energy

Now, a new chemical composite developed by researchers at MIT could provide an alternative. It could be used to store heat from the sun or any other source during the day in a kind of thermal battery, and it could release the heat when needed, for example for cooking or heating after dark.

The new system uses molecular switches that change shape in response to light; when integrated into the phase change material (PCM), the phase-change temperature of the hybrid material can be adjusted with light, allowing the thermal energy of the phase change to be maintained even well below the melting point of the original material.

Read more at MIT

Image Credit: Melanie Gonick/MIT

-jk-