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The Safe&Cool Technology

March 6th, 2006 Medgadget Editors Space Medicine

According to a press release by the European Space Agency, the protective clothing technology used to safeguard the safety of astronauts is now being implemented on the ground to protect firefighters, steel workers, and others.

“The existing protective clothing used while performing physically demanding work in hot conditions can, in many cases, hinder workers’ ability to remain cool,” explains Stefano Carosio from the Italian company D’Appolonia, Project Manager for the Safe&Cool Project.
“Through this project, named Safe&Cool, we are developing a special protective material with a built-in cooling system based on the technology developed for the space suits used by astronauts on the International Space Station to prevent them from overheating when exposed to direct sunlight during space walks…”
… The Safe&Cool system makes use of three special technologies. Firstly a special 3D-textile structure is used in the thermal and moisture management layer to replace the interliner and moisture barrier of classical three-layered protective clothing.

The materials used in the special 3D-textile structure are hydrophobic thermal comfort fibres to avoid a wet feeling when in contact with the body, combined with hydrophilic fibres to create suction channels to transport moisture away from the skin.
The second technology is the cooling apparatus derived from astronauts’ suits. This enables liquid to be circulated through tubing inserted in cavities in the 3D-textile structure, creating ‘blood vessels’ for heat removal. A water-binding polymer is the third technology and this will be added either as a coating or in the form of a powder dispersed inside the fabrics.
The polymer will absorb and bind excess moisture migrating through the semi-permeable membrane to maintain the temperature below a threshold controlled by the cooling apparatus. If there is a sudden temperature increase, arising from a burn flashover for example, and the cooling system cannot remove heat fast enough from the body, the polymer will release the liquid accumulated, reproducing the human natural sweating process through evaporative cooling.

The ESA press release…

Medgadget Editors

Medical technologies transform the world! Join us and see the progress in real time. At Medgadget, we report the latest technology news, interview leaders in the field, and file dispatches from medical events around the world since 2004.

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