History
In 2011 at the University of Pisa
near the Leaning Tower, Giacomo became interested in the cooling issues of space systems. His third year at University marked the beginning of a journey that took him to CEA Paris Saclay, MIT in Boston, ESA in Bordeaux and Thales Alenia Space in Cannes, ultimately leading him to design the smallest cooling circuit ever conceived.
In a world where temperature is rising
and environmental issues are becoming increasingly more important, Tethys has created a personal cooling system for the well-being and comfort of individuals that can be integrated into the lining of a suit jacket, personal protective equipment, a uniform, a bulletproof vest and more. The system is designed to help those who work in extreme environments finding comfort and accomplish their work tasks.
Tethys' mission refers to cooling
Today it is about a person, tomorrow it is a city and the day after the planet will be concerned.
Tethys rechargeable products can be integrated
into the lining of a jacket to cool the human body in summer and warm it in winter, providing an elegant and comfortable solution. They are composed of a microfluidic water circuit that controls the interface temperature of the user through heat exchangers and thermoelectric modules. A pump ensures fluid movement to the heat exchangers, that cools or heats the human body according to the user’s chosen temperature.
Subsequently, the fluid is pumped to the condensers. The condenser system is a network of active exchangers where thermoelectric modules pump the heat from the fluid to the external plate of the circuit. Here, radial fans blow ambient air to cool the module. The cooled fluid returns to the pump and the circuit starts again.
The user can modify this temperature
via a mobile phone application or a potentiometer. The system then adjusts its cooling or heating power to achieve the desired interface temperature. The body’s interfaces and interface areas are defined using various published articles
(e.g., « The key local segments of human body for personalized heating and cooling, » Journal of Thermal Biology, Lijuan Wang, Yufei Tian, Jungsoo Kim, Haiguo Yin, Volume 81, April 2019, Pages 118 – 127 https://doi.org/10.1016/j.jtherbio.2019.02.013 and « Human local and total heat losses in different temperature, » Physiology & Behavior, Lijuan Wang, Hui Yin, Yuhui Di, Yanfeng Liu, Jiaping Liu, Volume 157, 1 April 2016, Pages 270-276 http://dx.doi.org/10.1016/j.physbeh.2016.02.018, among others).
Advantages
Very small volume
Weight <350 g
Low noise level (no compressor)
Adjustable temperature
Better energy efficiency, rechargeable batteries
The product in question is the subject of a patent
drafted with the Barre Laforgue law firm in Toulouse and filed on December 28, 2022 (INPI deposit number: FR2214598 – title of the invention: (" Système portatif de contrôle thermique du corps humain et haut de vêtement intégrant le système“).