Solution is coming... (some day...):
Wissenschaft: Ventilator auf der Haut: Professor entwickelt Klimajacke - Diverses - FOCUS Online - Nachrichten
"Put on you what, it's hot." This absurd-sounding invitation to default after the request of the researcher Wilhelm Stork soon. The system engineers at the Karlsruhe Institute of Technology (KIT) has invented an air jacket that cools heat and great physical exertion.
For this he uses the fan effect: Channels with circulating air in the jacket provide for faster evaporation of sweat. This lowers the temperature.
The prototype looks like a bulletproof vest. "This is no accident, because the jacket was co-developed by a company in the industry," said Stork. So far, the company is the only partner who sees potential in development. The air jacket could - worn under the shooting jacket - on hot days make sure that police and bodyguards stay cool. When such a vest or jacket comes on the market and what it will cost, can not say.
For the development of the Federal Ministry of Research contributed several hundred thousand euros. "The project was first a wearable, active climate control realized," it says in a review of the ministry. "This allows longer wear or use times will give you around with firefighters and police officers along with a reduced physical stress." Further applications provides the Ministry with People with cardiovascular problems.
Beyond work and health aspects of the research tries to inspire even the lifestyle arena for its innovation. He refers to a Japanese man who in 2011 brought a shirt with two built-in fans in the back on the market. "The swells then always something on." His knowledge of it have been sold around 50 000 pieces - especially remained shut as many air conditioners after the nuclear accident at Fukushima in Japan.
Stork came up with the idea already in the summer of the century 2003. "I wanted to clean up my office one day in August, but it was just too hot." An air conditioner was not there. "Besides, I did not even cool the room but me." After several experiments, among others Eisjacken he came to the conclusion that the most sensible way is to optimize the body's cooling mechanism.
Unlike most animals, humans can sweat and thus regulate his body temperature even in hot weather and great effort. One problem is to get the sweat from the skin. Wind is helpful. "A fan front and one in back would be great. This is of course not to implement, "says the professor.
His solution: air ducts. On the jacket hanging at waist front and rear hand-sized box with fans, as they are used for computers. Tighten the air entering from the shoulder into the sewer system and is then discharged to the box again. Such a draft is created directly on the body, which actually provides cooling. Arms, legs and head, however, remain hot.
In addition, the 200 grams heavy jackets buzzing constantly to himself, as we know that even on computers. "You could certainly improve," said Stork. To the jacket he has also developed a chest belt that measures including breathing, heart rate, and physical activity. With a mini computer in the form of a wristwatch can then be adjusted accordingly cooling.
With a power of two watts, the Air Jacket is significantly lower fuel consumption than an air conditioner with two kilowatts. "This is my contribution to the climate debate," Stork said with a grin. And now he pulls the jacket itself, to clean up his office in the summer? "No, I have determined that my pain is due less to the heat well. I invent rather clean place. "