This Wearable Patch Will Keep You Cool on Hot Summer Days

US scientists have developed a wearable patch that could give you personalized cooling and heating.

Flexible, stretchable cooling and heating patch (Image: David Baillot/UC San Diego Jacobs School of Engineering)

Is the hot weather becoming unpleasant, making you uncomfortable to walk down the street? Not to worry, U.S. scientists have developed a wearable patch that could give you personalized cooling and heating at home, work or on the go.

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Developed by researchers from the University of California-San Diego, the soft, stretchy patch cools or warms a user’s skin to a comfortable temperature and keeps it there as the ambient temperature changes.

The novel patch is powered by a flexible, stretchable battery pack and can be embedded in clothing and wearing it could help save energy on air conditioning and heating, reports UC-San Diego press release.

“This type of device can improve your personal thermal comfort whether you are commuting on a hot day or feeling too cold in your office,” said Renkun Chen, professor of mechanical and aerospace engineering who led the study.

The device, which is at the proof-of-concept stage, could also save energy.

“If wearing this device can make you feel comfortable within a wider temperature range, you won’t need to turn down the thermostat as much in the summer or crank up the heat as much in the winter,” Chen said in a paper published in the journal Science Advances.

Made of thermo-electric alloys, the device is also comfortable and convenient to wear. It physically cools or heats the skin to a temperature that the wearer chooses.

Prototype of the cooling and heating patch embedded in a mesh armband (Image: David Baillot/UC San Diego Jacobs School of Engineering)

“You could place this on spots that tend to warm up or cool down faster than the rest of the body, such as the back, neck, feet or arms, in order to stay comfortable when it gets too hot or cold,” said study’s first author Sahngki Hong.

The goal is to create smart clothing by combining multiple patches together that can work as a personalized cooling and heating system.

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The researchers are now working to integrate the patches into a prototype cooling and heating vest.

“We’ve solved the fundamental problems, now we’re tackling the big engineering issues — the electronics, hardware and developing a mobile app to control the temperature,” Chen said.

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Sam Draper
May 21, 2019

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