Wristify: MIT Wristband Could Make Air Conditioning Obsolete  

Posted by Big Gav in

Wired has an article on an interesting substitute for air conditioning - MIT Wristband Could Make AC Obsolete.

Here’s a scary statistic: In 2007, 87 percent of households in the U.S. used air conditioning, compared to just 11 percent of households in Brazil and a mere 2 percent in India. Another one: By 2025, booming nations like those are projected to account for a billion new consumers worldwide, with a corresponding explosion in demand for air conditioning expected to arrive along with them. Keeping indoor spaces at comfortable temperatures requires a huge amount of electricity–especially in sweltering climates like India and Brazil–and in the U.S. alone it accounts for a full 16.5 percent of energy use.

All of that adds up to a big problem. At a point when humans need to take a sober look at our energy use, we’re poised to use a devastating amount of it keeping our homes and offices at the right temperatures in years to come. A team of students at MIT, however, is busy working on a prototype device that could eliminate much of that demand, and they’re doing it by asking one compelling question: Why not just heat and cool our bodies instead?

Wristify, as they call their device, is a thermoelectric bracelet that regulates the temperature of the person wearing it by subjecting their skin to alternating pulses of hot or cold, depending on what’s needed.

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