Air conditioners equipped with a new valve will use up to 25 percent less energy. The valve, which regulates the expansion of liquid coolant, adjusts to changes in temperature and pressure more quickly and precisely than conventional valves can. Its secret: microelectromechanical systems, or MEMS–devices carved out of silicon and known for their precision and speed. MEMS are so small that they can typically control only microliters of fluid. But the new valve, through a series of levers and other mechanical devices, can control the larger volumes needed for air conditioners.
Credit: David Arky
Product: Microstaq SEV
Cost: Competitive with existing expansion valves, which sell for $15 to $30
Subscribe to Continue Reading
Uh oh–you've read all five of your free articles for this month.
Insider Online Only
$19.95/yr US PRICE
Planes, Trains, and Automobiles Have Become Top Carbon Polluters
For the first time in decades, more carbon emissions will come from transportation than from coal- and gas-fired power plants.
LED Streetlights Are Getting a Dark Reception
They save on electricity, but LED streetlights come with a bluish tinge may be unwelcome—or even unhealthy.
The Paris Climate Accord Just Passed a Crucial Threshold
The landmark agreement could enter into force before the end of the year.