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
George W. Bush Helped Make Texas a Clean-Energy Powerhouse
As governor, Bush signed a bill that set the state on a path to becoming a leader in generating carbon-free electricity.
Why We Still Don’t Have Better Batteries
Startups with novel chemistries tend to falter before they reach full production.
Finally, the U.S. Is About to Get Its First Offshore Wind Power
A small set of turbines off Rhode Island will switch on this October—could it be the start of something big?