Air conditioning units guzzle energy, and cooling accounts for about a fifth of the total electricity use in buildings John Elk III/Getty Images A cooling system with no moving parts or environmentally damaging refrigerant liquids or gases can work almost twice as efficiently as a standard air-conditioning system, which could slash electricity use. Most air … Read more
Electricity can be generated by using nanoscale fibres that respond to the movement of molecules in fluid Martin Capek/Alamy A miniature generator can convert the movements of molecules in room temperature liquid into electricity. The device could one day be used to power devices like medical implants or even small household appliances. Molecules are constantly … Read more
The Heata unit (left) that attaches to a hot water tank (right) HEATA People in the UK may soon be able to save about £150 a year on their energy bills by using a data server to heat their water. About 45 per cent of energy consumed in data centres is used by cooling systems … Read more