Energy-positive with natural ventilation

Buildings can be air-conditioned using entirely natural means, without mechanical ventilation systems. This is the claim made by 78-year-old Benjamin Bronsema, who will be awarded his PhD for his thesis on the subject at ...

A layer of cool, healthy air

Stratum ventilation systems have been touted as a much more energy efficient system for cooling buildings such as school rooms and offices in hotter climes based on the provisions of the recent ANSI/ASHRAE 55-2010. They may ...

Competing to create a more energy-efficient air conditioner

A University of California, Davis, challenge to build more energy efficient air conditioning has spurred a major global manufacturer to build a rooftop air conditioner that is 40 percent more energy-efficient than conventional ...

Roof and attic design proves efficient in summer and winter

(Phys.org)—A new kind of roof-and-attic system field-tested at the Department of Energy's Oak Ridge National Laboratory keeps homes cool in summer and prevents heat loss in winter, a multi-seasonal efficiency uncommon in ...

Scientists identify likely origins of vertebrate air breathing

University of Alaska Fairbanks scientists have identified what they think is the ancestral trait that allowed for the evolution of air breathing in vertebrates. They will present their research at the 42nd annual meeting ...

ORNL roof and attic design proves efficient in summer and winter

(Phys.org)—A new kind of roof-and-attic system field-tested at the Department of Energy's Oak Ridge National Laboratory keeps homes cool in summer and prevents heat loss in winter, a multi-seasonal efficiency uncommon in ...

Security experts warn of risky attacks on tech-loaded cars

(Phys.org) -- Now that tiny computers and electronic communications systems are being designed into cars, hackers can look toward the car, like the PC, as potential roadkill. If cars are to become computers on wheels, a number ...

School energy audits find millions in potential energy savings

A two-year energy audit of Hamilton schools has identified energy conservation measures that could reduce their energy costs by almost $2.4 million annually. The audit was conducted by engineering faculty and students at ...

New Saudi train ready to shuttle hajj pilgrims

The Mashair Railway, also known as Mecca Metro, rolls out on Sunday to serve pilgrims beginning the annual hajj rituals near the Muslim holy city, bringing a new solution to crowding.

page 6 from 7