air-side economizers can provide “free cooling,” which reduces a building’s need for mechanical cooling and usually results in substantially lower utility bills. As a key part of the ventilation ...

Ventilation for Acceptable Indoor Air Quality. Atlanta, GA: ASHRAE. [3] ASHRAE. 2004. Standard 90.1-2004 User's Manual. Atlanta, GA: ASHRAE. [4] ASHRAE Guideline 16-2003. Selecting Outdoor, Return, ...

University of Utah researchers used their Salt Lake City campus as lab to determine how much outdoor particulate pollution ...

But it can be hard to tell whether a building's heating, ventilation, and air conditioning (HVAC) system is working properly to minimize risk. Two HVAC experts offer tips on how to spot low ...

Demand for air ventilation systems has grown dramatically in the luxury home market. In Scarsdale, N.Y., a home's entire air supply can be changed out in under an hour. Photo: Claudio Papapietro ...

But there is one smart and fancy device in every Passivhaus building: a mechanical ventilation system with a heat exchange system to bring in fresh air. These units are usually big and expensive ...

and the system recirculates the air in the bus. Dewsnup said bus ventilation isn’t that different from the systems in an office building or grocery store. But, buses do have a unique advantage.

The system was tested in a 12-hour experiment to show that air molecules did not pass between tables, as particles were slowed down and whisked away by a suction device from “ventilation mouths ...