Ventilation systems

Ventilation systems

Ventilation circulates air within the building, as well as exchanges the inside air with the outside air. Ventilation systems control temperature and humidity levels, and remove airborne bacteria, odor, and dust. The two types of ventilation are natural and mechanical.

mechanical ventilation

A forced ventilation method that circulates the air, removes odors, and controls humidity within the building. It is often used in wet areas such as food preparation rooms and bathrooms to control odor. Ceiling and window fans or portable ventilation devices are used to circulate the air within the space. They cannot be used for air replacement unless a clear indoor/outdoor circulation pattern is established.

natural ventilation

A method that uses operable windows and direct outside air circulation, when the temperature, wind, precipitation, humidity, and pollution levels are acceptable. The amount of natural ventilation depends on the type, shape, placement, and size of the building and its openings. There are two primary natural ventilation methods: cross-ventilation and stack-ventilation. Cross-ventilation depends on wind-driven breezes, whereas stack-ventilation uses air density differences to create air movement across a building.
References in periodicals archive ?
Contract notice: framework agreement for maintenance services (maintenance, repair, expert testing) on protective ventilation systems of the manufacturer seka
The global solar ventilation systems market is foretold to expand on the back of rising focus on smart cities and various elements required for their construction.
Summary: The global solar ventilation systems market is foretold to expand on the back of rising focus on smart cities and various elements required for their construction.
At present, ventilation systems have become a standard configuration of all energy-saving, green buildings in Germany; as the renovation of old houses for energy conservation and the implementation of financial and tax incentive mechanisms continue, ventilation systems have become a standard configuration of all buildings in Germany.
BPI researchers are currently working with the NHS to better understand the dispersion of particles around people in hospitals to improve the design of ventilation systems and ultimately try to prevent the spread of disease.
The car maker will inspect the heating and ventilation systems of Vauxhall Zafira B models after concerns parts of the cars caused fires.
Improving the efficiency of turbomachinery, including jet (turbine) fans used in tunnel ventilation systems, is essential in combating the volatile cost of fuel and reducing emissions of greenhouse gases.
Numerical simulations of the interaction of water spray fire suppression and emergency ventilation systems in vehicular tunnels.
Higher performing ventilation systems may be able to eliminate unnecessary overventilation, thereby providing equal or improved indoor air quality and comfort at lower cost and risk.
The DNFSB said DOE has committed to upgrading the double-shell tank ventilation systems and other installed instrumentation necessary to maintain safety at the tanks.
The project involves a renovation, including new roof, flooring, restoration of brick masonry, window replacement, building envelope and structural upgrades, replacement of heating and ventilation systems, science lab renovations, lighting, electrical and plumbing upgrades and interior renovations.
As a result, new homes often need ventilation systems provided to meet current ventilation standards.