Natural ventilation


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Related to Natural ventilation: cross ventilation

natural ventilation

[′nach·rəl ‚vent·əl′ā·shən]
(mining engineering)
The weak and varying ventilation in a mine caused by the difference in air density between shafts.

Natural ventilation

1. A method for reducing energy use and cost and for providing acceptable indoor environmental quality rather than using mechanical ventilation. Natural ventilation systems rely on pressure differences to move fresh air through buildings. Openings between rooms such as transom windows, louvers, grills, or open plans are techniques to complete the airflow circuit through a building. Strategies include placement and operability of windows and doors, thermal chimneys, operable skylights, and exterior landscaped berms to direct airflow on a site.
2. 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. See also: Ventilation systems

natural ventilation

Ventilation by air movement caused by natural forces, rather than by fans.
References in periodicals archive ?
In this paper, a set of burning experiments were conducted originally to investigate the effect of shaft height on natural ventilation in road tunnel fires.
PIV investigation of wind-driven natural ventilation airflow was conducted in a wind tunnel using a glass model.
To promote the use of natural ventilation in practice, building designers must have accurate and straightforward simulation tools available to ensure the acceptable thermal performance of their buildings.
This comprehensive account of the fundamentals for natural ventilation design will be invaluable to undergraduates and postgraduates who wish to gain an understanding of the topic for the purpose of research or design.
The RSF building was designed to incorporate natural ventilation and daylighting, so a relatively narrow 60 ft (18.
Consequently, if our goal is to increase natural ventilation, we can obtain a large ventilation rate by opening the window/door only slightly (up to 30[degrees]).
Direct and diffuse light will be allowed to penetrate, and where possible natural ventilation will help to minimise the overall environmental impact.
To maximize success under LEED, owners, developers and their design teams must address multiple issues such as natural ventilation, polluted outdoor-air locations, air-distribution effectiveness, heat recovery/energy savings, humidity control and acoustic control.
In keeping with sustainable building principles and to maximise daylight and natural ventilation, the building will face south and will be part-glazed.
The Jurors commented that the project stands out because the museum maintains a sense of playfulness while incorporating strong, sustainable technologies, including natural ventilation, which is rare in a museum setting.
Bas-Rhin (67) - sweeping benefits and realization of maintenance vmc / vnr on groups of Opus 67 buildings on the departmentBenefits include periodic sweeping particular, the annual maintenance of mechanical ventilation boxes (Vmc), the quadrennial maintenance of ducts and vents for natural ventilation VMC and rehabilitation (Vnr) for building work humbugMarket mono-awarded purchase orders with no maximum (minimum purchase order NO01)For information, the provision of the purchase order is for NO01 Sweeping: entire portfolio about 5989 housingVmc maintenance / vnr: about 11 Foyers and / or local Opus 67.
Hybrid ventilation systems, consisting of natural and mechanical ventilation, offer potentially significant energy savings through the use of natural ventilation (NV) with suitable outdoor conditions, while maintaining indoor comfort conditions with mechanical ventilation with chillers when natural ventilation cannot be used.