Tropical Design Flashcards
The replacement of the volume of air contained within a room with an equivalent volume of fresh air within a given period of time. Often used to specify ventilation standards.
Air-change
The angular elevation of a celestial body above the horizon.
Altitude
A wind motor-driven fan for assisting the natural flow through an attic space.
Attic Ventilator
A screen (usually of louvers) placed on the outside of a building to shield windows from direct sunlight.
Brise-soleil
The tendency of air or gas in a shaft or other vertical space to rise when heated, creating a draft that draws in cooler air or gas from below.
Chimney Effect
The transfer of heat from the warmer to the cooler particles of a medium or of two bodies in direct contact. Occurring without perceptible displacement of the particles themselves.
Conduction
The transfer of heat by the circulatory motion of the heated parts of a liquid or gas owing to a variation in density and the action of gravity.
Convection
An opening (as in a wall) serving as an outlet for air, smoke, or the like.
Vent
The range of dry-bulb temperature, relative humidity, mean radiant temperature and air movement judged to be comfortable by Americans and Canadians. Also called comfort envelope.
Comfort Zone
The circulation of fresh air through open windows, doors, or other openings on opposite sides of a room.
Cross Ventilation
Either of the two times during the year when the sun crosses the plane of the celestial equator and when the length of day and night are everywhere approximately equal. Occurring about Mart 21 (spring) and September 21 (autumn).
Equinox
The angular distance north and south from the equator of a point on the earth’s surface, measured in degrees along the meridian passing through the point.
Latitude
The angular distance east and west on the earth’s surface, measured from the prime meridian at Greenwich, England, to the meridian of a given and expressed either in degrees or a corresponding difference in time.
Longitude
A great circle on the earth’s surface passing through both geophysical poles.
Meridian
The process of ventilating a space by natural movement of air rather than by mechanical means.
Natural Ventilation