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A typical whole-house fan, with louvers closed when not operating. A whole house fan is a type of fan, commonly venting into a building's attic, designed to circulate air in an entire house or other building. The fan removes hot air from the building and draws in cooler outdoor air through windows and other openings.
AMCA Publication 501 - Application Manual for Louvers provides general information and comments on factors to be considered when designing or specifying installations requiring louvers. It also serves as a guide to understanding the various types of louvers available and includes items to be considered to ensure their proper use.
If they are located closely together, supply air may mix with stale air, decreasing the efficiency of the HVAC system, and creating air quality problems. System imbalances occur when components of the HVAC system are improperly adjusted or installed and can create pressure differences (too much-circulating air creating a draft or too little ...
An automatic louver or damper that controls the fresh air flow into an air handler and modulates to the most energy efficient setting. outside air temperature A measure of the air temperature outside a building.
However, the hot air must be pushed from the register with enough force (or "throw") so that it will cross the room and reach the window. If there is too little throw, the hot air will stop moving partway across the room, the cold air from the window will not be heated (creating the feeling of a cool draft), and air circulation will suffer. [9]
Modern louvers are often made of aluminum, metal, wood, or glass.They may be opened and closed with a metal lever, pulleys, or through motorized operators. [3]The Australian Standard specifies requirements for the construction of buildings using louver in bushfire-prone areas in order to improve their resistance to bushfire attack from burning embers, radiant heat, flame contact and ...