Ventilation airflow

To obtain a reasonable degree of personal comfort in hot weather, there are three basic factors that must be provided ventilation and coolong system of a commercial building or industrial.

Forced ventilation is used to control indoor air quality. Excess moisture odors and contaminants can be controlled via dilution or replacement with outside air. However, in humid climates energy is needed to remove excess ventilation air.

Kitchens and bathrooms typically have mechanical exhaust to control odors and sometimes humidity. Factors in the design of such systems include the flow rate (which is a function of fan speed and exhaust vent size) and noise level. If the ducts for fans of space travel unheated (Eg an attic), the ducts should be isolated to prevent condensation in the ducts. Direct drive fans are available for many applications, and may reduce maintenance needs.

Ceiling fans and table / floor fans circulate air within a room to reduce the temperature perceived due to the evaporation of sweat from the skin of the occupants. Since hot air rises, ceiling fans can be used to maintain a warmer environment in the winter by circulating the warm stratified air from the ceiling to the floor. Ceiling fans do not provide ventilation as defined as the introduction of outside air.

Another ipo ventilation - natural ventilation is ventilation of a building with outside air without using a fan or a mechanical system. Can be achieved with windows or trickle vents open when the spaces are small for ventilation and the architecture permits. In more complex systems warm air in the building be allowed to rise and flow out openings to the outside (stack effect) thus forcing cool outside air to be drawn into the building naturally through openings in the lower areas. These systems use very little energy but care must be taken to ensure the comfort of the occupants. In the warm months or humid In many climates, maintaining thermal comfort through natural ventilation may not be possible only systems as conventional air conditioners are used as backups. air-side economizers perform the same function as natural ventilation, but the use of mechanical systems fans, ducts, dampers and control systems to introduce and distribute the cold air outside where appropriate.

Ventilation is the process of change or replacement of air in any room to control temperature or remove moisture, odors, smoke, heat, dust and bacteria in the air. Ventilation includes both the exchange of air outside and as the circulation of air inside the building. One of the most important factors for maintaining acceptable indoor air quality in buildings. Methods for ventilation of a building can be divided into mechanical / forced and natural. Ventilation is used to eliminate odors and excessive humidity, the introduction of outside air, and to keep the air circulating inside the building to avoid stagnation of indoor air.

Tenderall Fan Co. offer very few building ventilation techniques efficient cooling. In industrial plants where a high density of employees and many manual operations necessary, improving the environment can produce benefits substantial in terms of increased production, fewer errors and a decrease in complaints and absenteeism among employees. In other circumstances, attention of an audience or group of students can be a factor that defines the success or failure of the project.

Additional information can be found at the site Tenderall Fan Company Web http://tenderall.com/hvac/index.html .

Oleg Chetchel
Process Engineer Industrial Equipment
Tenderall Fan Co.
http://tenderall.com/contact/index.html
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About the Author

Oleg Chetchel
Ventilation Equipment Designer
Tenderall Fan Co.

http://tenderall.com

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