Mechanical Ventilation Systems In Commercial Buildings

A building ventilation system that uses powered fans or blowers to provide fresh air to rooms when the natural forces of air pressure and gravity are not enough to circulate air through a building.

Mechanical ventilation systems in commercial buildings.

Intro to commercial building hvac systems and energy code requirements duration. A mechanical ventilation heat recovery mvhr system is an energy recovery ventilation system that uses an air to air heat exchanger that recovers heat that is usually wasted. As previously discussed reference to natural ventilation article natural ventilation is based providing fresh air to a building through openings such as windows and doors. Conditioned air distributes throughout the building.

The system exhausts old or recirculated air. Mechanical ventilation can be retrofitted to almost every house and a large number of commercial premises to promote fresh air into spaces and then remove any latent heat. Fans pull outside air into building for ventilation ventilation includes both outside air and recirculated air requirements are available for minimum outside air based on occupancy floor area and number of occupants see the international mechanical code imc chapter 4 or ashrae standard 62 1 natural ventilation. Natvent conducted research into the use of natural ventilation in commercial buildings on behalf of the european commission in 1998 and discovered that mechanical ventilation systems are often installed in office buildings where good natural ventilation would have been sufficient to obtain comfortable indoor climate and good air quality.

Where natural ventilation is not permitted by this section or the building code mechanical ventilation systems shall be designed constructed and installed to provide a method of supply air and exhaust air. Mechanical ventilation systems shall include controls manual or automatic that enable the fan system to operate wherever the spaces. These steps enable mechanical ventilation. Typical mechanical ventilation systems for commercial buildings in commercial developments mechanical ventilation is typically driven by air handling units ahu connected to ductwork within the building that supplies air to and extracts air from interior spaces.

It works by supply and extracting airflows in and out of homes and buildings to ensure a better indoor air quality. If problems in building design or maintenance causes one of the steps to fail to perform the building s overall air quality will suffer. Today natural ventilation is making a strong comeback in commercial buildings.