Ventilation and Ducting

Ventilation

Ventilating or ventilation (the "V" in HVAC) is the process of exchanging or replacing air in any space to provide high indoor air quality which involves temperature control, oxygen replenishment, and removal of moisture, odors, smoke, heat, dust, airborne bacteria, carbon dioxide, and other gases. Ventilation removes unpleasant smells and excessive moisture, introduces outside air, keeps interior building air circulating, and prevents stagnation of the interior air. Methods for ventilating a building are divided into mechanical/forced and naural types.

Building ventilation has three basic elements:

ventilation rate — the amount of outdoor air that is provided into the space, and the quality of the outdoor air.
airflow direction — the overall airflow direction in a building, which should be from clean zones to dirty zones; and
air distribution or airflow pattern — the external air should be delivered to each part of the space in an efficient manner and the airborne pollutants generated in each part of the space should also be removed in an efficient manner.

Natural Ventilation

Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems. It refers to the flow of external air to an indoor space as a result of pressure differences arising from natural forces

Exhaust ventilation

Exhaust ventilation systems work by depressurizing your home. The system exhausts air from the house while make-up air infiltrates through leaks in the building shell and through intentional, passive vents. Exhaust ventilation systems are most appropriate for cold climates.

Energy Recovery Systems

Energy recovery systems harvest the output power and provide this as input power to the same or another process. An energy recovery system will close this energy cycle to prevent the input power from being released back to nature and rather be used in other forms of desired work.

Extractor Fans

Extractor fans are usually installed in kitchens and bathrooms and draw moisture laden air out of the room and vent it outdoors. This reduces the level of humidity and removes cooking smells to stop them permeating around your home where they can cause condensation, damp, and mould.

Ductwork

Ductwork refers to the system of ducts (metal or synthetic tubes) used to transport air from heating, ventilation and air-conditioning (HVAC) equipment throughout your home. Properly installed and well-maintained air ducts are a key component of indoor air quality and home comfort.

There are three main types of ducting used within domestic ventilation systems: rigid ducting, semi-rigid ducting and flexible ducting

Kitchen Hobs

For humid and dirty kitchen air extract, Made to specification for any kitchen size, shape and fitting.

Rigid Ducts

Usually, Galvanized steel and aluminum are used in the making of this type of ductwork, but aluminum is preferred because of its lightweight and ease of installation. The best part of having installed a sheet metal duct is that you don’t have to worry about dangerous mold .and other growths as both the materials are non-porous in nature and thus restrict the growth of mold in air ducts

Flexible Duct

Flexible ductwork is made from a material that can twist, bend and shape itself into hard-to-reach areas.

Flexible ducting is often used in HVAC (heating, ventilation, and air conditioning) systems to create a connection between different machinery parts. The flexibility of flex ducting is what attributes so many of the well-loved benefits across engineering, construction, and commercial production.

Fiberglass ductwork

Fiberglass-lined ductwork is commonly used in many commercial heating, ventilation, and air conditioning (HVAC) systems. Fiberglass air duct liner provides:

Sound attenuation by dampening noise from HVAC equipment and sound from adjacent spaces, and
Thermal insulation for air ducts, preventing them from losing that expensive conditioned air

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