Educational Resource

Heating, Ventilation & Air Conditioning System

Video Transcript

HVAC stands for Heating, Ventilation, and Air Conditioning. HVAC refers to the different systems used for moving air between indoor and outdoor areas, along with heating and cooling in both residential and commercial buildings. They are the systems that keep you warm and cozy in the winter and feel cool and fresh in the summer. They also are the systems that filter and clean indoor air to keep you healthy and maintain humidity levels at optimal comfort levels. So, what are the types of HVAC systems? There are two most popular option for industrial, which is package unit type, which is duct and direct blow.

Another type is called separate unit types and it is only available for duct. Next, what is the main components for a HVAC system? First, the HVAC control panel. Control panels are designed to match the requirements of each application and can vary from small custom-designed microprocessors and wall-mounted control panels to four standing cabinets and multi-cubical control centers, giving the full benefit of isolation, safety, and separation. Next, is the Air Handling Unit . The air handling units being designed as the main air supply source, they can also be designed as a pressurization source. Air handling units for oil and gas applications and hazardous areas normally consist of these types of equipment and units as skid casing motors, cooling coils, weather louvres, humidifiers, control dampers, duct heaters, fans, filters, and ancillary components. Other than that, air-cooled condensing unit.

The compressor unit compresses the refrigerant gas returning from the evaporator coil into the condenser coil where the hot pressurized gas vapor is cooled sufficiently allowing it to return to its liquid state. The liquid refrigerant then passes from the condenser coil and back to the evaporator coil to repeat the cycle. Access for maintenance is via the access panels fitted to the enclosure. Next is ducting. Ducts are passages or conduits that are used in ventilation, heating, and air conditioning to remove and deliver air. The air flows return air, supply air, and exhaust air. Ducts can also deliver ventilation air as part of the air supply. Air ducts are one key method of ensuring acceptable indoor air quality as well as thermal comfort. Ducting can be made from various materials including galvanized steel, aluminum, polyurethane, fiberglass, and fabric ducting.

Moreover, there is damper. Damper is a movable plate located in the ductwork that regulates airflow and redirects it to specific areas of the home. Dampers are typically used in zoning or zone control systems. It divides your station into as many as four zones, giving you more options for controlling your comfort energy usage. By directing air, where it’s needed most a zoning system doesn’t waste energy by overheating or over cooling other areas. In fact, when used with a programmable thermostat, zoning can lead to energy savings of up to 35 percent next is exhaust fans. An exhaust fan is a device used to draw unwanted, contaminated air away from a particular room or area of a building to the outside atmosphere. Other than that, the filter coalesces a coalesce or coalescing filter is a device used to separate fluid mixtures into individuals using the principle of coalescence. Coalescence can be used to separate the components of homogeneous or heterogeneous mixtures and emulsions. Common types include gas coalesce, oil coalesce, fuel coalesce, and condensate coalesce which can be used for water gas, gas oil, and fuel gas separation.