Heating, ventilation, and air conditioning (HVAC) is the technology of indoor environmental comfort. The purpose of the technology is to create thermal comfort and satisfactory indoor air quality.
HVAC systems are designed by mechanical engineers utilizing the key principles of fluid mechanics, thermodynamics and heat transfer.
Heating, air conditioning and ventilation is an essential part of residential structures like homes, apartment buildings, even commercial buildings, travel lodging and the like. This technology is even used in vehicles like cars, airplanes, submarines and any other environment that requires temperature and humidity control, as well as fresh air from outdoors.
The process of replacing air within a specific space, or exchanging that air in order to facilitate the introduction of fresh, high quality air. This involves oxygen replenishment, moisture, odor and contaminant removal, which aids in the prevention of interior air stagnation.
There are generally two types of ventilation: Mechanically Forced and Natural.
Natural ventilation works just as it sounds. Air is allowed to travel naturally through mesh or gable style vents, windows, doors and other such openings. Warmer and more humid areas will likely need the help of an air conditioner to remove excess humidity and maintain comfortable thermal levels.
Packaged systems are simply central air conditioning systems. These have an exterior, combined condenser and evaporator, which are commonly used in North American buildings and homes. Packed systems elsewhere are typically used in large indoor spaces like stadiums, cinemas and convention centers.
Alternately, split systems consist of interior and exterior coils, which are preferred and used heavily outside of North America. Split systems in North America are most often seen in residential applications, but are beginning to gain popularity in small commercial applications, as well.
With split systems the evaporator coil is linked to a remote condenser unit that uses refrigerant lines between an indoor and outdoor unit rather than directly ducting air from the exterior unit.
Split systems are often more efficient, and they take up less space, however, package systems can be far quieter, as the fan motor is outside.
So, there it is. A run down of HVAC basics. We hope you learned a little something and are now more knowledgeable regarding your heating and air conditioning system.
If you have questions regarding your HVAC system give us a call or reach out online. One of our comfort consultants will be happy to answer your questions, schedule an appointment, or assist in anyway we can.