HVAC system
HVAC stands for Heating, Ventilating, and Air Conditioning, collectively referred to as air conditioning system. This is an indispensable system in large projects such as factories, buildings, hotels, commercial centers,…
An HVAC system has an important function: To provide the best air quality for people regardless of environmental conditions. Each field of factory or construction needs different air standards, so each building has a different HVAC system.
Structure, principles of HVAC system
The ventilation system includes the following systems:
- Heating system heats the air to a standard temperature and distributes it to the entire area. Heat can be achieved by boilers, furnaces, or heat pumps circulating hot water, steam, or directly heating air in a central location, such as a furnace room in a home or a mechanical room in large buildings. than. Heat is transferred through radiation, conduction or convection.
- The ventilation system (Ventilation) helps to improve the air quality in the enclosed space with fresh air from outside, helping to eliminate odors, reduce pollution, eliminate microorganisms, and create an airy space for people. labor and can be used to control temperature and humidity.
- Air Conditioning is used to reduce temperature, cool the air and control humidity to a standard level. All the air is passed through a heat exchanger, cooled, and then circulated and distributed to the required areas.
HVAC system cycle
The HVAC system consists of three main cycles:
- Supply Air: This cycle helps to supply air into the room. The air here includes cold air and hot air.
- Return Air: bring new air back.
- Exhaust Air: the air that is not clean, not quality will be discharged to the outside.
Functions of the hvac system
- Control the temperature of the building according to the desired temperature. Especially for large projects, or works that require a certain temperature to ensure human and production activities.
- Air humidity control
- Quality assurance of dust particles, microbiology with production environments that need high standards
- Pressure required in space.
