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Paul Bettany
Senior Designer

VENTILATION & AIR CONDITIONING

Air conditioning and ventilation (HVAC) systems are integrated technical infrastructures designed to control air quality and temperature in any building.
The system combines two core tasks:
    • Air conditioning system: Uses a closed cycle of refrigerant through the compressor, condenser, expansion valve, and evaporator to regulate temperature, humidity, and cool the room.
    • Ventilation system: Utilizes fans, ducts, and vents to actively supply fresh, oxygen-rich air, while simultaneously extracting exhaust fumes, odors, and smoke for rescue operations in case of fire.
This combination creates a healthy, comfortable, and safe living environment.

Ventilation

Ventilation systems are essential infrastructure in buildings, functioning to circulate and exchange air in order to control the quality of the indoor environment within enclosed spaces.
Main Structure
  • Ventilation fans: The core device that creates pressure to move the airflow (centrifugal fans, axial fans).
  • Air ducts & baffles: Galvanized steel or flexible tubing systems shape the direction of airflow.
  • Grille/Diffuser: The starting and ending points for distributing and diffusing air into a room.
  • Filters & Air Valves: Filter out dust and dirt and regulate airflow.

Điều Hòa

Air conditioning (AC) systems are specialized technical infrastructures designed to control temperature, humidity, air quality, and airflow within enclosed spaces.
Main Structure
  • Compressor: The central operating unit that compresses the refrigerant from low pressure to high pressure.
  • The outdoor unit (condenser): Placed outdoors to dissipate heat into the environment.
  • Evaporator: Installed in the room to absorb heat and cool the air.
  • Expansion valve & Auxiliary equipment: Refrigerant pressure reducer and dust filter system, blower fan.
Principles & Functions
The system operates on the principle of supplying fresh, oxygen-rich air into the room while actively extracting exhaust fumes, odors, and moisture. The system not only maintains fresh air and protects human health but also plays a crucial role in smoke extraction and rescue operations during fires.
Operating Principle
The system operates on a closed thermodynamic cycle. The refrigerant absorbs heat from the room at the evaporator, vaporizes, and is then pushed by the compressor to the condenser to dissipate the heat. A fan continuously blows air across the evaporator to distribute cool air, maintaining a comfortable and fresh environment.

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