
CONTENT
- Introduction to HVAC
- History of HVAC
- Need of HVAC
- Heating
- Ventilation
- Air conditioning process
- Types of installation
- Recent Development in HVAC
- Advantages & Disadvantages
- Applications of HVAC
- Conclusion
HISTORY OF HVAC
- IN 1851 Dr John Gorrie was granted U.S. Patent for refrigeration machine.
- In 1880 refrigeration became available for industrial purpose. Initially two major uses –freezing meat for transport and making ice.
- Early 1990-new initiative to keep building cool for comfort.
- 1902 cooling the New York stock exchange-one of the first comfort cooling system.
NEED OF HVAC SYSTEM
- Improvement of the air quality
- Moisture regulation
- Depression
- Maintenance of the constant temperature throughout the year
- Energy conservation.
HVAC COMPONENTS
- Furnace
- Heat exchanger
- Ducts
- Vents
- Air Conditioning Unit
- Evaporator Coils
- Condensing Unit
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