HVAC is basically climate control of confined space with respect to requirements of persons or goods in it.
HVAC system is not only heating and cooling of air but also concerned with maintaining the indoor air quality (IAQ).
Heating of air is done usually in winter and similarly cooling of air is done in summer season.
HVAC system works on the principles of thermodynamics, fluid mechanics and heat transfer.
All these fields come into play in various components of HVAC. IAQ Indoor air quality is the quality of air inside the building or structures as mostly related to health and safe keeping of its occupants or items/goods placed. IAQ is changed with inclusion or contamination with gases and uncontrolled mass & energy transfer.
HVAC business is also increasing at the same pace as field of application is broadening.
HVAC system is basically an assembly of various types of equipment installed together to provide heating and cooling along with indoor climate control. HVAC systems involve mechanical, electrical and I & C components to provide comfort to the occupants of building/space or to preserve goods, products or items placed in space.
HVAC cooling systems may be integrated with HVAC heating systems or these may be installed separately depending upon HVAC design. HVAC system also serves on industrial scale to keep the machinery running by maintaining the temperature of space/hall/room where machines are installed. HVAC water chillers have become essential for any industry for its various needs.
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