Heating, ventilation, and air conditioning - Wikipedia
2021-9-2 · Heating, ventilation, and air conditioning (HVAC) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality.HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics and heat transfer.'Refrigeration' is sometimes added to the field's abbreviation, as ...
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