Air conditioning and HVAC Flashcards

空調和HVAC抽認卡

HVAC Flashcards

HVAC practice test is a great way to help you prepare for HVAC exam. We offer studying tools for any subjects, purpose learning materials for everyone from everywhere. Instead of the traditional learning with books, the brain is also challenged via our several learning modes: Study, Slide show, Matching, Memorize, Quiz to make the process for you study more exciting and fun.

HVAC (heating, ventilating, and air conditioning; also heating, ventilation, and air conditioning) 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 HVAC&R or HVACR, (heating,ventilating and air-conditioning & Refrigeration) or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers).

HVAC is important in the design of medium to large industrial and office buildings such as skyscrapers, onboard vessels, and in marine environments such as aquariums, where safe and healthy building conditions are regulated with respect to temperature and humidity, using fresh air from outdoors.

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