Get Over 2000 Study Notes & quiz related to HVAC (heating, ventilating, and air conditioning; also heating, ventilation, and air conditioning). This application allows you to expand your knowledge, widen your expertise, improve your skills, Broaden your career & academic horizons. Invest in your Success Now, Your investment in knowledge, professionalism & expertise is durable with a High added value, it's a High return investment. 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. Ventilating or ventilation (the V in HVAC) is the process of "exchanging" or replacing air in any space to provide high indoor air quality which involves temperature control, oxygen replenishment, and removal of moisture, odors, smoke, heat, dust, airborne bacteria, and carbon dioxide. Ventilation removes unpleasant smells and excessive moisture, introduces outside air, keeps interior building air circulating, and prevents stagnation of the interior air. Ventilation includes both the exchange of air to the outside as well as circulation of air within the building. It is one of the most important factors for maintaining acceptable indoor air quality in buildings. Methods for ventilating a building may be divided into mechanical/forced and natural types. This App energized your creativity, showcases your talents and strength your self-confidence during the exam & daily work. You will get better understanding, less preparation time & a better score in the exam. The Content & design of this application is developed by students to satisfy the exact exam candidates needs-We keep the application as simple as possible to let the learner focus only on the content-The Flashcards are exam oriented and designed to enhance quick memorization-The application is designed to let you gain time and efficiency-The Flashcards wording enhances easy understanding to ensure higher exam score. This application is downloaded and used by graduate & undergraduate students, teachers, lecturers, professionals, PhD, researchers, reviewers not only in the US but also in Philippines, Canada, India, Australia, Turkey, Russia, UK, GCC, India, Saudi Arabia, Nigeria, and all over the world.