HVAC (pronounced either "H-V-A-C" or "aitch-vak") is an acronym Acronyms and initialisms are abbreviations that are formed using the initial components in a phrase or name. These components may be individual letters or parts of words (as in Benelux or Delmarva). There is no universal agreement on the precise definition of the various terms (see nomenclature), nor on written usage (see orthographic styling) that stands for the closely related functions of "Heating A heater is any object that emits heat or causes another body to achieve a higher temperature. In a household or domestic setting, heaters are commonly used to generate heating . Heaters exists for all states of matter, including solids, liquids and gases, Ventilating Ventilation is the intentional movement of air from outside a building to the inside. It is the V in HVAC. With clothes dryers, and combustion equipment such as water heaters, boilers, fireplaces, and wood stoves, their exhausts are often called vents or flues — this should not be confused with ventilation. The vents or flues carry the products, and Air Conditioning Air conditioning is the cooling and dehumidification of indoor air for thermal comfort. In a broader sense, the term can refer to any form of cooling, heating, ventilation, or disinfection that modifies the condition of air. An air conditioner is an appliance, system, or mechanism designed to stabilise the air temperature and humidity within an"- the technology of indoor environmental comfort. HVAC system design is a major subdiscipline of mechanical engineering Mechanical engineering is an engineering discipline that was developed from the application of principles from physics and materials science. According to the American Heritage Dictionary, it is the branch of engineering that encompasses the generation and application of heat and mechanical power and the design, production, and use of machines and, based on the principles of thermodynamics In physics, thermodynamics is the study of energy conversion between heat and mechanical work, and subsequently the macroscopic variables such as temperature, volume and pressure. Its progenitor, based on statistical predictions of the collective motion of particles from their microscopic behavior, is the field of statistical thermodynamics (or, fluid mechanics Fluid mechanics is the study of how fluids move and the forces on them. Fluid mechanics can be divided into fluid statics, the study of fluids at rest, and fluid dynamics, the study of fluids in motion. It is a branch of continuum mechanics, a subject which models matter without using the information that it is made out of atoms. Fluid mechanics,, and heat transfer Heat transfer is the transition of thermal energy from a hotter object to a cooler object . When an object or fluid is at a different temperature than its surroundings or another object, transfer of thermal energy, also known as heat transfer, or heat exchange, occurs in such a way that the body and the surroundings reach thermal equilibrium; this. Refrigeration Refrigeration is the process of removing heat from an enclosed space, or from a substance, and moving it to a place where it is unobjectionable. The primary purpose of refrigeration is lowering the temperature of the enclosed space or substance and then maintaining that lower temperature. The term cooling refers generally to any natural or is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect a fault condition and, by interrupting continuity, to immediately discontinue electrical flow. Unlike a fuse, which operates once and then has to be replaced, a). HVAC is particularly important in the design of medium to large industrial and office buildings such as skyscrapers A skyscraper is a tall, continuously habitable building. There is no official definition or height above which a building may clearly be classified as a skyscraper. Most cities define the term empirically; even a building of 80 meters may be considered a skyscraper if it protrudes above its built environment and changes the overall skyline.[ and in marine environments such as aquariums An aquarium is a vivarium consisting of at least one transparent side in which water-dwelling plants or animals are kept. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, marine mammals, turtles, and aquatic plants. The term combines the Latin root aqua, meaning water, with the suffix -arium, meaning "a place for relating to&, where safe and healthy building Sick building syndrome is a combination of ailments (a syndrome) associated with an individual's place of work (office building) or residence. A 1984 World Health Organization report into the syndrome suggested up to 30% of new and remodeled buildings worldwide may be linked to symptoms of SBS. Most of the sick building syndrome is related to poor conditions are regulated with temperature and humidity, as well as "fresh air" from outdoors.
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