HVAC (pronounced either "H-V-A-C" or "H-vak") is an initialism 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) or 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 "heating, 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 refers to 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". HVAC is sometimes referred to as climate control and 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 humidity and temperature must all be closely regulated while maintaining safe and healthy 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 within. In certain regions (e.g., UK) the term "Building Services" is also used, but may also include plumbing and electrical systems. 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 HACR (such as the designation of HACR-rated circuit breakers).
Heating, ventilating,and air conditioning is based on the principles of thermodynamics In physics, thermodynamics is the study of the conversion of energy into work and heat and its relation to macroscopic variables such as temperature and pressure. Its underpinnings, based upon statistical predictions of the collective motion of particles from their microscopic behavior, is the field of statistical thermodynamics, a branch of, 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. Heat, and on inventions and discoveries made by Michael Faraday Michael Faraday, FRS was an English chemist and physicist (or natural philosopher, in the terminology of the time) who contributed to the fields of electromagnetism and electrochemistry, Willis Carrier Willis Haviland Carrier was an engineer and inventor, and is known as the man who invented modern air conditioning, Reuben Trane Reuben Nicholas Trane founded Trane, the heating and air conditioning company, with his father James Trane, James Joule James Prescott Joule FRS was an English physicist and brewer, born in Salford, Lancashire. Joule studied the nature of heat, and discovered its relationship to mechanical work (see energy). This led to the theory of conservation of energy, which led to the development of the first law of thermodynamics. The SI derived unit of energy, the joule, is, William Rankine William John Macquorn Rankine FRS was a Scottish engineer and physicist. He was a founding contributor, with Rudolf Clausius and William Thomson (1st Baron Kelvin), to the science of thermodynamics. Rankine developed a complete theory of the steam engine and indeed of all heat engines. His manuals of engineering science and practice were used for, Sadi Carnot Nicolas Léonard Sadi Carnot was a French physicist and military engineer who, in his 1824 Reflections on the Motive Power of Fire, gave the first successful theoretical account of heat engines, now known as the Carnot cycle, thereby laying the foundations of the second law of thermodynamics. He is often described as the "Father of, and many others. The invention of the components of HVAC systems went hand-in-hand with the industrial revolution, and new methods of modernization, higher efficiency, and system control are constantly introduced by companies and inventors all over the world.
The three functions of heating, ventilating, and air-conditioning are closely interrelated. All seek to provide thermal comfort Human thermal comfort is defined by ASHRAE as the state of mind that expresses satisfaction with the surrounding environment . Maintaining thermal comfort for occupants of buildings or other enclosures is one of the important goals of HVAC design engineers, acceptable indoor air quality Indoor air quality is a term referring to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants, and reasonable installation, operation, and maintenance costs. HVAC systems can provide ventilation 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, reduce air infiltration Infiltration is the unintentional or accidental introduction of outside air into a building, typically through cracks in the building envelope and through use of doors for passage. Infiltration is sometimes called air leakage. The leakage of room air out of a building, intentionally or not, is called exfiltration. Infiltration is caused by wind,, and maintain pressure relationships between spaces. How air is delivered to, and removed from spaces is known as room air distribution Characterizing how air is introduced to, flows through, and is removed from spaces is called room air distribution. HVAC airflow in spaces generally can be classified by two different types: mixing and displacement.[1]
In modern buildings the design, installation, and control systems of these functions are integrated into one or more HVAC systems. For very small buildings, contractors normally "size" and select HVAC systems and equipment. For larger buildings where required by law, "building services" designers and engineers An engineer is an engineering professional with an approved degree in engineering. Engineers are concerned with developing economical and safe solutions to practical problems, by applying mathematics and scientific knowledge while considering technical constraints. The term is derived from the Latin root "ingenium," meaning ", such as mechanical Mechanical Engineering is an engineering discipline that involves the application of principles of physics and chemistry for analysis, design, manufacturing, and maintenance of various systems. Mechanical engineering is one of the oldest and broadest engineering disciplines, architectural Architectural engineering, also known as Building Engineering, is the application of engineering principles and technology to building design and construction. Definitions of an architectural engineer may refer to:, or building services Architectural engineering, also known as Building engineering, is the application of engineering principles and technology to building design and construction. Definitions of an architectural engineer may refer to: engineers analyze, design, and specify the HVAC systems, and specialty mechanical contractors build and commission them. In all buildings, building permits and code-compliance inspections of the installations are the norm.
The HVAC industry is a worldwide enterprise, with career opportunities including operation and maintenance, system design and construction, equipment manufacturing and sales, and in education and research. The HVAC industry had been historically regulated by the manufacturers of HVAC equipment, but Regulating and Standards organizations such as ASHRAE The American Society of Heating, Refrigerating and Air Conditioning Engineers is an international technical society for all individuals and organizations interested in heating, ventilation, air-conditioning, and refrigeration (HVAC&R). The Society, organized into Regions, Chapters, and Student Branches, allows exchange of HVAC&R knowledge, SMACNA The Sheet Metal and Air Conditioning Contractors' National Association is an international association of HVAC contractors. Its headquarters is at 4201 Lafayette Center Drive Chantilly, Virginia 20151-1209, and it has about 2,000 members and 98 chapters in the United States, Canada, Brazil, and Australia, ACCA, Uniform Mechanical Code, International Mechanical Code The International Building Code is a model building code developed by the International Code Council (ICC). It has been adopted throughout most of the United States, and AMCA The Amateur Motorcycle Association is a non-profit making governing body for off road motorcycling sport in the United Kingdom. Based in Cannock, Staffordshire, the organisation has over 200 affiliate clubs, catering for motocross, trials, enduro and historical motocross have been established to support the industry and encourage high standards and achievement.
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Q. I was wondering if you should store a microfiber (similar to suede material) couch in climate control or would it be okay to store it in normal storage?
Asked by Jaime H - Mon Aug 27 14:54:12 2007 - - 1 Answers - 0 Comments
A. The covering material maybe microfiber , but the stuffing materials and other materials under the fabric are any-ones guess. Best to store in a humidity controlled environment or it could get a mildew under the micro fiber, and get a strong musty odor. It also depends on how long you are storing it and the amount of humidity in the storage space.
Answered by lori s - Mon Aug 27 17:15:51 2007
