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Index HVAC

Heating, ventilation and air conditioning (HVAC) is the technology of indoor and vehicular environmental comfort. [1]

127 relations: Academic degree, Academy, Air changes per hour, Air conditioning, Air Conditioning Contractors of America, Air filter, Air handler, American Conference of Governmental Industrial Hygienists, Architectural engineering, ASHRAE, ASHRAE Handbook, Associate degree, Atlanta, Boiler, Building services engineering, Carbon monoxide, Central heating, Chartered Institution of Building Services Engineers, Chicago River, Chimney, Chlorofluorocarbon, Circuit breaker, Construction, Convection, Damper (flow), Death Valley, Deep water source cooling, Dehumidifier, Delhi, Design, Dew point, Diffuser (thermodynamics), Direct drive mechanism, District cooling, District heating, Edwin Ruud, Electric heating, Electricity, Energy recovery, Energy recovery ventilation, Engineering, Engineering Council, Enthalpy, European seasonal energy efficiency ratio, Fan (machine), Fan coil unit, Fluid mechanics, Forced-air, Forecasting (heating), Formaldehyde, ..., Free cooling, Furnace, Furnace room, Glossary of HVAC terms, Gross domestic product, Heat exchanger, Heat pump, Heat pump and refrigeration cycle, Heat recovery ventilation, Heat sink, Heat transfer, High voltage, Humidity, HVAC, HVAC control system, Hydronics, IAPMO, Indoor air quality, Industrial Revolution, Interlock (engineering), International Building Code, International Organization for Standardization, James Prescott Joule, Kotatsu, Latent heat, Lighting, Mechanical engineering, Mechanical room, Michael Faraday, National Institute for Occupational Safety and Health, Natural ventilation, New York (state), Nichrome, Nicolas Léonard Sadi Carnot, Nikolay Lvov, North American Aerospace Defense Command, NOx, Outdoor wood-fired boiler, Plumbing, Pressurization, Radiant cooling, Radiation, Radiator (heating), Refrigerant, Refrigeration, Relative humidity, Reuben Trane, Reversing valve, Room air distribution, Seasonal thermal energy storage, Second law of thermodynamics, Sensible heat, Service (systems architecture), Sheet Metal and Air Conditioning Contractors' National Association, Sick building syndrome, Skyscraper, Space heater, Stack effect, Thermal comfort, Thermal conduction, Thermal efficiency, Thermal expansion valve, Thermal radiation, Thermal wheel, Thermodynamics, Thermostat, Train, Trickle vent, Trump International Hotel and Tower (Chicago), Uniform Mechanical Code, United States Environmental Protection Agency, Ventilation (architecture), Volatile organic compound, William John Macquorn Rankine, Willis Carrier, Wind tunnel, Zone valve. Expand index (77 more) »

Academic degree

An academic degree is a qualification awarded to students upon successful completion of a course of study in higher education, normally at a college or university.

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An academy (Attic Greek: Ἀκαδήμεια; Koine Greek Ἀκαδημία) is an institution of secondary education, higher learning, research, or honorary membership.

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Air changes per hour

Air changes per hour, or air change rate, abbreviated ACH or ACPH, is a measure of the air volume added to or removed from a space (normally a room or house) divided by the volume of the space.

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Air conditioning

Air conditioning (often referred to as AC, A/C, or air con) is the process of removing heat and moisture from the interior of an occupied space, to improve the comfort of occupants.

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Air Conditioning Contractors of America

The Air Conditioning Contractors of America (ACCA) is the largest HVAC contractor organization in the USA.

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Air filter

A particulate air filter is a device composed of fibrous or porous materials which removes solid particulates such as dust, pollen, mold, and bacteria from the air.

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Air handler

An air handler, or air handling unit (often abbreviated to AHU), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning (HVAC) system.

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American Conference of Governmental Industrial Hygienists

The American Conference of Governmental Industrial Hygienists (ACGIH®) is a professional association of industrial hygienists and practitioners of related professions, with headquarters in Cincinnati, Ohio.

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Architectural engineering

Architectural engineering, also known as building engineering, is the application of engineering principles and technology to building design and construction.

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The American Society of Heating, Refrigerating and Air-Conditioning Engineers (doing business since 2012 as ASHRAE) is a global professional association seeking to advance heating, ventilation, air conditioning and refrigeration (HVAC&R) systems design and construction.

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ASHRAE Handbook

The ASHRAE Handbook is the four-volume flagship publication of the nonprofit technical organization ASHRAE (formerly American Society of Heating, Refrigerating and Air-Conditioning Engineers).

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Associate degree

An associate degree (or associate's degree) is an undergraduate academic degree awarded by colleges and universities upon completion of a course of study intended to usually last two years or more.

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Atlanta is the capital city and most populous municipality of the state of Georgia in the United States.

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A boiler is a closed vessel in which fluid (generally water) is heated.

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Building services engineering

Building services engineering is a professional engineering discipline that strives to achieve a safe and comfortable indoor environment whilst minimizing the environmental impact of a building.

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Carbon monoxide

Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is slightly less dense than air.

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Central heating

A central heating system provides warmth to the whole interior of a building (or portion of a building) from one point to multiple rooms.

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Chartered Institution of Building Services Engineers

The Chartered Institution of Building Services Engineers (CIBSE; pronounced 'sib-see') is an international professional engineering association based in London that represents building services engineers.

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Chicago River

The Chicago River is a system of rivers and canals with a combined length of that runs through the city of Chicago, including its center (the Chicago Loop).

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A chimney is a structure that provides ventilation for hot flue gases or smoke from a boiler, stove, furnace or fireplace to the outside atmosphere.

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Chlorofluorocarbons (CFCs) are fully halogenated paraffin hydrocarbons that contain only carbon (С), chlorine (Cl), and fluorine (F), produced as volatile derivative of methane, ethane, and propane.

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Circuit breaker

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit.

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Construction is the process of constructing a building or infrastructure.

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Convection is the heat transfer due to bulk movement of molecules within fluids such as gases and liquids, including molten rock (rheid).

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Damper (flow)

A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment.

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Death Valley

Death Valley is a desert valley located in Eastern California, in the northern Mojave Desert bordering the Great Basin Desert.

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Deep water source cooling

Deep water source cooling (DWSC) or deep water air cooling is a form of air cooling for process and comfort space cooling which uses a large body of naturally cold water as a heat sink.

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A dehumidifier is generally an electrical appliance which reduces and maintains the level of humidity in the air, usually for health or comfort reasons, or to eliminate musty odor and to prevent the growth of mildew.

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Delhi (Dilli), officially the National Capital Territory of Delhi (NCT), is a city and a union territory of India.

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Design is the creation of a plan or convention for the construction of an object, system or measurable human interaction (as in architectural blueprints, engineering drawings, business processes, circuit diagrams, and sewing patterns).

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Dew point

The dew point is the temperature to which air must be cooled to become saturated with water vapor.

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Diffuser (thermodynamics)

A diffuser is "a device for reducing the velocity and increasing the static pressure of a fluid passing through a system”.

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Direct drive mechanism

A direct drive mechanism is one that takes the power coming from a motor without any reductions (such as a gearbox).

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District cooling

District cooling is the cooling equivalent of district heating.

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District heating

District heating (also known as heat networks or teleheating) is a system for distributing heat generated in a centralized location for residential and commercial heating requirements such as space heating and water heating.

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Edwin Ruud

Edwin Ruud (9 June 1854 – 9 December 1932) was a Norwegian mechanical engineer and inventor who immigrated to the United States where he designed, sold, and popularized the tankless-water heater.

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Electric heating

Electric heating is a process in which electrical energy is converted to heat.

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Electricity is the set of physical phenomena associated with the presence and motion of electric charge.

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Energy recovery

Energy recovery includes any technique or method of minimizing the input of energy to an overall system by the exchange of energy from one sub-system of the overall system with another.

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Energy recovery ventilation

Energy recovery ventilation (ERV) is the energy recovery process of exchanging the energy contained in normally exhausted building or space air and using it to treat (precondition) the incoming outdoor ventilation air in residential and commercial HVAC systems.

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Engineering is the creative application of science, mathematical methods, and empirical evidence to the innovation, design, construction, operation and maintenance of structures, machines, materials, devices, systems, processes, and organizations.

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Engineering Council

The Engineering Council (formerly Engineering Council UK) is Britain's regulatory authority for registration of Chartered and Incorporated engineers and technicians, holding a register of these and providing advice to students, engineers, employers and academic institutions on the standards for registration and procedures for registration.

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Enthalpy is a property of a thermodynamic system.

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European seasonal energy efficiency ratio

In Europe, the seasonal efficiency of refrigeration equipment, chillers and air conditioners is often rated by the European seasonal energy efficiency ratio (ESEER) which is defined by the Eurovent Certification Company.

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Fan (machine)

A mechanical fan is a powered machine used to create flow within a fluid, typically a gas such as air.

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Fan coil unit

A fan coil unit (FCU) is a simple device consisting of a heating and/or cooling heat exchanger or 'coil' and fan.

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Fluid mechanics

Fluid mechanics is a branch of physics concerned with the mechanics of fluids (liquids, gases, and plasmas) and the forces on them.

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A forced-air central heating system is one which uses air as its heat transfer medium.

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Forecasting (heating)

Forecasting is a method of controlling building heating by calculating demand for heating energy that should be supplied to the building in each time unit.

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No description.

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Free cooling

Free cooling is an economical method of using low external air temperatures to assist in chilling water, which can then be used for industrial processes, or air conditioning systems.

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A furnace is a device used for high-temperature heating.

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Furnace room

A furnace room is a room in a building for locating a furnace and auxiliary equipment.

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Glossary of HVAC terms

HVAC (heating, ventilation, and air conditioning) is a major subdiscipline of mechanical engineering.

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Gross domestic product

Gross domestic product (GDP) is a monetary measure of the market value of all final goods and services produced in a period (quarterly or yearly) of time.

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Heat exchanger

A heat exchanger is a device used to transfer heat between two or more fluids.

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Heat pump

A heat pump is a device that transfers heat energy from a source of heat to what is called a "heat sink".

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Heat pump and refrigeration cycle

Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pumps and refrigerators.

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Heat recovery ventilation

Heat recovery ventilation (HRV), also known as mechanical ventilation heat recovery (MVHR), is an energy recovery ventilation system using equipment known as a heat recovery ventilator, heat exchanger, air exchanger, or air-to-air heat exchanger which employs a cross flow or counter-flow heat exchanger (countercurrent heat exchange) between the inbound and outbound air flow.

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Heat sink

A heat sink (also commonly spelled heatsink) is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant, where it is dissipated away from the device, thereby allowing regulation of the device's temperature at optimal levels.

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Heat transfer

Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy (heat) between physical systems.

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High voltage

The term high voltage usually means electrical energy at voltages high enough to inflict harm on living organisms.

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Humidity is the amount of water vapor present in the air.

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Heating, ventilation and air conditioning (HVAC) is the technology of indoor and vehicular environmental comfort.

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HVAC control system

HVAC (Heating, Ventilation and Air Conditioning) equipment needs a control system to regulate the operation of a heating and/or air conditioning system.

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Hydronics is the use of a liquid heat-transfer medium in heating and cooling systems.

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The International Association of Plumbing and Mechanical Officials, or IAPMO, coordinates the development and adaptation of plumbing, mechanical, swimming pool and solar energy codes to meet the specific needs of individual jurisdictions both in the United States and abroad.

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Indoor air quality

Indoor air quality (IAQ) is a term which refers to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants.

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Industrial Revolution

The Industrial Revolution was the transition to new manufacturing processes in the period from about 1760 to sometime between 1820 and 1840.

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Interlock (engineering)

An interlock is a feature that makes the state of two mechanisms or functions mutually dependent.

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International Building Code

The International Building Code (IBC) is a model building code developed by the International Code Council (ICC).

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International Organization for Standardization

The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from various national standards organizations.

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James Prescott Joule

James Prescott Joule (24 December 1818 11 October 1889) was an English physicist, mathematician and brewer, born in Salford, Lancashire.

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A is a low, wooden table frame covered by a futon, or heavy blanket, upon which a table top sits.

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Latent heat

Latent heat is thermal energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process — usually a first-order phase transition.

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Lighting or illumination is the deliberate use of light to achieve a practical or aesthetic effect.

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Mechanical engineering

Mechanical engineering is the discipline that applies engineering, physics, engineering mathematics, and materials science principles to design, analyze, manufacture, and maintain mechanical systems.

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Mechanical room

A mechanical room or a boiler room is a room or space in a building dedicated to the mechanical equipment and its associated electrical equipment, as opposed to rooms intended for human occupancy or storage.

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Michael Faraday

Michael Faraday FRS (22 September 1791 – 25 August 1867) was an English scientist who contributed to the study of electromagnetism and electrochemistry.

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National Institute for Occupational Safety and Health

The National Institute for Occupational Safety and Health (NIOSH) is the United States federal agency responsible for conducting research and making recommendations for the prevention of work-related injury and illness.

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Natural ventilation

Natural ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems.

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New York (state)

New York is a state in the northeastern United States.

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Nichrome (NiCr, nickel-chrome, chrome-nickel, etc.) is any of various alloys of nickel, chromium, and often iron (and possibly other elements).

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Nicolas Léonard Sadi Carnot

Nicolas Léonard Sadi Carnot (1 June 1796 – 24 August 1832) was a French military engineer and physicist, often described as the "father of thermodynamics".

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Nikolay Lvov

Nikolay Aleksandrovich Lvov (May 4, 1753 – December 21, 1803) was a Russian artist of the Age of Enlightenment.

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North American Aerospace Defense Command

North American Aerospace Defense Command (NORAD), known until March 1981 as the North American Air Defense Command, is a combined organization of the United States and Canada that provides aerospace warning, air sovereignty, and protection for Northern America.

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In atmospheric chemistry, is a generic term for the nitrogen oxides that are most relevant for air pollution, namely nitric oxide (NO) and nitrogen dioxide.

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Outdoor wood-fired boiler

The outdoor wood boiler is a variant of the classic wood stove adapted for set-up outdoors while still transferring the heat to interior buildings.

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Plumbing is any system that conveys fluids for a wide range of applications.

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Pressurization (or Pressurisation) is the application of pressure in a given situation or environment.

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Radiant cooling

Radiant cooling is the use of cooled surfaces to remove sensible heat by radiation and convection.

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In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium.

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Radiator (heating)

Radiators and convectors are heat exchangers designed to transfer thermal energy from one medium to another for the purpose of space heating.

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A refrigerant is a substance or mixture, usually a fluid, used in a heat pump and refrigeration cycle.

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Refrigeration is a process of removing heat from a low-temperature reservoir and transferring it to a high-temperature reservoir.

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Relative humidity

Relative humidity (RH) is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature.

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Reuben Trane

Reuben Nicholas Trane (September 13, 1886 – September 5, 1954) was an American Mechanical Engineer.

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Reversing valve

A reversing valve removed from an HVAC heat pump for replacement.A reversing valve a type of valve and is a component in a heat pump, that changes the direction of refrigerant flow.

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Room air distribution

Characterizing how air is introduced to, flows through, and is removed from spaces is called room air distribution.

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Seasonal thermal energy storage

Seasonal thermal energy storage (or STES) is the storage of heat or cold for periods of up to several months.

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Second law of thermodynamics

The second law of thermodynamics states that the total entropy of an isolated system can never decrease over time.

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Sensible heat

Sensible heat is heat exchanged by a body or thermodynamic system in which the exchange of heat changes the temperature of the body or system, and some macroscopic variables of the body or system, but leaves unchanged certain other macroscopic variables of the body or system, such as volume or pressure.

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Service (systems architecture)

In the contexts of software architecture, service-orientation and service-oriented architecture, the term service refers to a software functionality or a set of software functionalities (such as the retrieval of specified information or the execution of a set of operations) with a purpose that different clients can reuse for different purposes, together with the policies that should control its usage (based on the identity of the client requesting the service, for example).

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Sheet Metal and Air Conditioning Contractors' National Association

The Sheet Metal and Air Conditioning Contractors' National Association (SMACNA; pronounced 'Smack'-'Nah') is an international trade association with more than 4,500 contributing contractor members in 103 chapters throughout the United States, Canada, Australia and Brazil.

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Sick building syndrome

Sick building syndrome (SBS) is a medical condition where people in a building suffer from symptoms of illness or feel unwell for no apparent reason.

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A skyscraper is a continuously habitable high-rise building that has over 40 floors and is taller than approximately.

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Space heater

A space heater is a device used to heat a single, small area.

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Stack effect

Stack effect or chimney effect is the movement of air into and out of buildings, chimneys, flue-gas stacks, or other containers, resulting from air buoyancy.

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Thermal comfort

Thermal comfort is the condition of mind that expresses satisfaction with the thermal environment and is assessed by subjective evaluation (ANSI/ASHRAE Standard 55).

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Thermal conduction

Thermal conduction is the transfer of heat (internal energy) by microscopic collisions of particles and movement of electrons within a body.

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Thermal efficiency

In thermodynamics, the thermal efficiency (\eta_ \) is a dimensionless performance measure of a device that uses thermal energy, such as an internal combustion engine, a steam turbine or a steam engine, a boiler, furnace, or a refrigerator for example.

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Thermal expansion valve

A thermal expansion valve (often abbreviated as TEV, TXV, or TX valve) is a component in refrigeration and air conditioning systems that controls the amount of refrigerant released into the evaporator thereby controlling superheat.

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Thermal radiation

Thermal radiation is electromagnetic radiation generated by the thermal motion of charged particles in matter.

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Thermal wheel

A thermal wheel, also known as a rotary heat exchanger, or rotary air-to-air enthalpy wheel, or heat recovery wheel, is a type of energy recovery heat exchanger positioned within the supply and exhaust air streams of an air-handling system or in the exhaust gases of an industrial process, in order to recover the heat energy.

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Thermodynamics is the branch of physics concerned with heat and temperature and their relation to energy and work.

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A thermostat is a component which senses the temperature of a physical system and performs actions so that the system's temperature is maintained near a desired setpoint.

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A train is a form of transport consisting of a series of connected vehicles that generally runs along a rail track to transport cargo or passengers.

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Trickle vent

A trickle vent is a very small opening in a window or other building envelope component to allow small amounts of ventilation in spaces intended to be naturally ventilated when major elements of the design - windows, doors, etc., are otherwise closed.

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Trump International Hotel and Tower (Chicago)

The Trump International Hotel and Tower, is a skyscraper condo-hotel in downtown Chicago, Illinois.

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Uniform Mechanical Code

Designated as an American National Standard, the Uniform Mechanical Code (UMC) is a model code developed by the International Association of Plumbing and Mechanical Officials (IAPMO) to govern the installation, inspection and maintenance of HVAC (Heating, Ventilating and Air-conditioning) and refrigeration systems.

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United States Environmental Protection Agency

The Environmental Protection Agency is an independent agency of the United States federal government for environmental protection.

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Ventilation (architecture)

Ventilation is the intentional introduction of ambient air into a space and is mainly used to control indoor air quality by diluting and displacing indoor pollutants; it can also be used for purposes of thermal comfort or dehumidification.

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Volatile organic compound

Volatile organic compounds (VOCs) are organic chemicals that have a high vapor pressure at ordinary room temperature.

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William John Macquorn Rankine

Prof William John Macquorn Rankine LLD (5 July 1820 – 24 December 1872) was a Scottish mechanical engineer who also contributed to civil engineering, physics and mathematics.

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Willis Carrier

Willis Haviland Carrier (November 26, 1876 – October 7, 1950) was an American engineer, best known for inventing modern air conditioning.

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Wind tunnel

A wind tunnel is a tool used in aerodynamic research to study the effects of air moving past solid objects.

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Zone valve

A zone valve is a specific type of valve used to control the flow of water or steam in a hydronic heating or cooling system.

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[1] https://en.wikipedia.org/wiki/HVAC

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