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.
Heater is an object that emits heat.
Heater may also refer to:
In electronics:
In music:
In other fields:
Targetmaster is a subline of the Transformers toyline that include Nebulan sidekicks who can transform into the Transformers' weapons.
The first Targetmasters assortment, released in 1987, included six new characters, and five existing ones from the 1986 line, whose toys were slightly remolded with larger peg holes to hold their new weapons, as well as an additional peg hole for each remold to mount its weapon in vehicle mode. In 2003, one of the two Japanese-exclusive Targetmasters from 1987 was added to the Autobot ranks. Unfortunately, the Targetmaster weapon he shares with Decepticon Cyclonus, also share names. To further add to the confusion, the printed names of Stepper and Artfire's weapon/partners in Japan are swapped. Cyclonus's partner Nightstick is called Nebulon (the name Fracas is erroneously given on Scourge's box) and paired with Stepper. Scourge's partner Fracas is called Nightstick and paired with Artfire.
The smaller Targetmaster partners were easily lost making them highly collectable and demand high prices on the secondary market.
Dada (/ˈdɑːdɑː/) or Dadaism was an art movement of the European avant-garde in the early 20th century. Dada in Zürich, Switzerland, began in 1916 at Cabaret Voltaire, spreading to Berlin shortly thereafter, but the height of New York Dada was the year before, in 1915. The term anti-art, a precursor to Dada, was coined by Marcel Duchamp around 1913 when he created his first readymades. Dada, in addition to being anti-war, had political affinities with the radical left and was also anti-bourgeois.
At least two works qualified as pre-Dadaist, a posteriori, had already sensitized the public and artists alike: Ubu Roi (1896) by Alfred Jarry, and the ballet Parade (1916–17) by Erik Satie. The roots of Dada lay in pre-war avant-garde. Cubism and the development of collage, combined with Wassily Kandinsky’s theoretical writings and abstraction, detached the movement from the constraints of reality and convention. The influence of French poets and the writings of German Expressionists liberated Dada from the tight correlation between words and meaning. Avant-garde circles outside France knew of pre-war Parisian developments. They had seen (or participated in) Cubist exhibitions held at Galería Dalmau, Barcelona (1912), Galerie Der Sturm in Berlin (1912), the Armory show in New York (1913), SVU Mánes in Prague (1914), several Jack of Diamonds exhibitions in Moscow and at De Moderne Kunstkring, Amsterdam (between 1911 and 1915). Futurism developed in response to the work of various artists. Dada subsequently combined these approaches.
Dada is an action Hindi film made in 2000. A revenge drama, with Mithun in the lead role.
A story of a simpleton whose life changes when he witnesses a shoot-out of a Don and rescues him. The don takes him as his successor. How the negative elements of the underworld influence him forms the film's finale.
Dada is a three piece rock band from California (United States). The band is made up of Michael Gurley (guitar/co-lead vocals), Joie Calio (bass/co-lead vocals) and Phil Leavitt (drums).
The band's songs feature both Michael and Joie sharing the vocals on each song. The group write highly melodic, harmony laden tunes, and their constant touring with two and a half to three hour performances has won them a wide fanbase.
1992 saw the release of their debut album Puzzle. First single "Dizz Knee Land" quickly became a staple of radio across the U.S. and reached as far as Australia, where the song and album went on high rotation on national radio station 'Triple J'. "Dizz Knee Land" reached number 2 on the Billboard Heatseekers chart, number 5 on the Billboard Modern Rock chart and number 27 on the Billboard Mainstream Rock Chart;Puzzle went on to sell more than half a million copies and earned an RIAA Gold Record award. dada toured for the album with bands such as Crowded House and Izzy Stradlin & the Ju Ju Hounds, as well as Sting.