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Air-conditioner sizes are often given as "tons" of cooling, where 1 ton of cooling equals 12,000 BTU/h (3.5 kW). 1 ton of cooling equals the amount of power that needs to be applied continuously over a 24-hour period to melt 1 ton of ice. The annual cost of electric energy consumed by an air conditioner may be calculated as follows:
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 system. [1] An air handler is usually a large metal box containing a blower , furnace or A/C elements, filter racks or chambers, sound attenuators , and dampers . [ 2 ]
The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]
An air source heat pump (ASHP) is a heat pump that can absorb heat from air outside a building and release it inside; it uses the same vapor-compression refrigeration process and much the same equipment as an air conditioner, but in the opposite direction. ASHPs are the most common type of heat pump and, usually being smaller, tend to be used ...
2.16 future of low-cost carrier. 8 comments. 2.17 ... 21.6 Price tag of a ... The idea that you can lose weight this way is only due to this mix-up of units. ...
SD2 Butterfly Bomb circa 1940. Wings rotate as bomb falls, unscrewing the arming spindle connected to the fuze.. The first significantly operationally used [3] cluster bomb was the German SD-2 or Sprengbombe Dickwandig 2 kg, commonly referred to as the Butterfly Bomb. [4]
The 1975 spring offensive (Vietnamese: chiến dịch mùa Xuân 1975), officially known as the general offensive and uprising of spring 1975 (Vietnamese: Tổng tiến công và nổi dậy mùa Xuân 1975), was the final North Vietnamese campaign in the Vietnam War that led to the capitulation of Republic of Vietnam.
590 Madison Avenue, also known as the IBM Building, is a skyscraper at 57th Street and Madison Avenue in the Midtown Manhattan neighborhood of New York City.Designed by Edward Larrabee Barnes and Associates the 41-story, 603-foot (184 m)-tall tower was developed for the technology company IBM and built from 1978 to 1983.