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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:
Air conditioning, often abbreviated as A/C (US) or air con (UK), [1] is the process of removing heat from an enclosed space to achieve a more comfortable interior temperature and in some cases also controlling the humidity of internal air.
In this system the solar thermal panel performs the function of the low temperature heat source and the heat produced is used to feed the heat pump's evaporator. [29] The goal of this system is to get high coefficient of performance ( COP ) and then produce energy in a more efficient and less expensive way.
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 ]
In 1881, British steel rails sold for $31 a ton, and if Americans imported them they paid a $28/ton tariff, giving $59/ton for an imported ton of rails. American mills charged $61/ton and made a good profit, which was then reinvested into increased capacity, higher quality steels, higher wages and benefits and more efficient production. [ 79 ]
Missouri State University (MSU or MO State), formerly Southwest Missouri State University, is a public university in Springfield, Missouri, United States.Founded in 1905 as the Fourth District Normal School, it is the state's second-largest university by enrollment, with an enrollment of 23,418 in the fall semester of 2023. [5]
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