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It was originally defined as the rate of heat transfer that results in the freezing or melting of 1 short ton (2,000 lb; 907 kg) of pure ice at 0 °C (32 °F) in 24 hours. [1] [2] The modern definition is exactly 12,000 Btu IT /h (3.516853 kW). Air-conditioning and refrigeration equipment capacity in the U.S. is often specified in "tons" (of ...
The original definition of a "ton of cooling capacity" (heat flow) was the heat needed to melt one ton of ice in a 24-hour period. This heat flow is what one would expect in a 3,000-square-foot (280 m 2 ) house in Boston in the summer.
[30] This is approximately the power required to melt one short ton (2,000 lb or 907 kg) of ice at 0 °C (32 °F) in 24 hours, thus representing the delivery of 1 short ton (0.893 long tons; 0.907 t) of ice per day. A less common usage is the power required to cool 1 long ton (2,240 lb or 1,016 kg = 1 long ton or 1.120 short tons or 1.016 t) of ...
1 ton of cooling, a common unit in North American refrigeration and air conditioning applications, is 12,000 Btu/h (3.52 kW). It is the rate of heat transfer needed to freeze 1 short ton (907 kg) of water into ice in 24 hours.
Another unit common in non-metric regions or sectors is the ton of refrigeration, which describes the amount of water at freezing temperature that can be frozen in 24 hours, equivalent to 3.5 kW or 12,000 BTU/h. [1] [2] [3]
A pint (16 ounces) of generic ice cream you can find at the grocery store hovers around $5, while a pint of artisanal ice cream — think Jeni’s, Van Leeuwen, or McConnell’s — costs anywhere ...
By 1879, householders in the eastern cities were consuming two thirds of a ton (601 kg) of ice a year, being charged 40 cents ($9.30) per 100 pounds (45 kg); 1,500 wagons were needed just to deliver ice to consumers in New York. [88] In supplying this demand, the ice trade increasingly shifted north, away from Massachusetts and towards Maine. [89]
The Port of Baltimore shared an image of the crane barge, Donjon's Chesapeake 1000, which ABC News reported was onsite Friday morning at the site of the Francis Scott Key Bridge. The span ...