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Why the word ton used for airconditioner.

I wanted to know that why the word ton is used in measuring the capacity of the airconditioner, why the word ton is only used for aircontioner not for any other appliance
how the word ton was decided to be used while the word aircondition or the product was invented.

what is the formula of calculating the tonage, what is EER, BTU.


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  • Anonymous Mar 30, 2014

    need to fine out the tons on the aircondition

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Hi there..

this what i found for you...

The unit ton is used in refrigeration and air conditioning to measure heat absorption. Prior to the introduction of mechanical refrigeration, cooling was accomplished by delivering ice. Installing one ton of refrigeration replaced the daily delivery of one ton of ice.

  • In the United States, a standard ton of refrigeration = 12,000 BTU/h = 200 BTU/min ≈ 3,517 W. It is approximately the power required to cool 1 short ton of water by 1 °F every 10 minutes; or the power required to melt one short ton (2,000 lb) of ice at 0 °C in 24 hours.
  • A ton is also a unit of energy equal to that power for a period of a day, or 24 h × 12,000 BTU/h = 288,000 BTU ≈ 303.9 megajoules.
  • A less common usage is the power required to cool 1 long ton of water by 1 °F every 10 minutes = 13,440 BTU/h ≈ 3,939 W.
All the Best.

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Posted on Feb 24, 2008

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