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Anonymous Poster

Refrigeration and Liters and AC in Tons

06/23/2009 8:17 AM

Why refrigeration comes in Liters and AC in tons
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TVP45
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Join Date: Jul 2007
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#1

Re: Why refrigeration comes in Liters and AC in tons

06/23/2009 9:23 AM

Well, the ton unit goes back to the start of refrigeration - ice plants. A ton is more correctly the capacity to turn a ton of 32°F water into a ton of 32°F ice. The latent heat is 144 BTU/lb. So multiply that by 2000 lb/ton and you get 288000 BTU. Divide by 24 hr/day and you get 12000 BTU/hr to make a ton of ice in 1 day. Everybody drops the "in one day" part, but that's what it means.

I'm puzzled about the "liter" unit. Refrigerators are sized by volume (cubic feet in the US and liters in Europe). Is that what you mean? That relates to the amount of product they hold and is only approximately related to power.

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PWSlack
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#2

Re: Refrigeration and Liters and AC in Tons

06/24/2009 3:28 AM

Furlongs per square fortnight is a valid unit of acceleration.

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Turbotroll3
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#3

Re: Refrigeration and Liters and AC in Tons

06/24/2009 4:48 PM

I prefer elephants per astronaut as my favorite nonsense measurement.

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