# Thread: Difference between Tons and Ton-Hours?

1. Originally Posted by Jim1959
I think BTU is sensible heat and Ton is latent heat.
No, its not.

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And as has been said many a time, one watt is not a very bright bulb.
unless it's LED

3. Originally Posted by beenthere
No, its not.
Or, as one of my AC instructors back in 1997, Mr. Abbott would say, “That's a good guess” or maybe my personal favorite “Body shop is right down the hall!”

4. I think both are both - well; in refrigeration anyway.

PHM
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Originally Posted by Jim1959
I think BTU is sensible heat and Ton is latent heat.

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Quote Originally Posted by Jim1959
I think BTU is sensible heat and Ton is latent heat.
Originally Posted by beenthere
No, its not.
The "Ton" is based on 2,000# of 32° ice transforming into 2,000# of 32° water.
In other words 2,000# x the latent heat of Fusion (144btu's/#) is 288,000btu's.
So in that sense, a "ton" WAS originally based on latent heat.

NOTE that 288,000 is for a day/24 hrs.
This was divided by 24 (as in hours) hence 12,000 btu's/ton (at least for an A/C ton).

6. Originally Posted by ESokoloff
The "Ton" is based on 2,000# of 32° ice transforming into 2,000# of 32° water.
In other words 2,000# x the latent heat of Fusion (144btu's/#) is 288,000btu's.
So in that sense, a "ton" WAS originally based on latent heat.

NOTE that 288,000 is for a day/24 hrs.
This was divided by 24 (as in hours) hence 12,000 btu's/ton (at least for an A/C ton).
How many BTUs in a Ton was determined that way. But it still doesn't make Ton latent heat , and BTU sensible heat.

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