How Convert 1 gal of chilled water to Tons
How Convert 1 gal of chilled water to Tons
(OP)
Hello Everybody,
I'm trying to convert a gallon of chilled water to TONS.
Is this correct?
1. The weight of 1 gal of water is 8.35 lbm
2. From saturated liquid tables I get uf (internal energy @ 50F temp) = 18.06 btu/lbm
3. 1 Ton = 12000 btu
Therefore,
1 gal (8.35 lbm/1 gal)(18.06 btu/lbm)(1 ton / 12000 btu)
Is this correct?
Thank you in advance for any help on this question,
V.
I'm trying to convert a gallon of chilled water to TONS.
Is this correct?
1. The weight of 1 gal of water is 8.35 lbm
2. From saturated liquid tables I get uf (internal energy @ 50F temp) = 18.06 btu/lbm
3. 1 Ton = 12000 btu
Therefore,
1 gal (8.35 lbm/1 gal)(18.06 btu/lbm)(1 ton / 12000 btu)
Is this correct?
Thank you in advance for any help on this question,
V.





RE: How Convert 1 gal of chilled water to Tons
1 ton of refrigeration is 12,000 BTU/h. It is a unit of POWER.
Change in energy per time.
It is impossible to convert the energy in a gallon of water to tons (or any other unit of power) because you have only one energy state and no time.
RE: How Convert 1 gal of chilled water to Tons
In US units, you need gallons per minute (GPM), not gallons, and the delta-T (which corresponds to the delta-enthalpy of liquid water) of the chilled water to compute power.
(Total heat into the chiller - Total heat out of the chiller) / time period
Good on ya,
Goober Dave
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RE: How Convert 1 gal of chilled water to Tons
What kind of tons. Short, long, metric, registered gross?
RE: How Convert 1 gal of chilled water to Tons
Unless you are talking about a nuclear reaction converting a mass to an energy unit isn't happening.
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
RE: How Convert 1 gal of chilled water to Tons
if 1 ton = 12000 Btu/hr (in refrigeration)
and chilled water has 18.06 Btu/lbm = 18.06*8.35 Btu/gallon
(mind you i remember 1 gallon of water weighing 10 lbs (ie lbf) ... but ...)
so 12000/(18.06*8.35) would be the number of gallons of chilled water to provide 1 ton of refrigeration (power)
(which looks like the reciporical of the OP's calc)
RE: How Convert 1 gal of chilled water to Tons
RE: How Convert 1 gal of chilled water to Tons
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RE: How Convert 1 gal of chilled water to Tons
RE: How Convert 1 gal of chilled water to Tons
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RE: How Convert 1 gal of chilled water to Tons
Why?
The OP is confused on fundamental principles. Until you grasp the fundamentals the unit system is irrelevant.
RE: How Convert 1 gal of chilled water to Tons
RE: How Convert 1 gal of chilled water to Tons
we're not talking about a ton as a weight (be it 2240 lbs, 2000 lbs, or whatever) but a ton as a unit of refrigeration power ...
i somehow think the OP knew what he wanted, just failed to express it (clearly)
RE: How Convert 1 gal of chilled water to Tons
RE: How Convert 1 gal of chilled water to Tons
Because apparently "ton" has 3 definitions in a non-metric environment, which is the initial source of the OP's confusion.
Not to forget that a gallon in America is different from a gallon in England, which sure doesn't make things any easier to understand.
NX 7.5.5.4 with Teamcenter 8 on win7 64
Intel Xeon @3.2GHz
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RE: How Convert 1 gal of chilled water to Tons
Katmar Software - Engineering & Risk Analysis Software
http://katmarsoftware.com
"An undefined problem has an infinite number of solutions"