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Sun Dec 31, 2006 11:14 pm
Liquid propane delivered by gallon, but sold by the hundred cubic feet at the meter.
Sat Jan 20, 2007 12:56 am
[quote="Carpenter"]Liquid propane delivered to manager of mobile home park. Stored in large tank. Then piped through individual residential vapor meters into each resident's unit. Resident pays so much per 100 cubic feet of gas. They want to know if they are being overcharged for their gas usage based on the cost of propane ($2.08 per gallon) to the manager of mobile home park. Manager is not allowed to exceed 10 % of cost of propane. Is there a conversion factor for determining price of cubic feet of propane gas to price per gallon of liquid propane?
Mon Mar 10, 2008 12:45 am
Thank you for the valuable info !
Wed Mar 26, 2008 12:17 am
COMPRESSED PROPANE (GASEOUS FORM) EQUIVALENCY INFORMATION: At 14.73 lbs. of pressure per square inch (psi) and 60 degrees Fahrenheit:
* 1 cubic foot propane = 0.0278 gallons propane
* 100 cubic feet propane = 2.78 gallons propane
* 1 gallon propane = 35.97 cubic feet propane
* 100 gallons propane = 3597 cubic feet propane
WHAT IS THE CONVERSION RATE BASED ON 10PSI AND 25 PSI?
Fri Jan 16, 2009 8:25 pm
Carpenter wrote:Liquid propane delivered by gallon, but sold by the hundred cubic feet at the meter.
31 cubic feet into gallons of liquid propane
Thu Feb 12, 2009 3:16 am
Elevation has to be figured into the equation - not sure of that figure for various elevations. Not a math whiz but at 4000' the elevation adjustment is as follows:
500 cu x .90 = 450 cubic feet = 12.4 gallons.
I take no pride of authorship on this - info came from our propane company. I found this post when trying to figure for myself.
Tue Aug 21, 2012 6:03 am
My propane tank is 12 feet long and 2.25 feet in diameter. Approx how many gallons of propane will it hold?
Tue May 07, 2013 10:54 am
A 12'x2.25' diameter cylinder (with flat ends) would have a volume of 47.713 ft^3. Usually gas tanks have domed ends, so I'm going to assume that the two ends would combine to a sphere with radius 2.25'/2 =1.125'. That would leave the length of the cylindrical part to be 9.75' (12.0' - 1.125' - 1.125').
Let L = 9.75', r = 1.125'
So the volume would be that of the cylinder plus that of the sphere: (L * Pi * L^2) + ((4/3) * Pi * r^3) = 44.73 ft^3.
If it were a pure cylinder the volume would be: 12' * Pi * r^2 = 47.713 ft^3.
You're holding liquid fuel, so you would have a different amount of gallons per cubic foot that was provided earlier (35.97 CuFt / 1 Gallon).
It would take 7.48 liquid gallons to fill 1 cubic foot. Just convert inches to centimeters and liters to gallons to determine that!
So a 12'x2.25' cylinder would hold 47.713 ft^3 * 7.48 gal/ft^3 = 356.9 gallons.
The domed end tank would hold 44.73 ft^3 * 7.48 gal/ft^3 = 334.6 gallons.
I may be a little off, but I think I'm right on this!
Thu Sep 26, 2013 6:21 am
Two other variables would also apply to the conversion and the question regarding volume.
My gas supplier always quotes the liquid gallons volume as corrected to 60 degrees F. I don't know how significant this but they seem to think so.
The supplier always fills to 80% of volume to leave evaporation space... So the usable volume of the tank would be 80% of the calculated volume.
Thu Oct 24, 2013 2:32 pm
iquid propane has a specific gravity of 0.504 at 60º F, which equals approximately 4.20 lb/gal at the same temperature. 1 gallon (US) is equal to 0.13368 ft3
40 lbs / 4.20 lb/gal = 9.52 gallons
9.52 gallons * 0.13368 gallons/ft3 = 1.27 ft3
The ratio of expansion for propane from a liquid to gas is approximately 277:1, so 1.27 ft3 liquid converts to 351.8 ft3 of gas
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