You cannot use output pressure to tell how full a tank is. The pressure will remain constant until it's just about out of propane. You can use weight, if you know how much it weighs when empty, and when full - then it's just simple math.
The propane tank holds 30 liters.
One gallon of propane weighs 5 pounds. The tank would hold 60 gallons.
The cost of a 20 lb tank of propane can vary depending on your location and current market prices. On average, you can expect to pay between $15 to $30 to refill a 20 lb tank of propane. It's best to check with local suppliers for current pricing.
Assuming each use consumes 1 lb of propane (30 minutes on a 3 burner grill), a 20 lb propane tank would provide approximately 20 uses (20 lbs ÷ 1 lb/use). This calculation may vary based on factors such as grill efficiency and outdoor temperature.
This is a list of some of the available smaller size propane tanks: * 20# = 4 gallon * 30# = 7 gallon * 40# = 10 gallon * 60# = 15 gallon * 100# = 25 gallon ...and then there are the larger home tanks ranging from 250, 200, 750 and 1,000 gallons.
A 30-pound propane tank typically holds about 7 gallons of propane. This is because propane is stored under pressure, and one gallon of propane weighs approximately 4.24 pounds. Therefore, a tank with a capacity of 30 pounds can be filled to hold around 7 gallons of liquid propane.
About 30 pounds.
The propane tank holds 30 liters.
To find out how many gallons are left in the tank at 30%, you can multiply the tank's total capacity by 0.30 (which represents 30%). For a 250 gallon tank, this would be 250 * 0.30 = 75 gallons left at 30%.
. . . . 30 pounds
One gallon of propane weighs 5 pounds. The tank would hold 60 gallons.
30. You just said it's a 30 gallon tank.
a typical steel "30 pound" liquid propane tank weighs about 25-28 pounds empty.propane tank markings (on collar)propane weighs about 4.125 pounds per gallon and a "30 pound tank" willhold about 7.5 gallons so a full tank will weigh about 55 pounds or so./source: wiki.answers.com/
The lower heating value of propane is about 45 megajoules per kilogram (MJ/kg). A "20 pound" portable propane tank holds about 18 pounds, or about 8 kg of propane, so the the heating value is somewhere around 360 MJ. A megawatt-hour is one megawatt for an hour, or 3600 megawatt-seconds, which is the same as saying 3600 MJ. So a tank of propane has a raw energy equivalent of about 0.1 MW-hr, or 100 kW-hr. If you're talking about turning it into electricity, that's a different matter. Internal combustion engines typically have a thermodynamic efficiency of around 30%, so you can't get more than about 30 kW-hr out of that much fuel.
As long as their is some liquid propane left inside the vessel the psi will change with the temperature. Makes no difference what size the vessel is, 20lb-1000lb same temperature same pressure. At 80 deg F the pressure is about 80psi.
The water pressure depends on the residual air pressure in the tank. Normally it should be between 30 -50-psi. Tank air pressure is important, it should be about 27-29 when water is nearly empty.
The letters "TW" on a propane tank stand for "Tested Water," indicating that the tank has been tested for water capacity. "DT" refers to "Design Type," which is part of the tank's specification related to its design and construction. These markings help ensure the tank meets safety regulations and standards for storage and transportation of propane.