In a 30-pound tank there will be approximately 7.1 gallons of liquid propane. Liquid propane weighs around 4.2 pounds per gallon. Therefore dividing the 30 pounds of weight in the tank by 4.2 will give the result of how many gallons this is equivalent to. This weight can vary depending on the pressure that is enforced on the propane but a calculated estimation gives the result 7.1 gallons.
Propane is typically found as a gas but for transferal and transportation it can be compressed into a liquid. Propane is a natural by product of petroleum refining and natural gas processing. Propane is 1.5 times as dense as air and in its raw state it will sink and pool at the floor. At atmospheric pressure, liquid propane will flash to a vapor and appear white due to condensing moisture in the air. It is nontoxic but can cause asphyxiation when inhaled. When used in household products, propane is stored in a pressured container.
Propane is used commonly in cars due to its liquid state at a moderate pressure. It is cleaner, results in less engine wear and does not dilute engine oil. Propane is often combined with butane to create liquefied petroleum gas, something that is commonly used as fuel for portable stoves, central heating, barbecues and engines. Propane can also be used for refrigeration, particularly off-the-grid. A gas absorption refrigerator allows propane to be used in stationary refrigerators. It cannot, however, be used in refrigerators for motor vehicles. Propane is also the main fuel used in hot air balloons and is used in the film industry for explosions and special effects.
While it is difficult to give an exact and accurate calculation for the amount of gallon of propane in a 30 pound tank, using general calculations an answer of 7.1 gallons can be produced.
