Aluminum is the most abundant metallic element in the Earth's crust. Bauxite ore is the main source of aluminum. Aluminum is used in automobiles and airplanes (36%), bottling and canning industries (25%), building and electrical (14%) and in other applications (25%).
A: The average propane consumption per year for whole-house heating is estimated to be between 1200 and 1500 gallons per year for a 2,200 square foot home. However, the amount of propane a household uses varies depending on its specific uses in the household.
A propane refrigerator uses what is called an absorption process to cool the refrigerator. This process is powered by heat. The heat can either be produced electrically or by combustion. A 10 cubic foot propane refrigerator will typically consume 1.5 lbs, or .375 gallons, of propane per day. The energy content of 1.5 lbs of propane is 32,250 Btu or about 9485 watt hours. The Sun Frost RF12 consumes only 24 amps hours a day, which is equivalent to 288 watt hours a day.