Alpacas are raised for their soft and luxurious fleece (sometimes called fiber). Each shearing produces roughly five to ten pounds of fleece per animal, per year. This fleece, often compared to cashmere, can be turned into a wide array of products from yarn and apparel to tapestries and blankets.
1 gallon of propane is about 90,000 BTU/hour. A 20 lb tank holds a little more than 4 gallons. My patio propane fireplace is 60,000 BTU. At full blast, a 20 lb tank will last about 6-7 hours, which is really close to the calculation. 32 people found this useful.
1 gallon of propane is about 90,000 BTU/hour.   : A 20 lb tank holds a little more than 4 gallons.   : My patio propane fireplace is 60,000 BTU. At full blast, a 20 lb t â¦ ank will last about 6-7 hours, which is really close to the calculation.he MH80CV, part of the Mr. Heater Contractor Series, is a 30,000-80,000 BTU Propane Convection heater. The MH80CV provides reliable heat for areas up to 1900 sq. feet. It wil â¦ l operate for up to 14 hours on a 20-lb propane tank.