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.
One litre of LPG has approximately 25MJ of energy content. An 8.5kg gas bottle contains just a bit less than 17 litres or approximately 417MJ of energy. So, to determine how long the 8.5kg gas bottle will last, you just divide 417 by the MJ rating of the BBQ or patio heater.BQ Example 1: You turn on 2 burners set to high. Each burner is rated at 15MJ so thats 15x2=30MJ/hour of gas consumption. Then divide that into 417 (the number of MJ in the bottle) to get the running time: 417Ã·30=13.9 hours.