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.
As most people would vary the settings, depending on the temperature, the gas bottle will last some duration between 147 and 367 hours. So, if you use your heater for four hours every evening, you would expect your gas bottle to last anywhere from 37 to 92 days. Hot Water Consumption Calculations: A 16L/min 130MJ 5.0 Star continuous flow hot water heater running at full capacity will last for 16.9 hours of actual run time. This equates to about 204 five minute showers. However, the water heater can run at a flow rate of as little as 3.5L/min. When running slower, the unit will self-modulate and consume less gas. This would increase the run time by roughly 4X or to about 68 hours.