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All estimated cost and CO2 savings are based purely on reduced fuel usage and do not include other cost reductions including increased yields, reduced labor, and increased productivity realized through a Loring roaster. We assume a Loring roaster uses the equivalent amount of fuel to roast an equal amount of coffee beans as a conventional roaster minus the fuel needed for an afterburner. Actual savings figures may be more or less then stated figures depending on the fuel usage of your current afterburner or efficient afterburner and operating weeks per year compared to our baseline figures as stated below. All calculations are based off a constant fuel price at time zero. A detailed list of assumed constants and related sources can be found below.
- 95,500 BTU's*(1) =1 Gallon of Propane = 12.65 lbs of CO2 **(1)
100,000 BTU's *(2)= 1 Therm of Natural Gas = 13.446 lbs. of CO2**(2)
- 1 Mature Urban Tree = 78 lbs. of CO2 absorbed per year***
1 Average Passenger vehicle = 10,200 lbs. of CO2 emitted per year****
- Standard afterburner = 1,000,000 BTU’s per hour
- Efficient afterburner = 500,000 BTU’s pre hour
Calculations assume both efficient and standard afterburners run for 50% of total roast time. Calculations are based on 52 weeks of operation per year.
- 1 Gallon of Propane = $2.86 (National Avg. 1/’12)****(1)
1 Therm of Natural Gas = $0.84 (National Avg. 1/’12)****(2)