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www.triangletube.com. Prepared for: . Customer Name: . Day Phone:. Street:. Evening Phone:. Street:. Cell Phone:. City, State, Zip:. email:. Heat lost in Flue gas = 5%. Heat gained by condensing = 10%. Triangle Tube Boiler Fuel Cost Savings Worksheet.
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www.triangletube.com Prepared for: Customer Name: Day Phone: Street: Evening Phone: Street: Cell Phone: City, State, Zip: email: Heat lost in Flue gas = 5% Heat gained by condensing = 10% Triangle Tube Boiler Fuel Cost Savings Worksheet Heat extracted without condensing = 85 % Total Efficiency = 95% Triangle Tube’s boilers gain efficiency over older boilers by: Modulating = running longer at lower temperatures Condensing = gaining heat from flue gas vapors Outdoor air = Old boilers send indoor air through the boiler and up the chimney, wasting heat and creating drafts. Triangle Tube boilers use outside air for combustion, eliminating this waste. Outdoor Reset = Adjusts the temperature of the system based on the outside temperature. As the outdoor temperature increases, the boiler system temperature decreases, improving efficiency. Fuel Cost Evaluation To measure the impact of changing to a new Natural Gas boiler from another fuel in the old boiler. Please skip to the other side if your new boiler will use the same fuel as the existing boiler. Fuel Heat Content Ratio: Natural Gas Measures the relative heat content of a unit of fuel. Example: Old Fuel is Oil and New Fuel is Natural Gas measured in Therms. The Fuel Heat Content Ratio is 1.39 Fuel Cost Ratio: Measures the relative cost of a unit of fuel. Fuel Cost Ratio = Cost per unit of New Fuel / Cost per unit of Old Fuel. Example: New Fuel = Natural Gas = $1.45 / therm : Old Fuel = Oil = $2.95 / gallon: Example: Fuel Cost Ratio = $1.45 / $2.95 = 0.49 / = New Fuel Cost Old Fuel Cost Fuel Cost Ratio (for next page)
www.triangletube.com Boiler Efficiency Evaluation Information from Existing (Old) Boiler Rating Plate Boiler Output: BTU/Hour Boiler Input: BTU/Hour Existing Boiler Efficiency Calculation Actual efficiency for older, Non-Modulating Boilers is approximately 5% less than the rated Output / Input Ratio. This reduction is due to standby losses, chimney drafting losses, standing pilot losses, use of indoor combustion air, lack of outdoor reset, and other factors. Triangle Tube boilers virtually eliminate all of these losses. Approx. efficiency of the existing boiler = EFFOld= ([Boiler Output/Boiler Input]-0.05) X 100 Example: Boiler Plate Data: Output = 105,000 BTU/Hr, Input = 130,000 BTU/Hr. EFFOld = ([ 105,000 / 130,000 ] – 0.05) X 100 = 76 % Your calculation: EFFOld = ([ / ] – 0.05) X 100 = % Boiler Efficiency Ratio Boiler Eff. Ratio = EFFOld / EFFNew Triangle Tube EFFNew = 95% Example: Boiler Eff. Ratio = 76% / 95% = 80% / 95% = % Boiler Eff. Ratio = Total Fuel Cost Savings X X X = Annual fuel cost with old boiler. Boiler Eff. Ratio (from above) Fuel Heat Content Ratio Fuel Cost Ratio Annual fuel cost with Triangle Tube boiler. (Skip if not changing fuels.) (Skip if not changing fuels.) Cost Savings = Annual fuel cost with Triangle Tube boiler. Annual fuel savings with Triangle Tube boiler. Annual fuel cost with old boiler. * To achieve the highest efficiency, outdoor reset must be used. * The numbers shown here are a basic comparison based on history. Actual fuel costs will vary depending on actual fuel prices, weather, degree days, thermostat settings, and overall weatherproofing of the building. Mkt – Fuel Savings – 2010-07
