National Academies Press: OpenBook

ACRP Web-Only Document 41: Alternative Jet Fuels Emissions: Quantification Methods Creation and Validation Report (2019)

Chapter: 8.0 Instructions to Use the Alternative Jet Fuel Assessment Tool

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Page 62
Suggested Citation:"8.0 Instructions to Use the Alternative Jet Fuel Assessment Tool." National Academies of Sciences, Engineering, and Medicine. 2019. ACRP Web-Only Document 41: Alternative Jet Fuels Emissions: Quantification Methods Creation and Validation Report. Washington, DC: The National Academies Press. doi: 10.17226/25548.
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Page 62
Page 63
Suggested Citation:"8.0 Instructions to Use the Alternative Jet Fuel Assessment Tool." National Academies of Sciences, Engineering, and Medicine. 2019. ACRP Web-Only Document 41: Alternative Jet Fuels Emissions: Quantification Methods Creation and Validation Report. Washington, DC: The National Academies Press. doi: 10.17226/25548.
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Page 63
Page 64
Suggested Citation:"8.0 Instructions to Use the Alternative Jet Fuel Assessment Tool." National Academies of Sciences, Engineering, and Medicine. 2019. ACRP Web-Only Document 41: Alternative Jet Fuels Emissions: Quantification Methods Creation and Validation Report. Washington, DC: The National Academies Press. doi: 10.17226/25548.
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Page 64

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Emissions Quantification Methodology Report: ACRP 02-80 Quantifying Emissions Reductions at Airports from the Use of Alternative Jet Fuel Emissions Quantification Methodology Report Page 62 8.0 Instructions to Use the Alternative Jet Fuel Assessment Tool The Alternative Jet Fuel Assessment Tool is a Microsoft Excel-based tool designed to help airports estimate the reduction in aircraft landing takeoff (LTO) cycle emissions from the use of SAJF. The tool models emissions of SOx, nvPM, CO, UHC, NOx, and HAPs. The homepage of the tool shows two options to estimate the percentage reduction in emissions at the specified SAJF blend percentage as shown in Figure 22. Option 1 evaluates emissions reduction based on the airport’s annual emissions inventory for each pollutant. Option 2 evaluates emissions reduction based on a description of the airport’s operational characteristics. Figure 22: Home page of the Alternative Jet Fuel Assessment Tool If the user selects Option 1 on the Home page, the tool displays an Inputs page shown in Figure 23. The text box on the left contains instructions for data entry and page navigation. Figure 23: Layout of the Inputs page for Option 1 The user can enter airport emissions information by pollutant and the alternative jet fuel blend percentage, then click on the Results button in the navigation bar to view the analysis. The user can return to the Home page or clear the form using the Reset button. The tool will not display the Results page

Emissions Quantification Methodology Report: ACRP 02-80 Quantifying Emissions Reductions at Airports from the Use of Alternative Jet Fuel Emissions Quantification Methodology Report Page 63 unless all inputs have been entered; an error message will notify the user of missing inputs as shown in Figure 24. Figure 24: Example of an error message when required input information is missing If the user selects Option 2 on the Home page, the tool displays an input form shown in Figure 25. The text box on the left contains instructions for data entry and page navigation. The user can enter the number of non-piston and piston operations and alternative jet fuel blend percentage. The user can select the airport category and airport operations description, then click on the Results button in the navigation bar to view the analysis. As with the Option 1 Inputs page, the user can return to the Home page or clear the form using the Reset button. The tool will not display the Results page unless all inputs have been entered; an error message will notify the user of missing inputs. Figure 25: Layout of Inputs page for Option 2 The Results pages for both input options are the same. As shown in Figure 26, the left panel summarizes the user inputs and provides navigation instructions. The center panel displays the expected reduction in each pollutant’s emissions along with an uncertainty bound at the specified SAJF blend percentage. The right panel plots the expected reduction in each pollutant’s emission at various SAJF blend percentages.

Emissions Quantification Methodology Report: ACRP 02-80 Quantifying Emissions Reductions at Airports from the Use of Alternative Jet Fuel Emissions Quantification Methodology Report Page 64 The plot also displays a vertical red line which indicates the SAJF blend percentage the user entered on the Inputs page. The user can return to the Home page or the Inputs page using the navigation bar. Figure 26: Layout of the Results page

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ACRP Web-Only Document 41: Alternative Jet Fuels Emissions: Quantification Methods Creation and Validation Report Get This Book
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One of the most challenging environmental issues facing the aviation industry today is the impact of jet fuel emissions on the global climate. The use of sustainable alternative jet fuels (SAJF) to reduce aircraft emissions will become significantly more important in coming years. Capturing the air quality benefits in a way that is useful to airports requires understanding how SAJF reduce pollutant emissions, quantifying the reduction, and demonstrating the impact through an easy-to-use tool that airports can apply to their emissions inventories.

ACRP Web-Only Document 41: Alternative Jet Fuels Emissions: Quantification Methods Creation and Validation Report represents the second phase of this ACRP work. The first phase provided an understanding of how SAJF impacts aircraft emissions. This phase analyzes the data compiled in the report to quantify SAJF emission impacts.

Results of this analysis were subsequently used to develop a simplified tool that will allow airports to easily estimate emission reductions from use of SAJF at their airport. The Alternative Jet Fuel Assessment Tool and the Sustainable Alternative Jet Fuels and Emissions Reduction Fact Sheet are the two key products from ACRP 02-80.

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