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Geminus Boeing Project Contract No.EVE-16-2929 <br /> 1 Technology Development CEI Project No. 160731 <br /> • All of the overspray volatiles can be modeled as heptan-2-one, which makes up <br /> —40% of the paint mass. Heptan-2-one has an LEL of 1.11%, which is <br /> characteristic of the other volatile ingredients. <br /> • Atomizing air flows out of the spray gun at —17 scfm. Reference [20] shows that <br /> a typical air consumption value for the spray gun is 20 scfm. Discussions with the <br /> manufacturer indicate that —3 scfm of that is used to power the spray gun turbine <br /> and balance goes to atomizing the paint [22] <br /> 2.3.5.2 Case 2 and Case 3 Paint Scenario & Configuration <br /> For Cases 2 and 3, the CFD paint model assumed primer paint. The paint parameters that <br /> were used is the Run 3 spray conditions identified in Figure 2. Boeing decided it was sufficient <br /> to simulate Case 2 and 3 scenarios using the Run 3 spray gun condition, instead of the baseline <br /> clear coat condition. <br /> 19 <br />