Figure 10
The x-axis represents the sealing time constant τ in seconds, ranging from 0 to 20. The y-axis represents the interior pressure change in kilopascals (kPa), ranging from 0 to 3.5. Three lines show the interior pressure change for 1-second, 3-second, and 10-second windows, with UIC limits marked by dotted lines at 0.5 kPa, 0.8 kPa, and 1.0 kPa respectively. A dashed vertical line marks τmin = 12.0 seconds, where all criteria are met. The pressure change decreases as the sealing time constant increases, with the 1-second window showing the highest pressure change and the 10-second window the lowest. All values are approximated.Interior comfort metrics for the baseline case versus rolling-stock sealing time constant τ. Dotted lines mark the UIC comfort limits, given in the legend for each window; the dashed vertical line marks τmin = 12.0 s, at which all three criteria are satisfied. Source: Author's own work