Respiratory emissions from fixed-top tanks can be estimated using the following equation:
LB=0.191×M(P/(100910-P)^0.68×D^1.73×H^0.51×Delta T^0.45×FP×C×KC
In formula: LB - Respiratory discharge from fixed roof tank (Kg/a);M - Molecular weight of vapor in storage tank;P - Real vapor pressure (Pa) in a large liquid state;D-tank diameter (m);H - Average vapor space height (m);Delta T - Mean temperature difference in one day (?)FP-coating factor (dimensionless) is taken between 1 and 1.5 according to the paint condition.C - Regulating factor for small diameter tanks (dimensionless);Tank with diameter between 0 and 9 m, C=1-0.0123 (D-9)^2;C=1 with diameter greater than 9m;KC-product factor (crude oil KC 0.65, other organic liquids 1.0)
