9 The initial pressure loss of the calculation formula Calculation Zhijin net can be estimated by the following formula. Initial pressure drop of wire mesh is calculated by the following equation. ⊿P＝α×μ×ｕ＋β×ρ×ｕ2 ⊿P： Pressure loss [Pa] Pressure drop u: Flow speed [m/s] (= flow rate [l/min] / filter area [cm2] x 6) Velocity α: Viscosity resistance coefficient [m-1] Viscous resistance factor β: Inertial resistance factor [-] Inertial resistance factor μ: Viscosity [Pa s] Viscosity ρ: Density [kg/m3] α and β in Density equations are resistance coefficients, as shown in the following table. α and β are resistance coefficients. See the table below. Weave wire diameter (mm) Wire diameter mesh Mesh count α (m-1) β (−) Flat-weave Plain 0.4 20 9.41×104 0.92 0.21 40 1.52×105 1.01 0.6 0.6 0.6 0.6 0.6/0 0 0 0 0 0 0 0 0 0 0 0 0 0 5.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ※The data shown in the table and graph are examples of experimental results. Values in these graphs and tables were obtained from our experimental results. Other types of weave Reversed plain dutch Reversed plain dutch Reversed twilled dutch Five-heddle twilled cedar yaori, rope weaving, mat weaving, etc. Herringbone, Basket weave, etc.
RkJQdWJsaXNoZXIy NDY3NTA=