6.計算公式中的符號說明:
6. The symbol description of calculation formula:
E——微孔過濾介質的抗壓彈性模量(MPa)
E - compression elastic modulus of microporous filter media (MPa)
E0——與微孔過濾介質同一原料的熱壓的無孔體的彈性模量(MPa)
E0 - elastic modulus of hot-press and non-porous body of the same raw materials as microporous filter medium (MPa)
σ拉、σ壓——微孔過濾介質的抗拉與抗壓強度(MPa)
σt, σc - tensile and compressive strength of microporous filter media (MPa)
σ沖——微孔過濾介質的抗衝擊強度(MPa·cm)
σi - impact strength of microporous filter medium (MPa•cm)
σ0拉、σ0壓——與微孔過濾介質同一原料的熱壓無孔體的抗拉與抗壓強度(MPa)
σ0t, σ0c - tensile and compressive strength of hot-press and non-porous body of the same raw materials as microporous filter medium (MPa)
σ0沖——與微孔過濾介質同一原料的熱壓無孔體的抗衝擊強度(MPa·cm)
σ0i - impact strength of hot-press and non-porous body of the same raw materials as microporous filter medium (MPa•cm)
dm——微孔過濾介質的平均毛細孔徑(μm)
dm - average pore diameter of microporous filter medium (μm)
ds——被過濾的固體微粒的最小粒徑(μm)
ds - minimum particle size of solid particles filtered (μm)
△L——微孔過濾介質的厚度(mm)
△L - thickness of microporous filter media (mm)
μ——濾液粘度(Pa·s)
μ - filtrate viscosity (Pa•s)
u——濾液通過微孔過濾介質表面的平均線速度(m/h)
u - average linear velocity of filtrate through the surface of the microporous filter medium (m/h)
t——累計過濾時間(s)
t - total filtration time (s)
W——平均過濾速度(m3/m2·s)
W - average filtration velocity (m3/m2•s)
Rm——微孔過濾介質的阻力(1/m)
Rm - resistance of microporous filter medium (1/m)
α——濾餅的平均比阻(1/m2)
α - average specific resistance of cake (1/m2)
△P——過濾壓差(Pa×105)
△P - filtration pressure drop(Pa×105)
C——每單位濾液體積所具有的濾餅體積(—)
C - cake volume per unit filtrate volume (1)
α0、λ、s——與濾餅的過濾性能有關的係數。
α0, λ, s – coefficients related with the cake filtration performance.
A、B——與過濾精度有關的係數、取決於被過濾顆粒與微孔過濾介質界面的相互作用。
A, B - coefficients which is related to filtration accuracy, depending on the interactions of filtered particles and the interface of microporous filter medium.
W0——過濾起動瞬間的過濾速度(m3/m2·s)
W0 - filtration rate at filtration-starting instant (m3/m2•s)
n,K——係數,取決於固體微粒對粒孔過濾介質的毛細孔的堵塞機理。
n,K - coefficient, depending on the clogging mechanism which the solid particles act on the pores of filter media.