在對過濾器選型時，阻力損失是必須要確定的的數據，下面我教大家如何計算Y型過濾器、T型過濾器、籃式過濾器阻力損失(注：T型過濾器參(can)照Y型(xing)等管件類(lei)過(guo)濾器，籃式(shi)過(guo)濾器參(can)照筒殼類(lei)過(guo)濾器計算)。

Filter resistance loss

ΔP－阻力損失，Pa

ΔP－Resistance loss，Pa

λ－摩擦(ca)系數，無因次

λ－Friction coefficient,Dimensionless

Re－雷(lei)諾數，Re=(ω·dn)/u，無因(yin)次

Re－Reynolds number,Re=(ω·dn)/u,Dimensionless

ω－流體速度，m/s

ω－Fluid velocity,m/s

ρ－流(liu)體密(mi)度(du)，kg/m3

ρ－Fluid density,kg/m3

μ－動力粘(zhan)度，kg/m·s

μ－Dynamic viscosity,kg/m·s

u－運動粘(zhan)度(du)u=μ/ρ，m2/s

u－movement viscosity u=μ/ρ,m2/s

L－當(dang)量(liang)直管(guan)(guan)段長度，m，類(lei)管(guan)(guan)件(jian)過濾(lv)器查閱下(xia)表“類(lei)管(guan)(guan)件(jian)過濾(lv)器公稱(cheng)直徑(jing)與當(dang)量(liang)直管(guan)(guan)段長度關系”

L－Equivalent ascending pipe segment size,m, Kind of fitting filter consult next table "Kind of fitting filter nominal diameter and equivalent ascending pipe segment size relations"

D－類(lei)管(guan)件過(guo)濾(lv)器內徑，m

D－type filter tube diameter,m

dn－當(dang)量直(zhi)徑m，類(lei)管件過濾(lv)器取(qu)管件內徑"D"，筒殼式(shi)過濾(lv)器取(qu)“4s/c”

dn－Equivalent diameter m ,The kind of fitting filter take the fitting inside diameter "D",The tube shell type filter take"4s/c"

S－液體流通面積，m2

S－Liquid flow area,m2

C－液體濕(shi)周(zhou)（濕(shi)潤周(zhou)長），

C＝2X（筒體(ti)內徑(jing)＋筒體(ti)高度）m C＝2X（筒體(ti)內徑(jing)＋筒體(ti)高度）m

C－Liquid wetted perimeter(Moist perimeter)

C＝2X（cylinder diameter + cylinder height）m

ξ -入口阻(zu)力系數，取1.1

ξ - Entrance friction coefficient, Taking1.1

ξ -出(chu)口阻力(li)系數，取0.5

ξ -Export friction coefficient, Taking0.5

類管件(jian)過濾器公稱直徑與當(dang)量直管段長度(du)關系

Category filter tube nominal diameter and length of straight pipe equivalent relations

a.對于“Y型”等(deng)管(guan)件類過濾器，按下式(shi)計算

a.for the "Y-type" , such as tube-type filter, determined using the following equation:

b.對(dui)于(yu)“筒殼”類過濾(lv)器，按下式計算

b.for the "drum shell" type filters, determined using the following equation: