﻿ Y-strainer Rresistance Loss Calculation_Made in China Strainers

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# Y-strainer Rresistance Loss Calculation

 ΔP－－resistance loss，Pa λ－－friction coefficient, dimensionless Re－reynolds number，Re=(ω·dn)/u，dimensionless ω－flow speed，m/s ρ－flow density，kg/m μ－power viscosity，kg/m·s u－movement viscosity u=μ/ρ，m/s L－Equivalent straight pipe length, m, pipe strainer access in the following table "category pipe strainer nominal diameter and straight pipe equivalent length relationship" D－internal diameter of category pipe strainer，m dn－Equivalent diameter, m, category pipe strainers take pipe internal diameter "D", tube shell strainers take '4 s / c ' S－Liquid flow area，m C－Liquid Wet perimeter (wet perimeter), C = 2X (cylinder inner diameter + cylinder height) m ξ- 1.1 inlet resistance coefficient, take 1.1 ξ-0.5 outlet resistance coefficient, take 0.5

The relationship between Strainer DN and the length of equivalent straight pipe

 DN 50 80 100 150 200 equivalent straight pipe length L (×10mm) 25∽30 18∽23 15∽20 22∽38 32∽40 DN 250 300 350 400 450 equivalent straight pipe length L (×10mm) 27∽43 58∽65 48∽85 60∽95 62∽98

 1）For the 'Y-type' and other Pipe Fittings category strainers, calculated by the formula 2）For the 'tube-shell' type strainer, calculated by the formula 