Pressure Drop Theory    

Pressure drop-Insulation-Span: Physical properties and Theory



Pressure drop

Frictionless fluid flow

Bernoulli

Pressure drop of the viscous flow

Hydraulic diameter
Roughness

Straight Piping

Hagen, Poiseuille, Couette
Pressure drop of the straight pipe
Darcy-Weisbach
Moody

Bend 90°

Pressure drop in pipe bends
Resistance coefficient Bend 90°

Miscellaneous: fittings, filter, valves, flow meter, heat exchanger, etc.

Flow coefficient kv, cv
Flow coefficient kv for diverse fittings

Resistance coefficient (Friction Factor)
Resistance coefficient for diverse fittings

Pumps

Centrifugal pumps DIN EN ISO 2858
Speed adjustment of pumps

Insulation

Pipe insulation and heat losses

Thermal conductivity pipe material and insulation material
Check for dew formation on the surface
Wind strength and air speed

Wet cooling tower

Wet Bulb Temperature

Span

Span and Beam Theory
Steel Pipe Elastic modulus

Physical properties and Pipe

Physical properties of liquids and gases
Water hardness
Steel Pipe dimensions
Plastic pipe dimensions




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