unwin_w - Unwin Formula W

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3.7.2 unwin_w - Unwin Formula $W$

w = unwin_w(p,l,d,v)

Calculates the pressure drop of a steam pipe using the Unwin formula for the volume flow given a pressure drop.

Arguments

p: Pressure drop $∆P$ ( $kPa$ ).
l: Pipe length ( $m$ ).
d: Pipe diameter ( $m$ ).
v: Specific volume ( $m3/kg$ ).

Returns Steam flow rate ( $kg/h$ ).

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