水 supply fixture units (wsfu) と配管選定

水 supply fixture unit values, 配管選定 for cold と hot 水 distribution.

watersupplyfixtureunits計算機

Overview

Engineering reference data for Water Supply Fixture Units (WSFU) and Pipe Sizing in sanitary drainage.

$Q = \frac{1}{n} A R_h^{2/3} S^{1/2}$

Open channel flow.

$S = \frac{\Delta h}{L}$

Hydraulic gradient.