When calculating water pressure drop in chilled water pipisystem (closed circuit) we always use Hazen Williams equation as follow:-
h100ft = 0.2083 x (100 / c)^1.852 x q^1.852 / dh^4.8655
where
h100ft = friction head loss in feet of water per 100 feet of pipe (ft.w/100 ft pipe)
c =...
