Condensate Drain Pipe Size
Drain lines containing no flash steam.
Condensate drain pipe size. The condensate pipe sizing chart figure 14 3 5 can be used to size any type of condensate line including. When sizing condensate return lines in steam distribution system remember that the maximum condensate flow is achieved during plant start up when pipes and equipment are heated up. Works around acceptable flash steam velocities of 15 20 m s according to the pipe size and the proportion of flash steam formed. Lines consisting of two phase flow such as trap discharge lines which are selected according to the pressures either side of the trap.
Condensate waste and drain line size shall be not less than 3 4 inch 19 mm internal diameter and shall not decrease in size from the drain pan connection to the place of condensate disposal. Drain sizing imc 307 2 2 tells us that an a c condensate drain inside diameter should not be smaller than 3 4 and should not be smaller than the drain pan outlet diameter. Where the drain pipes from more than one. The minimum size for the overflow pipe is 21 5mm and needs to be made from a non metallic material for allowing a reasonable flow of water waste.
The chart figure 14 3 5.