Branches In Openended Systems

Figure 4 illustrates a pump supplying three branch lines that are open-ended and terminate at different elevations. Figure 5 shows the system total-head curves for each branch

0 RATE OF FLOW

FIGURE 3 System-head curves for pump and branch line shown in Figure 1 with different combinations of open valves

FIGURE 3 System-head curves for pump and branch line shown in Figure 1 with different combinations of open valves

line and main supply line considered independently of each other. These curves are constructed by starting at elevation heads ZA, ZB, ZC and ZD at zero flow. To each of these heads is added the frictional resistances in each line for several flow rates. Frictional losses from the suction tank to junction 1 are included in curve D. Curves A, B, C, and D therefore represent the variation in system resistance in feet (meters) versus flow through each branch and supply line. Note that ZD is negative because in line D there is a decrease in elevation to point 1.

Survival Treasure

Survival Treasure

This is a collection of 3 guides all about survival. Within this collection you find the following titles: Outdoor Survival Skills, Survival Basics and The Wilderness Survival Guide.

Get My Free Ebook


Post a comment