Handbook of Civil Engineering Calculations

FIGURE 3. Approximate relative impeller shapes and efficiency variations for various specif- ic speeds of centrifugal pumps. (Wo ...

TABLE 1. Pump Types Listed by Specific Speed* Specific speed range Type of pump Below 2,000 Volute, diffuser 2,000-5,000 Turbine ...

ments. This procedure is the work of R. P. Horwitz, Hydrodynamics Division, Peerless Pump, FMC Corporation, as reported in Power ...

pump? A swing check valve is used on the pump suction line and a gate valve on the dis- charge line. Calculation Procedure: Ske ...

TABLE 3. Resistance of Fittings and Valves (length of straight pipe giving equivalent resistance) Swing check, open ft m 40 12.2 ...

FIGURE 5. Resistance coefficients of pipe fittings. To convert to SI in the equation for h, v^2 would be measured in m/s and fee ...

The velocity v ft/s in a pipe = g/?m/2.448t/^2. For this pipe, v = 2000/[(2.448)(7.98)^2 )] = 12.82 ft/s (3.91 m/s). Then he = 0 ...

specific gravity of the liquid handled is 1.0. Then bhPi = (2000)(127)(1.0)/(3960)(0.70) = 91.6hp(68.4kW). The theoretical or hy ...

FIGURE 6. (a) Single-line diagrams for an industrial pipeline; (b) single-line diagram of a boiler-feed system. (Worthington Cor ...

Summary of Essential Data Required in Selection of Centrifugal Pumps Number of Units Required Nature of the Liquid to Be Pumped ...

FIGURE 8. Modern pump classes and types. pump would probably be best. Table 5 also shows the typical characteristics of various ...

Discharge flow Usual maximum suction lift, ft (m) Liquids handled Discharge pressure range Usual capacity range How increased he ...

FIGURE 9. Composite rating chart for a typical centrifugal pump. (Goulds Pumps, Inc.) Evaluate the pump chosen for the installa ...

Capacity, L/s FIGURE 10. Pump characteristics when impeller diameter is varied within the same casing. Related Calculations. Use ...

Capacity, L/s FIGURE 12. Capacity ranges of some rotary pumps. (Worthing Corpora- tion.) TABLE 7. Capacities of Typical Horizont ...

ANALYSIS OF PUMP AND SYSTEM CHARACTERISTIC CURVES Analyze a set of pump and system characteristic curves for the following condi ...

Capacity, L/s (b) FIGURE 14. (0) Significant friction loss and lift; (b) system-head curve superimposed on pump head-capacity cu ...

FIGURE 15. No lift; all friction head. (Peerless Pumps.) Compute the friction loss at other flow rates in a similar manner, and ...

Capacity, L/s FIGURE 17. Negative lift (gravity head). (Peerless Pumps.) is 50 ft (15.2 m). Flows up to 7200 gal/min (454.3 L/s) ...

ft m At 150 gal/min (9.5 L/s), friction loss in 200 ft (60.9 m) of 4-in (102-mm) pipe 5 1.52 At 150 gal/min (9.5 L/s), friction ...