Handbook of Civil Engineering Calculations

Flow rate,gal/min(L/s) FIGURE 11. System-head curves without recirculation flow. (Chemical Engineering.) Related Calculations. S ...

FIGURE 13. System-head curves with recirculation flow. (Chemical Engineering.) the head-capacity characteristic curves of the pu ...

Choose the most energy-efficient pump Use Fig. 14, entering at the bottom at 1000 gal/min (3800 L/min) and projecting vertical- ...

TABLE 4. Type of Pump for Highest Energy Efficiency* Area 1: Single-stage, 3500 r/min Area 2: Single-stage, 1750 r/min or lower ...

eliminates half of the pumps that might be selected and results in oversized pumps op- erating at lower efficiency. This procedu ...

The actual power output from a hydro station is P = HQwe/550, where P = horse- power output; H = head across turbine, ft; Q = wa ...

standard designs that will match any site needs in regard to head, capacity, and excavation restrictions. The Francis turbine, F ...

"CLEAN" ENERGY FROM SMALL-SCALE HYDRO SITES A newly discovered hydro site provides a potential head of 65 ft (20 m). An output o ...

TABLE 5. Performance Characteristics of Common Hydroturbines Capacity range Operating head range % of design capacity 30-11510-1 ...

To reduce capital cost, most site developers choose standard-design hydroturbines. With essentially every high-head site develop ...

steel material costs are relatively low compared to labor costs. And stainless steel has proven most cost-effective for hydrotur ...

FIGURE 19. Closed-cycle system gassifies refrigerant in boiler to drive Rankine-cycle turbine for pumping water. (Product Engine ...

Predict the probable operating mode of this system In June, during the longest day of the year, the system will deliver up to 5 ...

SECTION 7 WATER-SUPPLY AND STORM-WATER SYSTEM DESIGN WATER-WELL ANALYSIS Determining the Drawdown for Gravity Water-Supply Well ...

Calculation Procedure: Determine the key parameters of the well Figure 1 shows a typical gravity well and the parameters associ ...

FIGURE 2. Relation between groundwater table and ground surface. (Babbitt, Doland and Cleasby.) results obtained are most nearly ...

FIGURE 4. Demand curve for a typical week for a city of 100,000 population. (Babbitt, Doland, and Cleasby.) This procedure is th ...

(10X290) (50)(250) (^15) °-lo glo(150C/0.5) ^ (^5) °°~ lo glo(500C/0.5) Solving for C and K we have C=0.21 and JT- (5My*210) -0. ...

aquifers is not the same, the specific capacities of wells in different aquifers are not al- ways comparable. It is possible, wi ...

FIGURE 6. Values of Cx for use in calculations of well performance. (Babbitt, Doland, and Cleasby.) ^o~(^-^-l-7f)loglo^ Compute ...