Fig. 465.
USEFUL DATA
RELATING TO THE SIZES AND CAPACITIES OF PUMPING MILLS.
Table I.
| Size of Pumping Mill | 6 | 8 | 9 | 10 | 12 | 14 | 16 | 20 |
|---|---|---|---|---|---|---|---|---|
| No. Gals. water raised 1 ft. hourly, 15-mile wind | 10,000 | 20,000 | 24,000 | 35,000 | 68,000 | 110,000 | 160,000 | 300,000 |
Table II.
| Average wind velocity, miles per hour | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Co-efficient | 16 | 8 | 5 | 3 | 2 | 1.4 | 1. | .85 | .70 | .60 | .54 | .50 |
Table III.
| Gallons hourly | 35 | 170 | 220 | 260 | 300 | 360 | 420 |
|---|---|---|---|---|---|---|---|
| Cylinder, diam. in. | 2 | 21⁄4 | 21⁄2 | 23⁄4 | 3 | 31⁄4 | 31⁄2 |
| Discharge pipe, diam. in. | 11⁄2 | 11⁄4 | 11⁄4 | 11⁄2 | 11⁄2 | 2 | 2 |
| Gallons hourly | 550 | 850 | 1200 | 2200 | 3400 | 5000 | |
| Cylinder, diam. in. | 4 | 5 | 6 | 8 | 10 | 12 | |
| Discharge pipe, diam. in. | 2 | 21⁄2 | 21⁄2 | 31⁄2 | 4 | 5 | |