POLDAW 1.8m WINDPUMP

(Approximate outputs in litres per 24 hours)

Total pumping head in metres

Wind-speed in metres/second (miles per hour)

3 m/s (6¾ mph)

4 m/s (9 mph)

5 m/s (11¼ mph)

2

24,300 litres

41,600 litres

58,800 litres

3

17,600

34,900

52,200

5

10,700

19,100

27,600

8

5,800

9,600

13,300

10

5,200

8,900

12,700

15

3,500

6,200

9,000

20

2,600

4,500

6,400

25

1,600

2,600

3,500

30

1,500

2,400

3,400

40

1,000

1,900

2,900