POLDAW 3.5m 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

100,700 litres

186,600 litres

272,500 litres

3

67,100

121,600

176,100

5

42,200

81,700

121,200

10

21,400

43,600

65,800

20

10,700

21,600

32,500

30

6,600

11,400

16,200

40

5,300

10,200

15,000

50

4,200

7,800

11,300

60

3,400

7,000

10,500

70

2,800

5,300

7,700

90

1,900

3,100

4,300