Windpumps For Irrigation 1987

95 Pages·1987·3.99 MB·English

MICROFICHE
REFERIENCE
LIBRARY
A project of Volunteers in Asia

By: H.J. van Dijk and P.D. Goedhar?

Pub!&~ecf by:

Available from:

Consultancy Setvices Wind Energy Developing Countries
P.O. Box 85
3800 AB Amersfoort
The Netheriands

Consu!tancy Services Wind Energy Developing Countries
P.0. [33x 85
38OC, AB Amersfoort
The Nasherlands

Reproduced with permission.

Reproduction of this microfiche dosume x in any form is subject to the same
restrictions as those of the original document.

“High
tech is living in the nineteenth centuv, the pre-management
world.

They believe that people pay for technology.

They have a romance with technology.

But people don’t pay for technology: they pay for what they get out of technology.”

PETER F. DRUCKER,

quoted in: “The Frontien of Management’:
1987,

1.1
The history of windpumps in Crete and
13
Sao Vkente ______ - -.. ----.-
-.*..-..

1.1.1

1.1.2

12

_._-.--

1.2.1

1.2.2

--

1.2.3

2

2.1

2.1.1

2.1.2

2.1.3

2.1.4

2.1.5

2.1.6

22

2.2.1

22.2

2.2.3

22.4

22.5

2.2.6

2.2.7

23
x-_-

Lassithi, Crete
13

Sao Vicente
15

Key factors of the viability of windpumps
in diient
farmingsystems
17
_--...
-..-..---.
--
---.-
..-.
-......-

General aspects
17

The introduction of irrigation with wind-
pumps into rain-fed farming systems
18

The introduction of windpumps
in irrigated
farming systems
19

~fe~e~f types uf wifi~pmfps
ad their chrarferisfics

lopes of windyum_pi
20
__---

Tradihonal low-cost windpumps
20

Classic multi-blade windpumps
21

Recently developed windpumps
21

A comparison of three types of windpumps
23

Wind generators in combination
with
electric pumps

Wind systems with longdistance
transmission

Windpump characteristics

Rotor area and output of a *windpump

Wind speeds used tar design purposes

The details of the rotor

The tower height

ihe pump

Control and safety system

Transmission

Maintenance and repair
--.-_~._
----_---. _ ___.-_ .---..~~~
_~ .___

23

24

.~~~
25

25

27

28

29

30

33

33

35

3

3.1
-_----

3.1.1

3.1.2

3.1.3

3.1.4

32 -_-

3.3

n3 an3 wafer nuaitidii&ify

The wind re_gime
36
----.lt-.--_ __--.
__ _- . ..-- .-...
- . . ..-._
-.-- .-_

Data requirements
36

Mean wind speeds
36

Data accuracy
36

Wind data measuring equipment
37

AnaBis of wind data
39
--
---
---_
--

Site evaluation with respect to wind
--sped
42
.-

3.4
Availabil&of
water
44
I_-~

3.4.1
Surface water
44

3.4.2
Ground water
44

3.4.3
Well yield
44

3.4.4
Total pumping heao
45

3.4.5
Water quality
45

3.5
Final comments
45

4
Zhe cumman~ area of a