RP-01638

More documents

Recommendations

Info

manual pumps that were manufactured in industrialized countries. The project established the reliability and efficiency of the Waterloo design compared with the existing technology. The Waterloo pump differs from others in that it has been designed specifically for fabrication in developing countries, utilizing existing locally available resources. In 1978, after the laboratory testing, research projects were set up in two countries in Africa and four in Asia to field test the pump under various environmental conditions and levels of technical sophistication with different user groups. The countries involved in this phase were Malaysia, the Philippines, Sri Lanka, and Thailand in Asia, and Ethiopia and Malawi in Africa. The Waterloo handpump has brought clean water to rural farnilies in Malaysia. 8
The primary objectives of these studies were to assess the Waterloo pump design in various field conditions for characteristics such as capacity for local manufacture, cost of manufacture, reliability and durability, maintenance capability at the village level, and technical performance. The basic piston and foot-valve design produced by the University of Waterloo was used by all the projects with some local modifications. The above-ground components were locally designed and produced in each country. In the Philippines, the Institute for Small-Scale Industries at the University of the Philippines carried out the research in collaboration with the National Institute of Science and Technology, the Department of Local Government and Community Development, Department of Health, and the Local Utilities and Water Works Agency. In Thailand, the Asian Institute of Technology conducted the research in cooperation with the Department of Health, the Department of Public Works, the Office of Accelerated Development, and the National Economic and Social Development Board. In Malaysia, the Faculty of Engineering at the University of Malaya conducted the research in collaboration with the Environmental Engineering Division of the Ministry of Health. In Sri Lanka, the Lanka Jathika Sarvodaya Shramadana Sangamaya (the Sarvodaya Movement), which is involved in grassroots community-development work, carried out the research. The research included an economic analysis of cost effectiveness compared with other handpumps being used in the region. It also involved assessing the potential for rural water-supply development, making projections on the percentage of rural households that could be served by piped water, and attempting to determine the future market demand for handpumps in the region. In August 1980, the mid-project meeting for the four Asian projects was held at the University of Malaya in Kuala Lumpur to review the projects' progress and establish common monitoring and measurement techniques. A unique method for accurately determining pump usage with a mechanical counting device, developed at the University of Malaya, was also incorporated into the field-testing program. This device made it possible to correlate measurements of wear with the distance the piston traveled or the amount the pump was used. The activities of the four projects in Asia have now been completed and the results are encouraging. Two workshops were therefore sponsored by IDRC in collaboration with the Faculty of Engineering of the University of Malaya from 16 to 19 August 1982 in Kuala Lumpur. For the first 2 days, the project leaders from the four Asian countries reviewed and discussed their results and assessed the overall technical and economic implications of their findings. During the last 2 days, a dissemination seminar was held to present the results to interested governmental and nongovernmental agencies from the region and to observers from various international agencies and private concerns. The status of handpump technology in the region was reviewed and new research priorities were identified. The PVC pump demonstrated during the field trials that it holds considerable potential for use at the village level. It can be made locally at reasonable cost and is easily repaired with locally fabricated parts. However, it must be realized that, as with any technology, there are limitations. If one is looking for a "magic," maintenance-free pump, then this technology is not the answer. The results of field trials indicate that, although the pump is durable, there are limitations that must be understood and respected or malfunctions will occur. Also, failure will occur if the well is improperly developed. More importantly, the outcome of this research has clearly demonstrated that inexpensive plastics can be used in handpump manufacture, making it possible to produce pumps and spare parts locally and to incorporate designs that are simple to understand and easy to maintain at an affordable cost. This volume deal primarily with handpump technology, but it must be remembered that the pump is more than just a convenient means of drawing water 9
Page 1 and 2: ARCHIV SHARP no. 1
Page 3 and 4: IDRC-204e Village Handpump Technolo
Page 5 and 6: Contents Preface ..................
Page 7 and 8: Preface Many factors are involved i
Page 9: Introduction The precise links betw
Page 13 and 14: Sri Lanka Pathirana Dharmadasa, lJp
Page 15 and 16: m O C O x 00 N .,y D+ O G+ CL C n Q
Page 17 and 18: 13 8 -6 7 9 10 A B C Fig. 4. (A) LI
Page 19 and 20: in the village can easily make a ne
Page 21 and 22: Table 2. Overview of performance da
Page 23 and 24: Thailand Pichai Nimityongskul and P
Page 25 and 26: L -' 0 inch 3 cm 8 A B Fig. 1. (A)
Page 27 and 28: The tensile strength of the PVC pip
Page 29 and 30: 0 4 A B OF inch 1 cm 4 10 01 1 inch
Page 31 and 32: water per 10-cm stroke, changes in
Page 33 and 34: Fig. 11. Below-ground components of
Page 35 and 36: Philippines Antonio Bravo This repo
Page 37 and 38: 2 Fig. 3. Modified version of above
Page 39 and 40: At a standard frequency of about 40
Page 41 and 42: Malaysia Goh Sing Yau The populatio
Page 43 and 44: AP. AP (FU + FD) (WW1 + WW2 + BP +
Page 45 and 46: Optimum Design It is difficult to s
Page 47 and 48: 10 4 1 A B Fig. 6. (A) Piston assem
Page 49 and 50: made from a 0.5-inch (1.27-cm) thic
Page 51 and 52: PK 006S2 312181 717181 60 1019181 0
Page 53 and 54: was found only in: (1) the top wood
Page 55 and 56: Overview of Technical Performance G
Page 57 and 58: Ln Country and model Pedestal Table
Page 59 and 60: Economic Analysis and Potential Mar
Page 61 and 62:
program is being curtailed by the l
Page 63 and 64:
cylinder: PVC is one-third the cost
Page 65 and 66:
about 50% of the cost of the existi
Page 67 and 68:
Table 7. Summary of important handp
Page 69 and 70:
Conclusions In an era of rapid deve
Page 71 and 72:
Malaya proposes to address this que
Page 73 and 74:
Participants ZAINUDDIN ARSHAD, Mini
show all

RP-01638

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?