Chapter Lessons Learned

As renewable energy technologies continue to evolve in terms of efficiency and cost reduction, more and more systems will be installed in many developing countries. Renewable systems are becoming even cheaper than conventional systems, especially for small to medium applications. Using wind and PV systems for village home systems (such as for solar home systems and battery charging) is cheaper than the traditional kerosene or car battery lighting systems. Similarly, use of renewable...

Installation Operation and Maintenance

To achieve system reliability and safety, good installation and O& M practices are required for solar and wind energy systems. Neglecting any of these aspects results in increased system lifetime costs and poor performance. Many problems during installation and operation can be avoided in the design stage. Raggedness and high reliability often go hand in hand with efficiency and are considerations of equal importance to cost. Simplifying the system's configuration and selecting quality...

Figures

Figure 2-1 PV-powered water pumping on a Colorado Figure 2-2 Schematic diagram of a village water supply powered by an electrical wind turbine with a typical water distribution Figure 3-1 Zone of disturbed Figure 4-1 Types of pump sets for different ranges of head and flow rates 21 Figure 4-2 Basic operating principles of positive displacement Figure 4-3 Schematic diagrams of the four main types of electric motors 25 Figure 5-1 Agricultural applications Livestock watering in Figure 5-2 Typical...

Chapter Selecting Power and Sizing Renewable Energy Water Pumping Technology

Ethiopia Water System Distribution

The most common renewable energy sources for water pumping applications are wind and solar. Wind energy can be harvested with either mechanical machines (windmills) or electrical machines (turbines). Solar energy can be directly converted into electricity for water pumping applications with either thermoelectricity or PV cells. However, thermoelectricity is not efficient and practical for pumping water. PV is the most promising and widely used technology available today, so we emphasize...

Chapter Introduction

Water is the primary source of life for mankind and one of the most basic necessities for rural development. The rural demand for water for crop irrigation and domestic water supplies is increasing. At the same time, rainfall is decreasing in many arid countries, so surface water is becoming scarce. Groundwater seems to be the only alternative to this dilemma, but the groundwater table is also decreasing, which makes traditional hand pumping and bucketing difficult. As these trends continue,...

Biblography Of Solar Water Pump

American Wind Energy Association AWEA news release January 7, 1999 . Argaw, N. In press. Renewable Energy Water Pumping Systems Handbook An Introduction to the Technology, Resource Assessment, Design, Economics, and External Impacts Evaluation. Golden, CO National Renewable Energy Laboratory. Argaw, N. 1996 . Evaluation of Photovoltaic Water Pumps and Estimation of Solar Energy Availability in Ethiopia. Ph.D. thesis. Tampere, Finland Tampere University of Technology. Argaw, N. 1995 . Optimum...