Solar Water Pumping System
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If you need to supply water beyond reach of power lines, then solar power
can solve the problem. - Photovoltaic powered pumps provide a welcome alternative to fuel burning
engines, windmills and hand pumps.
Thousands of solar pumps are working throughout the world. They produce best during sunny weather, when the need for water is greatest. Photovoltaic (PV) panels produce electricity from sunlight using silicon cells, with no moving parts. They have been mass produced since 1980. They are so reliable that most manufacturers give a 10 year warranty, and a life expectancy beyond 20 years. They work well in cold or hot weather. Solar water pumps are specially designed to utili - DC electric power from photovoltaic panels. They must work during low light conditions at reduced power, without stalling or overheating. Low volume, pumps use positive displacement (volumetric) mechanisms which seal water in cavities and force it upward. Lift capacity is maintained even while pumping slowly. These mechanisms include diaphragm, vane and piston pumps. These differ from a conventional centrifugal pump that needs to spin fast to work efficiently. Centrifugal pumps are used where higher volumes are required. A surface pump is one that is mounted at ground level. A submersible pump is one that is lowered into the water. Most deep wells use submersible pumps. A pump controller (current booster) is an electronic device used with most solar pumps. It acts like an automatic transmission, helping the pump to stan and not to stall in weak sunlight. A solar tracker may be used to tilt the PV array as the sun moves accross the sky. This increases daily energy gain by as much as 55%. With more hours of peak sun, a smaller pump and power system may be used, thus reducing overall cost. Tracking works best in clear sunny weather. It is less effective in cloudy climates and on short winter days. Storage is important. Three to ten days storage may be required, depending on climate and water usage. Most systems use water storage rather than batteries, for simplicity and economy. A float switch can turn the pump off when the water tank fills to prevent overflow. Compared with windmills, solar pumps are less expensive and much easier to install and maintain. They provide a more consistent supply of water. They can be installed in valleys and wooded areas where wind exposure is poor. A PV array may be placed some distance away from the pump itself, even several hundred feet (100 m) away. Livestock Watering - Cattle ranchers in the Americas, Australia and Southern Africa are enthusiastic solar pump users. Their water sources are scattered over vast rangeland where power lines are few, and costs of transport and maintenance are high. Some ranches use solar pumps to distribute water through several miles (over 5 km) of pipelines. Others use portanle systems, moving them from one water source to another. |
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Earth 4 Energy  Visit Earth4Energy.com 
Rating: 9.7/10
Testimonials About The Earth 4 Energy Product Reviews: " Feedback & Testimonials #1 Hi Michael, I must say that you have really done a great job with your manual. I created my first power generating windmill over the weekend! I am actually writing to your right now on my laptop which is being powered by my windmill!! I'm going to add some extra batteries this weekend so that it lasts longer. By the way, I managed to pickup 4 batteries for free like you told me ;) Thanks buddy Kim Saunders Hi Michael, How are you? I have attached a picture of my latest solar panel. It's an 80 watt panel and I have used an alloy frame. It took me a couple of weekends to make and I am really happy with the results. I also put my laptop in front of the panel with the earth4energy web site on it for you. :) Let me know what you think! Best, Frank B. Hi Michael, I really enjoyed watching the videos about joining the solar cells. Very simple to follow. Good job! Thank you, Adam Sands, California Hi Michael, Thanks for the detailed guide. I made my first windmill on the weekend and I am just letting you know its going great! I could not have done it without your detailed diagrams. All I need to do now is to paint the end of the blades like the one on your web site and fix it properly to my roof. I am actually going to make a few of these so I can eliminate my power bill completely! Thanks again, Mark Monarsh, Aus " |
 1st Place do it yourself Solar Power |
Earth 4 Energy Review Highlights:
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Home Made Energy  Visit HomeMadeEnergy.org 
Rating: 9.3/10
Testimonials About The Home Made Energy Product Reviews: " I'm so glad I tried your system. I made my first solar panel this weekend and I wanted to let you know it's awesome. With your diagrams work was a breeze. Only one panel saves me a big chunk of electricity. Next weekend I'll do another one. Most likely with 2 or 3 of these I will be able to eliminate my electric bill for good. Thank you very much, Terry Rains, Michigan" "Hi Bill, Thanks for your step-by-step guide. Using the HomeMadeEnergy guide me and my son have built our own wind mill. We couldn't believe our eyes how easy it is to make your own energy. Now, after 3 wind mills, we're completely using our own energy for our home. And it's nice to see how you credit the electric company. Thanks again for providing this to us, Jason Hutto, Nevada " |
 2nd Place Renewable Energy |
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