Hydraulic ram pumps and Sling Pumps

T.E.MANNING, NETHERLANDS, ADVANCED SOLAR AND HAND PUMPING TECHNOLOGIES FOR DEVELOPING COUNTRIESeffectively on low power.iThe pump is made from stainless steel, with highly resistant parts, but it is not specifically designed foruse with salt water or waters containing particularly aggressive elements, which may shorten the durationof some parts. If in doubt, consult your supplier.FEATURESUses power of one light-bulbPositive displacementPumps from 200m (600 ft)Capacity up to 11m3 per daySubmergence to 50m (150ft)Air-cooled motor can run dryMade from stainless steelUp to 60% subsystem efficiencyEasy to installFits in a 4 inch well casingTolerates sand and aggressive waterNo trackers or batteries neededHIGHLY COST EFFECTIVESolar pumping systemsPhotovoltaic (PV) panels generate electricity directly from the sun’s light, with no moving parts. Theymay be mounted on a fixed structure or on a solar tracker which follows the sun to extend dailyoperation. The solar array may be mounted some distance away from the water source. Most systems aredesigned to pump only during the daytime to fill a storage tank or pond. This is usally more economicaland reliable than using batteries. Solar Spring systems use an electronics device to connect thephotovoltaic (PV) panels directly with the pump motor, eliminating the need for inverters and/or batterystorage, but they also work with batteries and with wind generators.How is the Solar Spring pump technologypossible?http://www.flowman.nl/solprese.htm (2 of 4) [1/13/2005 12:46:59 PM]