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“Solar power is the perfect solution for irrigation.” When Tom Peters began investigat- ing irrigation solutions for Deere Run Farms’ vineyards, he first considered having the local power company route a power installation to the site. The cost of this was estimated at US$ 200,000 for the installation, plus a US$ 1,000 monthly service and a rate of 15 cents per kilowatt-hour. These costs being considered, alternatives such as AC- powered pumps with diesel generators, windmills, or solar-powered pumping systems needed to be considered. Mr. Peters calculated the costs and ben- efits of these alternatives. The expense of fuel and associated labor for refuel- ing was a big negative when consider- ing diesel generators, whereas wind- mills produce too low a volume for watering the acreage required. The so- lution had to be either grid-tied or so- lar-power, the initial costs of which were similar. In considering the pros and cons of each, it was apparent that solar-powered pumping systems were the best choice for being cost-effective, low-maintenance, reliable and long- lasting. When comparing the various so- lar-powered pumps on the market, LORENTZ stood out above their com- petitors. Mr. Peters found that LORENTZ offers a much wider range of pump- ing systems to satisfy the high-lift and high-volume requirements of the vine- yard. He also favored the LORENTZ de- sign, having the electronics available at the surface (rather than attached to the pump in the well), to allow visual in- spection of the electronics if ever need- ed. Other benefits of the LORENTZ sys- tem include the adjustable flow rate, brushless motor design, and ease of in- stallation. In comparison, Mr. Peters found that the AC pumps he would otherwise need were not only more expensive than LORENTZ pumps, but more and/or larger AC pumps would have been re- quired to match the production and lift of the LORENTZ systems. Even though Sun. Water. Life. – Tom Peters, Deere Run Farms 120 105 90 75 60 45 30 15 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 60m 75m 90m 105 m 120 m 135 m BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de Errors excepted and possible alterations without prior notice. Power Input [kW] Flow Rate [liters/min] v111109PDF Image | Solar-powered Water Pumping for Vineyard Irrigation
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