SO­LAR TRACK­ERS

Power Watch India - - GREEN AHEAD -

Even though th­ese struc­tures are set to col­lect a high pro­por­tion of avail­able noon-time en­ergy, they still fail to gen­er­ate the same amount of en­ergy dur­ing early morn­ings or evenings, due to missal­ing­ment caused be­cause of the suns po­si­tion in re­la­tion to th­ese struc­tures. Thus, in or­der to get max­i­mum genar­ta­tion of a so­lar sys­tem, so­lar track­ing be­comes nec­es­sary so­lar tracker is a tech­nol­ogy that is de­signed to harness the max­i­mum amount of so­lar en­ergy from the Sun, by ori­ent­ing or align­ing the pay­load to­wards the sun. Apart from be­ing used to fo­cus the ar­rays of pho­to­voltaic (PV) so­lar cells di­rectly to the sun, they are also used for fo­cus­ing mir­rors, re­flec­tors or lenses that are used for con­cen­trated so­lar power units.

Through the day the sun keeps chang­ing its an­gle con­stantly. Th­ese track­ers help the PV ar­rays, mir­rors, re­flec­tors and other de­vices track the sun and min­i­mize the an­gle of in­ci­dence by en­sur­ing that the sun’s rays fall in a more or less per­pen­dic­u­lar an­gle.

Th­ese de­vices use en­ergy gen­er­ated from the so­lar power plant it­self, to con­tin­u­ally ori­ent the so­lar de­vice to­wards the sun, how­ever this en­ergy in­put is more than off­set by the in­creased ef­fi­ciency gained through the use of the tracker. Track­ers help in pro­duc­ing more en­ergy as the So­lar Pan­els or Mir­rors (CSP) will be fully ex­posed to sun­light. Tracker per­forms the tilt­ing and turn­ing op­er­a­tion by fol­low­ing the sun move­ments us­ing As­tro­log­i­cal Pre­dic­tions. The track­ing sys­tem helps in col­lect­ing en­ergy from the sun for the long­est pe­riod of the day en­sur­ing the most ac­cu­rate align­ment to the sun, which shifts with the sea­son.

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