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1 Prediction of electrical energy by photovoltaic devices in urban situations By. R.C. Ott July 2011.

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Presentation on theme: "1 Prediction of electrical energy by photovoltaic devices in urban situations By. R.C. Ott July 2011."— Presentation transcript:

1 1 Prediction of electrical energy by photovoltaic devices in urban situations By. R.C. Ott July 2011

2 2 General model to compute the electric output of your Solar panels

3 3 Find out your geographic location and sight to the celestial sphere Where you live

4 4 The maximum of solar irradiation is a fixed astronomical amount and is dependend of your geographical location. Not each place on Earth is convenient

5 5 Orientation of your solar panels (= angles α and β) are important for best performances How about your panel azimuth and inclination ? Detailed installation properties

6 6 Realize that usefull sunlight comes from any direction, but most quantity comes from DIRECT irradiation How much Solar radiadion ?

7 7 Your (urban) local sky line is mostly not a straight line.. Sky obstructions limits your solar energy capacity

8 8 An all sky fish-eye lens as equipment to measure your local sky-line

9 9 Or use a drone to optimize your your panel location if the roof is difficult to enter

10 10 This fish-eye lens can tell you more about your location

11 11 The fish-eye photo is equidistant processed by FESA

12 12 … and imported to Tabulae Solis (In this case, the trees reduce you Solar panel output capacity) Daily direct sun light over a total year

13 13 SOLAR PANEL CALENDAR ( REAL SKY ) DATE: TIME: 12:41:06 Alt = 0 m ; Time zone = 1:0 hour Daylight s.time Location: North 52°06'00" ; East 5°07'00" ; TL(AM2)/Month : 2,75 2,75 3,75 3,75 3,75 3,75 4,25 4,75 4,25 3,75 2,75 2,75 SOLAR PANEL MOUNT: Heading = 154°45' ; Inclination = 45°00' ; Yaw = 0°00' ; Alt. =6 Date Sun-rise Sun-set Hor.Irr. Inc.Irr. Energy :48 16:39 0,11 0,22 0, :46 16:48 0,13 0,28 0, :41 16:58 0,17 0,41 0, :33 17:10 0,20 0,47 0, :24 17:23 0,28 0,70 0, :12 17:35 0,37 0,84 0, :00 17:38 0,44 0,90 0, :46 17:39 0,54 1,01 0, :31 17:39 0,59 1,00 0, :15 17:40 0,64 0,99 0, :00 17:40 0,71 1,05 0, :43 17:39 0,87 1,19 0, :27 18:39 0,93 1,18 0, :11 18:39 1,14 1,35 0, :55 18:39 1,38 1,59 0, :39 18:39 1,48 1,62 0, :25 18:39 1,58 1,68 0, :12 18:39 1,65 1,64 0, :09 18:40 1,75 1,68 0, :07 18:41 1,94 1,83 0, :07 18:43 2,06 1,88 0, :06 18:45 2,06 1,81 0, :07 18:46 2,33 2,07 0,81 Date Sun-rise Sun-set Hor.Irr. Inc.Irr. Energy :08 18:48 2,24 1,94 0, :09 18:50 2,26 1,96 0, :10 18:51 2,39 2,10 0, :12 18:52 2,27 2,00 0, :14 18:53 2,19 1,93 0, :15 18:53 2,06 1,85 0, :17 18:52 1,95 1,80 0, :18 18:51 1,83 1,73 0, :18 18:49 1,73 1,67 0, :21 18:46 1,63 1,63 0, :33 18:43 1,57 1,65 0, :44 18:40 1,46 1,58 0, :55 18:36 1,39 1,63 0, :07 18:32 1,13 1,33 0, :18 18:27 0,93 1,15 0, :30 18:23 0,89 1,23 0, :42 18:19 0,77 1,15 0, :53 18:15 0,69 1,12 0, :05 18:12 0,61 1,09 0, :18 18:09 0,53 1,02 0, :30 17:07 0,44 0,94 0, :43 17:03 0,35 0,81 0, :56 16:51 0,26 0,60 0, :08 16:42 0,21 0,52 0, :19 16:35 0,18 0,43 0, :29 16:30 0,14 0,29 0, :38 16:27 0,12 0,25 0, :44 16:28 0,11 0,22 0, :48 16:31 0,11 0,21 0, Cum. irradiance on horizontal plane : 391,00 kWh/m² (1406,1 MJ/m²) Cum. irradiance on (inclinated) panel : 443,00 kWh/m² (1593,2 MJ/m²) Total expected energy by panels: 174,00 kWh (625,4 MJ) NOTES: Irradiation values in kWh/m².d, expected energy in kWh/d and all rising/setting times with with respect to the (inclinated) solar panel surface Example of TS data output file to examine your optimal installation and (yearly) capacity prognosis

14 14 APPLICATIONS ASTRONOMASTRONOM : Astronomical (solar) data TABUSOLTABUSOL: Computing solar panel energy production FESAFESA: Measure and compute your local horizon R.C.Ott


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