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Published byPoppy Wood Modified over 9 years ago
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Prepared by: Scott Anvick Marc Fontana Gary Yee Christy Woo Ashok Khaturia Chris Doan Ralph Clouden James Pilkington 1 Cheeseman ESA ESCI 63 Updated PV Design – Layout/Design
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Proposed System – Roof Mounted Grid Tied 32” 61” Array length ~130” (10’ 10”) ~110” (9’ 2””) Roof facing west but panels tilted up to south Use Tilt Up Kit to allow seasonal panel angle tilt adjustment 12 panels – 3 rows of 4 panels each Rows separated by ~ 110” to avoid shadow cast by the front row Room for students to walk between rows and access electrical connections underneath 61” 385” (32’1”) SOUTH WEST 2 SkyLights Safety Rail ~4’ ~3’
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3 Mechanical Design De Anza College: latitude = 37.3º, Tilt correction = +/- 15º To capture the most solar energy in each season, panel tilt angle should be adjusted by students seasonally. Spring and Fall Tilt Angle = 37.3º (not shown) Due South 52.3º 61” Height = 61” x sin52.3º = 48.3” 22.3º Winter Tilt Angle Summer Tilt Angle Height = 61” x sin22.3º = 23.1”
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4 PV Safety Rail Clearance Calculation 10 Degrees Tilt for Roof 10.7” Worst Case PV Encroachment into Walk Way Safety Rail at 42” Tall 3’ Walk Way PV Panel ~ 61” x 32”
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