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1, solar cell component selection
Design requirements: Beijing area, load input voltage 24V power consumption 34.5W, working hours 8.5h per day, to ensure continuous rainy days 7 days.
(1) The average annual radiation dose in Beijing in the past 20 years is 107.7Kcal/cm2, and the peak sunshine hours in Beijing are about 3.424h.
(2) Daily load power consumption = 12.2AH
(3) Total charging current of the required solar modules = 1.05 × 12.2 × (20 + 7) ÷ 20 ÷ (3.424 × 0.85) = 5.9A
Here, the shortest design period between two consecutive rainy days is 20 days, 1.05 is the integrated loss factor of the solar cell module system, and 0.85 is the battery charging efficiency.
(4) Minimum total power of solar modules = 17.2 × 5.9 = 102W
The standard battery pack with a peak output power of 110Wp and a single 55Wp should be used to ensure the normal operation of the streetlight system in most of the year.
The above content is provided by WOSEN. WOSEN is a professional manufacturer and supplier of Led Flood Light, Led Street Light, Led Solar Light, etc. For more information, please visit https://www.wosenled.com/ or contact admin@wosenled.com or WhatsApp +86-13425434349
August 11, 2023
August 11, 2023
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August 11, 2023
August 11, 2023
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