Can too street lamp pictures Yang street lamp design thought

Solar street light component type selection design requirements: in the Beijing area, the load input voltage 24 v power 34. 5 w, work 8 hours a day. 5 h, to guarantee the continuous rainy days 7 days. Annual average radiation 107 (1) in the Beijing area in recent 20 years. 7 kcal/cm2, the simple calculation in the Beijing area peak day



solar street light component type selection design requirements:

in the Beijing area, the load input voltage 24 v power 34. 5 w, work 8 hours a day. 5 h, to guarantee the continuous rainy days 7 days.

(1) almost 20 years in the Beijing area radiation is 107 per year. 7 kcal/cm2, the simple calculation peak sunshine time is about 3 in the Beijing area. 424h；

2 load day power consumption = 12. 2 ah

(3) the required total solar charging current = 1. 05× 12. 2× （ 20 + 7) Price & divi DE solar street lamps; 20÷ （ 3. 424× 0. 85). = 5. 9 a

here, the design of the shortest days between two consecutive rainy days for 20 days, 1. 05 for solar cell component system comprehensive loss coefficient, 0. 85 for battery charging efficiency.

(4) solar street light component on the number of minimum total power = 17. 2× 5. 9 =

choose peak output power of 102 w, 110 wp, single piece of 55 wp standard cell components, should be able to guarantee in most cases a year of street lamp system normal operation.