_ Inner Mongolia solar manufacturers point road street _ _ Inner Mongolia, Inner Mongolia, solar street light wind and solar lights solar street _ Inner Mongolia which led lamp manufacturers _ _ _ PV Inner Mongolia led_ Inner Mongolia where to buy street _ _ street where there sell Valley Optoelectronics Technology Co., Inner Mongolia more detailed calculation of multi-lamp configuration Valley photovoltaic solar street first calculate the current: eg: 12V battery system; 30W lamp 2, a total of 60 watts. Current = 60W ÷ 12V = 5A two: calculate the battery capacity needs: such as: street lighting cumulative time required for full load per night 7 hours (h); (eg open 8:00 pm, closed a road night at 11:30, the morning 4:30 to open two-way, closed the morning 5:30) need to meet five days of consecutive rainy days lighting needs. (5 days plus rainy days before the night lighting, count 6 days) Battery = 5A × 7h × (5 + 1) day = 5A × 42h = 210AH Furthermore, in order to prevent battery overcharge and over discharge, the battery is generally charged to about 90%; discharge of the remaining 20%. So 210AH only true standard application of about 70%. Three: the calculated peak demand panels (WP): Cumulative street lighting time is seven hours per night is required (h); ★: solar panels received daily average effective illumination time of 4.5 hours (h); at least relax the demand for solar panels 20% of the amount set aside. WP ÷ 17.4V = (5A × 7h × 120%) ÷ 4.5h WP ÷ 17.4V = 9.33 WP = 162 (W) ★: 4.5h daily illumination time for the Yangtze River area near sunshine factor. Multi Valley photovoltaic solar street performance: independent photovoltaic power generation system is a model, and this is just one aspect of the problem, even more serious is that it is a decrease in the amount of solar radiation with the growing season of the load. You can see from the above analysis, the annual winter solstice is the minimum amount of solar radiation, which is generating the least amount of solar modules, when the annual winter solstice is the shortest day, longest night, when the longest path lighting needs . Currently in the design of solar street everyone concerned that continued rainy-day lighting problem, in fact, this problem is still relatively good deal, just part of the growth capacity of the battery can be, if you want the path of the winter solstice lighting indicators meet the state standards requirements, unless the expense of spring, summer, autumn generation solar modules, no other way. In this case the efficiency of the system will be very low. There are a lot of people do not agree with the above ideas; the reason is very simple: the installation of solar lights, still working after normal before the winter solstice. It really so? In the solar cell power source efficiency is certainly the situation, the use of solar street lights, there are many factors that influence the effect: solar radiation intensity, rationality, the ambient temperature, the battery level of the old and new solar module tilt angle (old and new battery charging and power generation Efficiency can differ by more than 30%) and the like. In these conditions there is no certainty the effect of previously evaluated using solar lights are not correct. (1) "to light" does not mean you can reach the national standard CJJ45-2006. Urban path lighting design requirements of the standard path illumination. Some situations. The output power of the light source can vary with the battery voltage, the lower the voltage, the output power is smaller, the smaller the illuminance. LED light source for solar street light is particularly significant, and its characteristics are licensed to work in a very wide voltage category, but in this situation, the power source is very small, luminous flux drops. This is also one of many people react solar street lighting effect good reasons to use LED manufacturing. (2) charging a new battery, the power generation efficiency can reach 90%. The old battery in the power generation efficiency of 70% or less, the difference between the old and new can reach 20%, and the temperature on the efficiency of the battery is very large. Acceptance of our products, whether it is under what conditions is very worthy of discussion and concern. (3) light-emitting efficiency attenuate, especially LED. 8 m 40 watt solar street light 12V System Product parameters: pictures, price, product attributes, for reference, to prevail in kind, can be customized according to user needs, please contact us * Brand: * Multi-Valley photoelectric light types: high bright LED light 40W * Body Material: galvanized * Pole height: 8 m * Lamp: 40W * light board: 70WP * Lighting time: 6 hours * Battery: 65AH * System Operating voltage: DC 24V * Controller: Special solar lamps controller, light control + time control * Operating temperature: -30 degrees to 70 degrees and more Valley optoelectronic products service: Multi Optical Valley brand solar lights, high visibility and establish the image of solar street lights within the industry, my company, "All the pursuit of quality, customer satisfaction for the purpose of" spirit, "the most preferential prices, the most attentive service, the most reliable product quality" principle to your solemn promise: product quality commitment: 1, manufacture and testing of products are quality records and inspection data. 2, the product performance testing, we sincerely invited users to visit the whole process of the product, all performance checks, was confirmed to be qualified before packing shipments. Second, the product price promise: 1, in order to ensure high reliability and advanced systems were chosen selection of domestic and international high-quality brand-name products. 2, in the same competitive conditions, our company not to reduce product on the basis of technical performance, change the product on the cost of parts, in good faith in the most favorable price to your party. If you have questions, please contact the multi Valley Optoelectronics Technology Co., Ltd. Mr. Guo for your detailed answers