The sun lights which is street lamp can the deficiency

The deficiency of the solar street light price high solar street lamps, initial investment is large, the total cost is the same a lamp solar street light power conventional street 3. Four times; Energy conversion efficiency is low, solar photovoltaic battery conversion efficiency is about 15% ~ 19%, and theoretically silicon solar electricity



the deficiency of the solar street light price high solar street lamps, initial investment is large, the total cost is the same one solar street lamps power conventional street 3. Four times; Energy conversion' Energy conversion refers to the fixed in a closed environment can neither created nor disappear, the energy conversion from one form into another form or transferred from one object to another object. 】 Efficiency is low, solar photovoltaic battery conversion efficiency is about 15% ~ 19%, and theoretically silicon solar cell' Silicon solar cell is based on silicon substrate materials of solar cells. 】 Conversion efficiency can reach 25%, but may be caused by surrounding buildings block after the actual installation efficiency is lower. The solar battery' Solar cells can effectively absorb solar energy and convert it into a power semiconductor components. 】 Covers an area of 110 w/m2, 1 kw solar cell area of about 9 m2, such a large area of it is almost impossible to fixed on the light pole, so for the expressway, the main still not apply; Influenced by geographical climate conditions, due to rely on the sun to provide energy, the local climate weather conditions directly affect the use of street lamp. Rainy day is too long can affect lights, which leads to the illumination brightness or could not reach the requirements of national standards, appear even not bright lights. The price of battery and the controller is higher and the battery is not durable, must be replaced periodically, the service life of the controller are also typically only 3 years, because of too much affected by the outside factors such as climate results in the decrease of reliability. Solar street lights maintenance difficulties, panels, heat island effect quality control testing, life cycle is not guaranteed and can't be unified control management. May not appear at the same time lighting 【 When lighting, male, endocrinology, deputy chief physician, associate professor, supervisor of postgraduate, master of medicine. 】 Situation; Light narrow range.