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Solar panels for Vehicles?

Major question of now days in many question and answer sites is why electrical cars cannot charge itself by using solar power through fixing solar panels. because a car has a significant roof area and it can be used to fix solar panels. There are several factors to be considered when thinking about fixing solar panels
Solar panels are less efficient and therefore it produces less energy per unit area. And also solar panel does not have an ability of converting all of energy that absorbed from the sun. It is about 20 to 50% of energy of sun will be converted in to usable energy through even high efficient panel.  The top of an electric car has maybe 3–5 square meters of flat space.Solar panels, even at high noon, usually only produce about 200 watt-hours per square meter.
modern solar panels are inefficient and convert just 15-20% of the energy that reaches them. So that Revero solar roof, having received eight hours of pure sunshine, will generate enough power to drive 1.5 miles. But this can be reached within minutes of charged by using main electricity.Eight hours of charging modern electric car from a wall socket, it supports of running 200 plus miles of range.

 Another disadvantage of using solar panels on roof of the car is, it courses of increasing the weight of the car and then it affects on battery of fuel consumption negatively. Though less amount of energy cost is not low. Therefore the manufacturers don't use solar panels to there cars due to increasing of the price of vehicle. Some parts of the vehicle are operated by using solar energy that is why some electric and hybrid cars are fixed a solar panel which is small. But it doesn't use for charging purposes.



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