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The Basics of Solar Power for Producing Electricity
Using solar power to produce electricity is not the same as using solar to produce heat. Solar thermal principles are applied to produce hot fluids or air. Photovoltaic principles are ud to produce electricity. A solar panel is made of the natural element, silicon, which becomes charged electrically when subjected to sun light.
晃动Solar panels are directed at solar south in the northern hemisphere and solar north in the southern hemisphere (the are slightly different than magnetic compass north-south directions) at an angle dictated by the geographic location and latitude of where they are to be installed. Typically, the angle of the solar array is t within a range of between site-latitude-plus 15 degrees and site-latitude-minus 15 degrees, depending on whether a slight winter or summer bias is desirable in the system. Many solar arrays are placed at an angle equal to the site latitude with no bias for asonal periods.旧约圣经
服装设计绘图软件The intensity of the Sun's radiation changes with the hour of the day, time of the year and weather conditions. To be able to make calculations in planning a system, the total amount of solar radiation energy is expresd in hours of full sunlight perm, or Peak Sun Hours. This term, Peak Sun Hours, reprents the average amount of sun available per day throughout the year.
It is presumed that at "peak sun", 1000 W/m of power reaches the surface of the earth. One hour of full sun provides 1000 Wh perm = 1 kWh/m - reprenting the solar energy received in one hour on a cloudless summer day on a one-square meter surface directed towards the sun. To put this in some other perspective, the United States Department of Energy indicates the amount of solar energy that hits the surface of the earth every +/- hour is greater than the total amount of energy that the entire human population requires in a year. Another perspective is that roughly 100 square miles of solar panels placed in the southwestern . could power the country.
The daily average of Peak Sun Hours, bad on either full year statistics, or average wor
st month of the year statistics, for example, is ud for calculation purpos in the design of the system. To e the average Peak Sun Hours for your area in the United States, Insolation Choo the area clost to your location for a good indication of your average Peak Sun Hours.
贡献的意思
For a view of global solar isolation values (peak sun-hours) u this link: Global Peak Sun-hour Maps , then, you can u [back] or [previous] on your browr to return right here if you want to.
So it can be concluded that the power of a system varies, depending on the intended geographical location. Folks in the northeastern . will need more solar panels in their system to produce the same overall power as tho living in Arizona. We can advi you on this if you have any doubts about your area.
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The four primary components for producing electricity using solar power, which provides common 120 volt AC power for daily u are: Solar panels, charge controller, battery and inverter. Solar panels charge the battery, and the charge regulator insures proper chargin
ztdg of the battery. The battery provides DC voltage to the inverter, and the inverter converts the DC voltage to normal AC voltage. If 240 volts AC is needed, then either a transformer is added or two identical inverters are ries-stacked to produce the 240 volts.
The output of a solar panel is usually stated in watts, and the wattage is determined by multiplying the rated voltage by the rated amperage. The formula for wattage is VOLTS times AMPS equals WATTS. So for example, a 12 volt 60 watt solar panel measuring about 20 × 44 inches has a rated voltage of and a rated amperage.the nuts
so do iV × A = W
volts times amps equals 60 watts
If an average of 6 hours of peak sun per day is available in an area, then the above solar panel can produce an average 360 watt hours of power per day; 60w times 6 hrs= 360 watt-hours. Since the intensity of sunlight contacting the solar panel varies throughout the day, we u the term "peak sun hours" as a method to smooth out the variations into a daily average. Early morning and late-in-the-day sunlight produces less power than the m
id-day sun. Naturally, cloudy days will produce less power than bright sunny days as well. When planning a system your geographical area is rated in average peak sun hours per day bad on yearly sun data. Average peak sun hours for various geographical areas is listed in the above ction.
Solar panels can be wired in ries or in parallel to increa voltage or amperage respectively, and they can be wired both in ries and in parallel to increa both volts and amps. Series wiring refers to connecting the positive terminal of one panel to the negative terminal of another. The resulting outer positive and negative terminals will produce voltage the sum of the two panels, but the amperage stays the same as one panel. So two 12 volt/ amp panels wired in ries produces 24 volts at amps. Four of the wired in ries would produce 48 volts at amps. Parallel wiring refers to connecting positive terminals to positive terminals and negative to negative. The result is that voltage stays the same, but amperage becomes the sum of the number of panels. So two 12 volt/ amp panels wired in parallel would produce 12 volts at 7 amps. Four panels would produce 12 volts at 14 amps.
