Hey , i would like to show you my portable solar power generator that I recently built. I want to thank all of the folks who posted their projects on YouTube previously, they were great inspirations for this one. I consider this a mediumsize and moderately priced portable solar power generator. It generates 110 amp hours and costs,.
Including the 100 watt solar panel that’s used with it about $950 dollars total cost. It’s portable, but I would say that it’s not meant for backpacking. It weighs about ninety pounds. This particular unit I built to use on my cruising boat I wanted something that was portable so that when I sold the boat and upgraded.
I could take the system out and take it with me. i also do some tent camping and it will be used for that purpose as well. The system offers again 110 amp hours, obviously the starting point is to get some power into this .so for demo purposes today I’m using a small 27 watt.
Solar panel and i’ll show you how all this mates and how the whole thing works. Come around to the back of the system and you will see what I’ve installed is a 2pin SAE port that allows the energy from the solar panel to come into the system.and once that is coming into the system it is going to a.
Solar charge controller that is under the top. we’ll get back to that in just a bit. The case itself is a Plano sportsman’s case .was about twentyfive dollars, it is quite rugged is much more sturdy than a typical Rubbermaid container by all means but was quite affordable and again is to be used.
Inside a cabin on a boat so it doesn’t need to be perfectly weatherproof but this is I think quite weatherproof as it’s built. On the front, after we get some power into the batteries we’re able to provide power through a number to accessory ports, we’ve.
Got 12 volt on the side I did install a 12volt power indicator. It’s reading about 13.4 volts going in right now. We’ve got USB power here, a 5 volt 1 amp and a 5 volt 2.1 amp USB port, of course a 12volt outlet here and on the AC side.
What i’ve installed, you’ll see how that works in a bit, is an AC voltmeter and ammeter and that gives me an indication that power is on here and also is very important because the ammeter tells me how many amps I’m drawing out of the system using various appliances and that’s very.
What can I power with a 100W solar panel
Hi this is amy at the alte store. we sell a lot of solar panels for diy offgrid solar projects. Generally when we design a solar system, we start with your loads, what you are trying to power, and from there you figure out what size solar panel you need. Weve got lots of tutorials walking you through the calculations . But now we are going to look at it the other way around, what can you power with a 100W solar panel? A solar panel is rated by the amount of power it creates at.
Standard test conditions, or stc. these conditions include the intensity of the sun, 1000 watt per square meter, the angle of the light hitting the panel directly, the temperature, 25 or 77, and other criteria. So as they say, actual mileage may vary, based on all of these factors in the real world. So we generally reduce the calculations based on the difference between the lab setting and your actual installation. When a 12V solar panel is rated at 100W, that is an instantaneous rating, if all of the test conditions are met, when you measure.
The output, the voltage will be about 18 volts and the current will be 5.55 amps. since watts equals volts times amps, 18 volts x 5.55 amps = 100 watts. Watts is like the speed of a car, miles per hour, how fast is it going at that instant, 50 miles per hour. To figure out how much power is generated over a period of time, you can to multiply the watts times the number of hours it is running. So in one hour, 100W x 1 hour = 100 watt hours. Again, with your car, 50 miles per hour x one hour equals 50 miles. Now that we know the math.
Behind it, we need to figure out how many hours to plug into the equation to determine how much power the solar panel will generate in a day. How many hours of sunlight that is equal to the intensity of standard test conditions, which is basically the sun at noon, will the solar panel be exposed to during the day? The number of hours of sunlight equal to noon is called sun hours. As you well know, even though the sun is up at 8 in the morning, it is not as bright as it is at noon. So you cant just say that.
The sun is shining for 10 hours, so ill multiple 100w x 10 hours. the hour between 8 and 9 in the morning is probably only half as strong as the sun from noon to 1 in the afternoon, so the morning hour would probably only be equal to sun hour. But the days are so much shorter in the winter than the summer, the number of sun hours would be dramatically different throughout the year. Also, the amount of sunlight Id get in Miami Florida would be different than the amount of sun hours Id get in Portland Maine. Ugh, this can.
Get complicated. luckily, some very smart people have taken decades worth of weather data and calculated out the number of sun hours for all over the world, broken out by month, and even the tilt angle that the panels are mounted. So I can look at the charts to see if I have a 100W solar panel, in Portland, Maine, installed at about 45 degrees angle, on annual average, Id get 4.6 sun hours a day. Likewise, if I took that same solar panel in Miami Florida, installed it at a 25 degree tilt, Id have an annual average.
Of 5.2 sun hours. just as a little aside, i want to make sure you see that during the months of June and July, Im going to get more power out of that solar panel in Maine than I will in Florida. With Miami being closer to the equator and Maine being closer to the north pole, the days are longer in the summer in Maine, and so the sun shines on the solar panels longer. Kind of cool, huh? OK, back to the question at hand, what can I power with a 100W solar panel? I need to figure out my worst case scenario, what is the worst.
Performing month that ill be using the panel? since for this example im going to be using it in Maine, during ski season, I need to figure on December. So how can I squeeze out as much power as I possibly can in December? By tilting the solar panel steeper so it points right at the low winter sun. So Im going to mount my 100W solar panel at 60 degrees and figure on 3.2 sun hours. Ill now take 100W x 3.2 sun hours and get 320 watt hours a day in December. Now, as you know, nothing in real life is perfect,.