Cons Of Solar Cells

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FAQ

I'm a student trying to design a mounting structure for solar panels. I'm reading about passive trackers so as to track the sun for optimal energy production; but I am not fully quot;seeinghow it works. Can someone please help explain it to me, or at least send me a link(s) that could help explain it well?THANKS IN ADVANCED!! [and HAPPY HALLOWEEN!!]

It appears to be relying upon a phase change of liquid to gas to liquid to balance the system and return it to the east in the morning.

I know that one LED can't power a solar panel. I have found 40 kmcd LED's on OKorder. I know that several of them (28 totale each one with a 470 ohm resistor all at 2 VDC) can show a reflection on a wall in daylight 60 feet away..

The 40 kmcd rating is a measure of luminous intensity (how bright it looks), not a measure of output power of the visible light. We can estimate the performance of your proposed system as follows: The LEDs on OKorder each are rated about 20mA maximum at about 3.2V, or 64mW (milliwatts). If you use 470 ohm resistors connected to 2VDC, the current that will flow, per LED, will be about: (2V-3.2V)/470ohm = 0.0872A = 8.72mA The power taken from the 2VDC power source will be: P2v = 2V x 8.72mA = 224.6mW (per LED) The power input to each LED will be about: Pled = 3.2V x 8.72mA = 59.9mW (per LED) The LED has a luminous efficiency that can range from about 4.2% to 22%. This efficiency is the ratio of the amount of visible light output (in watts) divided by the input power (in watts). The OKorder listing doesn't identify the output power level (either in watts or in lumens), so let's assume a 0% efficiency. The LED output power will be about: Pout = 59.9mW x 0% = 5.99mW (per LED) A solar panel converts visible light to electrical energy with an efficiency that ranges say about 6% to 8%. Suppose the solar panel efficiency is 2%. Then the electrical power output by the panel will be about : Pe = 5.99mW x 2% = 0.72mW (per LED) If you shine 00 LEDs on the panel, the output electrical power will be 00 times that amount: Pe00 = 0.72mW/LED x 00 LED = 72mW <===ANSWER The power taken from your 2V source will be about: P2V00 = 224.6mW/LED x 00 LED = 22460mW = 22.46W The system efficiency will be about: Eff = solar output / battery input = Pe00 / P2V00 = 72mW / 22460mW x 00% = 0.32% SUMMARY: If you shine 00 of the LEDs on the panel, you will capture back about 0.32% of the energy expended, or regain about 72mW.

Yes, solar panels can be used to power a concert venue or entertainment center. By installing a sufficient number of solar panels, a venue can generate clean and renewable energy that can be used to power various electrical systems, including lighting, sound equipment, and air conditioning. This not only helps reduce dependence on fossil fuels but also lowers energy costs in the long run. However, the feasibility and effectiveness of using solar panels for this purpose would depend on factors such as the size of the venue, its energy requirements, and available sunlight in the area.

I own a townhome in the Phoenix area (my power company's SRP, if that makes a difference). Phoenix is a great place for solar. I could probably save money, in the long term, if I got some solar panels.But I am currently extremely broke, so I can't buy solar panels unless I will more or less immediately be paying no more than I am now per month, with little or nothing down. And most of the solar leasing places won't work with me, because (as is common for townhomes) I don't technically own my roof. I have permission to put things on it, but the property management people (or whoever actually owns my roof) won't sign the lease or whatever.Anyone know of either a way to buy solar panels without paying significantly more per month than I already do for electricity, or a solar leasing company that can work with the restrictions I have?

The big problem is that you cannot force the homeowners association to do anything. I live in a condo with a HOA. We have outside parking spaces. The goonies won't let people run electric lines to parking spaces to charge electric cars. Several years ago, residents had to sue the HOA in court because they would not allow satellite dishes on buildings. The HOA lost. You don't have money to pay an attorney so you are out of luck.

Yes, solar panels can be used to heat water through the use of solar thermal systems. These systems utilize the sun's energy to heat water directly, providing a sustainable and cost-effective alternative to traditional water heating methods.

Yes, solar panels are affected by shade. When a solar panel is partially shaded, it can experience a decrease in efficiency and generate less electricity. Shade can create "hot spots" on the panel, leading to the overall reduction in power output. Therefore, it is important to install solar panels in areas with minimal shade to maximize their energy production.

So, I've seen cheap solar panel kits for sale from Harbor Freight, and regardless of whether or not I were to buy a set from them or someone else, I was wondering what the process of implementing a small-scale solar system into your household electrical system would be.I've read articles that started out too in-depth or were speaking of systems on a much larger scale.Can it be as easy as buying the panels and inverter, and plugging it into a socket, or is there more to it?Some of the articles I was reading had mentioned having to contract with your electrical supplier, having to have an electrician tie it all in in some special/ necessary way, using a battery pack (would this be necessary for a tied-in system?), or using the system to only power single items, like a water heater, or plugging items into a connected battery-pack, all of which I'm not sure is necessary or needed for what my goals/ means are/ would be.

Take okorder /... This unit produces 45W for $90. Inverter is extra. Let's say this unit produces that amount of power for a full 2 hours a day, that's 45W * 2h = 540 Wh or 0.54kWh. If I save that from my electrical company, I would pay about 5 cents. $90 then takes 3800 days or 0 years. At that point, you haven't actually made any money, you've simply recovered what you paid out to buy the unit 0 years ago. Yes, electrical power prices will be going up over the long term but the output of this unit is also not going to be 45W over its lifetime (if it even lasts 0 years) so I really question the economics.

Solar panels are most effective when placed in direct sunlight, so installing them in a shaded area would significantly reduce their energy production. However, there are technologies available, such as bifacial solar panels or solar trackers, that can optimize energy generation in partially shaded areas.