All Questions
Tagged with energy solar-cell
14
questions
1
vote
0
answers
60
views
Are PV panels convenient without incentives?
I finally finished a project in which I designed a 55 kW of PV system for a 50 kW load and I finally calculate costs and revenues over 20 years. I found that with a 25% of incentives for the cost of ...
1
vote
0
answers
38
views
Getting most power from low voltage solar powers, each different angle
I have a specific problem. I have 10 small solar panels, each max 5.5V and 100mW power. Each one is at a different angle. I want to get the most power out of it. Cost is not really a problem, but I do ...
- 11
2
votes
1
answer
75
views
Drawing energy from a 3.7V LiPo battery while simultaneously charging with a solar panel
I have a 200mAh 3.7V (0.7W) LiPo battery that I am looking to use as an energy source for a large model airship.
I also have a 7.2V 100mA (0.72W) solar panel that I would like to use as a means of ...
- 21
0
votes
1
answer
32
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Using solar to recharge a Li-po battery
I'm looking for help determining what size of solar (PV) I should use to recharge my Li-po battery after discharged.
Battery Characteristics :Capacity:1600mAh
Nominal Voltage: 3.7V
Charging ...
5
votes
3
answers
817
views
Mosfet or bjt choice for low voltage joule thief application
I make solar energy harvester using joule thief circuit with a small solar cell as the input. The output voltage from the solar cell is 0,5V. But the generic transistor, exactly silicon material need ...
- 103
0
votes
1
answer
492
views
Dual axis solar tracker with singlr LDR
I'm working on dual axis solar tracker project, but the task I was given was to make a solar tracker work with a single LDR (Light Dependent Resistor).
The LDR would be placed in a pipe which is ...
- 1
0
votes
1
answer
1k
views
How much capacitance/joule/watt is needed on average household' energy storage system with supercapacitor?
I am on the process of making assumption how much capacitance/joule/watt is required on average supercapacitor as household' energy storage system. I plan the design for energy hub to be charged by ...
0
votes
3
answers
3k
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Solar panel calculation
I have a small solar panel of the following,
Area = 0.0078 square meter
Rated Power = 1 W
Now, I am interested to calculated the total energy this solar panel can harvest over a day.
I am taking ...
1
vote
1
answer
85
views
How to monitor produced energy?
I want to monitor energy produced by 250W solar panel. But I need some hints. Does anyone knows something? Is it possible using ACS758 chip or better I have to use current transformator?
Finally I ...
- 218
0
votes
4
answers
4k
views
Calculation of PV daily energy yield
How can you calculate how much energy a PV panel (known size and wattage) produces in a day given the exact insolation in kWh/m2/day?
2
votes
2
answers
864
views
charge extraction from solar cells in low light conditions
This is probably not that deep a question, but how can one extract power from panels in low light? A 6V panel would dip to ~2V or so, and power output would sink lower. In conventional systems, how is ...
- 21
2
votes
1
answer
2k
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Difference between indoor and outdoor PV panels
I am building an energy harvesting sensor for building installation, and I have to choose between two panels:
Indoor, 5V, 47uA Isc @ 200 Lx
Outdoor, 6V, 15.9mA Isc @ 50 kLx (note the different light ...
- 13.5k
0
votes
1
answer
92
views
flexible and cheap solar cells? howto transform the energy?
I would like to charge my iphone through solar energy, but i need to know a couple of things:
. What should I do to convert the solar energy into energy delivered through the usb?
. Where can I fine ...
- 101
8
votes
4
answers
1k
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Solar cells & Batteries
I was planning on having a couple of solar cells recharging a battery!
My question for this is:
How can I recharge a battery through solar cells and at the same time let the battery do some work(...
- 91