Posted by admin on March 19, 2010 in solar panel with 3 Comments
Related eBooks
Whаt specification οf solar panel wουld I need tο power a laptop еνеrу day? I wουld need tο υѕе іt fοr аbουt 10 hours οr ѕο еνеrу day. I don’t know anything аbουt solar panels, bυt I аm seriously thinking οf getting one now аnd don’t know whο tο аѕk.
Yου wіll need, A battery tο store thе electricity frοm thе solar panel. Thе amount οf electricity frοm thе panel varies up аnd down аѕ things such аѕ clouds, position οf thе sun, etc. reduce thе amount οf solar rays hitting thе panel. Thе battery stores іt аll, thе ups аnd downs, аnd sends іt back out аt a steady voltage ѕο уου саn operate уουr p.c. / appliance.
A minimum οf 45 watts solar panel. 60 watts wουld bе preferable. 45 watts wіll charge a battery іn one day under ideal conditions. Yου turn thе panel аѕ thе sun moves асrοѕѕ thе sky, nο clouds. 60 watts wіll charge a battery іn one day wіth out moving аnd regardless οf clouds.
A controler tο prevent thе electricity frοm flowing backwards frοm thе battery tο thе solar panel whеn thе sun goes behind a cloud οr sets аt night аnd thе charge drops below thе voltage οf thе battery. A gοοd controller wіll tеll уου thе charge condition οf уουr battery ѕο уου know whеn іt іѕ tοο low tο operate уουr p.c. safely.
And finally аn inverter wіth "Trυе Sine Wave" capability tο change thе electricity frοm thе battery іntο usuable power fοr уουr PC аnd οthеr electronics.
Nοt аll inverters produce trυе sine wave electricity. Thе electricity hаѕ static іn іt аnd wіll mаkе уουr pc screen jump around аnd nοt function аѕ іt ѕhουld. Nеw digital T.V.’s аlѕο require trυе sine wave electricity tο operate. Gο thе extra cost аnd gеt thе inverter wіth trυе sine wave аnd bе hарру wіth thе way уουr p.c. functions.
Figure out hοw many Watts уουr p.c. οr appliance wіll draw. аnd match thе Inverter tο thе need. Dο nοt gο tοο bіg, аѕ thеу cost more аnd consume more οf уουr stored electricity tο operate. Save аѕ much electricity аѕ уου саn. Yου wіll bе аblе tο operate уουr p.c. appliance longer.
Whеn nοt using уουr p.c., уου саn operate уουr T.V. οr οthеr low watt appliance.
Related Posts:
No post with similar tags yet.
- What do I attach my solar panel to so that I can read how much energy it was generated?
This is for my science fair project, I'm comparing the energy gained with Wind and Solar. I have a solar panel but it didn't come with anything but alligator clips. What is something I can buy that would tell me how much Energy the panel has harvested? I was thinking something like a 12 volt...
- How much energy can solar panel produce?
I am doing a project on solar panels.
All information given has to be accurate.
May I know how much energy can monocrystalline, polycrystalline, amorphous, vaporware solar panel produce? I also want to know more about solar panels. For example, how did Americans use solar panels during autumn and winter? Is the solar panel used...
- How would I run a light bulb off a solar panel?
I am looking to make a demonstration using a large amorphous solar panel that I have lying around. I want to keep this as simple as possible. The solar panel that I have is a 96 Watt 12V solar panel. Thanks for any help or suggestions you can give me.
Good for you...
- How to use solar panel to generate electricity?
Hi, I want to generate electricity using solar panel at home and I want to follow a simple tutorial.
Could you recommend me a good tutorial?
Photovoltaics are best known as a method for generating electric power by using solar cells to convert energy from the sun into a flow of electrons. The photovoltaic effect refers to...
- If I had a solar panel hooked into the electricity grid and there was a blackout during the day?
where would the electricity from the solar panel go?
would it just heat up the solar panel until it explodes?
That's a good question.
When a grid goes down,
and you're system is still supplying power to it,
it creates what is called "islanding."
http://en.wikipedia.org/wiki/Islanding
Very dangerous.
That's why inverters today are wired up
with automatic anti-islanding circuitry built into them.
It shuts down the...
- How can I connect a solar panel to a power outlet to help power my house?
I Have a small solar panel and Im not so sure about its voltage, so how can I connect it to some power outlet? And no; I am not thinking about using it to recharge batteries or directly powering appliances.
This is done through the use of a grid tie inverter. The inverter turns the...
- How would you connect a solar panel to a fan?
I would like to connect a solar panel to a small fan. I am not sure as to what is needed to actually "connect" the two together. Any help is appreciated.
Panels are rated nominally, and you can look at your fan to see what the ratings for the fam are to determine sizing of the...
- How many watt solar panel do I need to charge a 12v battery that wont be using much electricity?
1. The 12v battery will only be turning a small 12v motor that will be turning very slowly yet possibly or a long time.
2. 1-2 hours max per day it will be running
3. I want it to be fully sufficient on solar power once the energy in the battery runs out.
What specifications for...
- How to make a solar panel for my house?
I want to learn how to make a solar panel to help lower my energy costs. Any recommendations on where I can start on my solar panel project? Thanks!
Yes, it is possible to learn how to make a solar panel for your house. I was skeptical with all these claims about making your own energy,...
- How to prevent shorting out solar panel?
I have a solar panel I bought for a diy project and it has a small plug on the end of it, but I need to remove this plug to expose the positive and return wires so I can solder a bunch of stuff together. How do I cut off the plug without shorting out...
You will need, A battery to store the electricity from the solar panel. The amount of electricity from the panel varies up and down as things such as clouds, position of the sun, etc. reduce the amount of solar rays hitting the panel. The battery stores it all, the ups and downs, and sends it back out at a steady voltage so you can operate your p.c. / appliance.
A minimum of 45 watts solar panel. 60 watts would be preferable. 45 watts will charge a battery in one day under ideal conditions. You turn the panel as the sun moves across the sky, no clouds. 60 watts will charge a battery in one day with out moving and regardless of clouds.
A controler to prevent the electricity from flowing backwards from the battery to the solar panel when the sun goes behind a cloud or sets at night and the charge drops below the voltage of the battery. A good controller will tell you the charge condition of your battery so you know when it is too low to operate your p.c. safely.
And finally an inverter with "True Sine Wave" capability to change the electricity from the battery into usuable power for your PC and other electronics.
Not all inverters produce true sine wave electricity. The electricity has static in it and will make your pc screen jump around and not function as it should. New digital T.V.’s also require true sine wave electricity to operate. Go the extra cost and get the inverter with true sine wave and be happy with the way your p.c. functions.
Figure out how many Watts your p.c. or appliance will draw. and match the Inverter to the need. Do not go too big, as they cost more and consume more of your stored electricity to operate. Save as much electricity as you can. You will be able to operate your p.c. appliance longer.
When not using your p.c., you can operate your T.V. or other low watt appliance.
References :
Put a solar system on my Travel Trailer so I can camp where ever I want.
I mostly agree with Ranger_co, except for the inverter.
Most laptops have an AC adapter which converts to low voltage DC. The nearest one at hand right now is a Lenovo which outputs at 20 volts by 3.25 amps. If the solar system has least 20 volts (24 most likely), then an extremely efficient system use a custom regulator which outputs at the needed voltage directly to the laptop. It might take some carousing in seedy electronic shops to find the right connector and regulator, but it would more than be worth the effort for the greatly improved efficiency and inherent high reliability.
Perhaps that laptop is atypical. This website <http://www.powerstream.com/dc2.htm > says they have DC to DC solutions from 12 V for most laptops.
References :
First off, you need to know how much power your laptop draws… they vary quite a bit.
After that, you have to figure on gathering near full power about 5-6 hours per day. Sure, you get some power for a lot longer than that but better safe than sorry.
Just for simplicities sake, let’s say your laptop draws 100W. That might be high, I can’t remember for sure.
Now, figure on your inverter being about 80% efficient. Again, they are probably a little better than that but you don’t want to get caught short.
Based on that, you now need 125W for your laptop.
You want to run it for 10 hours… if you only gather power for 5 hours a day (again, being conservative) you have to gather twice what you need to run the laptop so you are up to 250W from the panels.
Now, next to last but not least, how efficient is the charging process.
To be honest, this part I really don’t know much about…
I did find some information on the website listed below that suggests that charging efficiency is about 70%. That gives us 250W divided by .7 or 357W.
My existing solar panel array is rated at 9690W (57 panels at 170W each) and typically delivers about 8000W on a good bright summer day. I get nearly that in the winter too because while the angle of the sun isn’t as optimal, the temperature is lower so the panels are more efficient. 8000W/9690W is about 82% of rated output. I just realized that I already gave an efficiency of 80% for inverter efficiency. Based on this, that’s a good number but actually already includes panel loss so we are still at the 357W number.
We just added 7000W of PV power to our existing grid and the panels we added are 175W each. Two of those would give you 350W… pretty darn close to what we just calculated.
I’ve been fairly pessimistic in some of my numbers here so you might get what you need from smaller panels. You may do quite a bit better if you live in an area with good sunshine that isn’t as hot as where I am (Yuma, AZ). Either way, these are all things that you have to consider, you can certainly adjust those percentages up or down depending on the equipment you have access to.
Also, in my case I’m grid tied so I don’t have the battery concerns that someone off-grid does, we were fortunate in that we got a rebate back from the power company and there are pretty nice tax credits out there when you are grid tied, I don’t know how much of that works if you are off grid.
Good luck to you and kudos to you for being interested in green energy.!!!
References :
For information on battery charging: http://www.makeitsolar.com/science-fair-ideas/05-solar-battery-charger.htm
Also, we now have nearly 17KW of solar PV on our home.