about 5 hours ago - No comments
Question by Morten H: Can someone please tell me some good and bad things about saving solar energy in water or stone from one day t? Can someone please tell me some good and bad things about saving solar energy in water or stone from one day to another. —————————————— Answer by Nthere’s nothing bad
about 22 hours ago - 5 comments
Question by : Can plugging appliances into a power chord save energy & reduce a utility bill? I saw a news story a couple days ago about this and would like some more info. Does this only apply to appliances not in use, like a TV or microwave? —————————————— Answer by JoePower is power is
about 1 day ago - No comments
about 2 days ago - 3 comments
Question by Mitch: How much current can you make with a solar panel? I would like to put solar panels on my vehicle to run a hydrogen booster, the problem is that a hydrogen booster requires 25 to 30 amps to be efficient. Is it possible to create this many amps at 12 volts using
about 4 days ago - No comments
Question by : Solar Energy accounts for how much of our energy consumption? I need to know out of all the electricity we use, how much of it comes from solar energy? source please —————————————— Answer by Brian DanthySince heat is what energy through inbody is released, about 25 – 30% of it comes for
about 5 days ago - 1 comment
Question by Steven: Is a wind turbine’s blade speed related to its power output? I’m doing a science fair project on the power output of wind turbines. I had planned to actually measure the power output of various types of blades, angles of blades, etc., but building a system like this seems to be beyond
about 5 days ago - 1 comment
Question by Conrad: Charging a battery with a solar panel? I have a boat with an automatic bilge pump, and I want to hook up my battery ( 12 volt deep cycle marine) to a solar panel so that it maintains its charge when the bilge pump kicks on, the bilge pump will only kick
about 6 days ago - 3 comments
Question by Scatterbrained: What would a 60 watt solar panel power? How many watts for a small home? What would be helpful is some chart or diagram that would put this in perspective for me. I thought it would be neat to save up for solar panels for my home and take the load off
about 1 week ago - No comments
Question by Ace: Are solar and wind energy systems suitable only when the sun is shining and the wind blowing? Also please refer me to any professional journals and popular literature sources that can help with this question? —————————————— Answer by SadieThere are some options. For either, you can tie them to the grid, and
about 1 week ago - No comments
Question by Top H: Can a solar panel company sell carbon credits? I am looking to rent roof space and install my own solar panels to produce power. Of course the power will be sold to the local power company, but I am wondering if I can sell Carbon Credits to local companies as well.
about 1 year ago
ya, use this calculator. might be more $$ than you think
http://www.bigfrogmountain.com/calculators/solarpanelsrequired.htm
about 1 year ago
Also you have to factor in how much energy you will need to store to be able to run your heater for a given lenght of time. In short, how many batteries you need to bank enough energy to run the heater for say 6 hours? How about the wattage of the inverter required to convert 12v into household voltage to run your heater?
There are formulas available on the web to help you calculate all this.
about 1 year ago
Not really sure what the current prices on photovoltaic panels are, but dang they are steep. Last time I checked, they were like 500 bucks for a 45 Watt panel.
Consider: A standard plug-in space heater uses 500-750 watts on low setting (depending on the model). You’d need a dozen panels to run it, and then only when you’re getting full sun! If you wanted to store any juice for when the sun goes down, add more panels, AND a bank of batteries for storage.
A small (500-1000 Watt) windmill is actually more cost-effective; the windmill itself running $500-1000. And, rather than use it for a heater, I’d recommend getting a 12VDC or 24VDC (or whatever is appropriate for the windmill you get) water heater element for your hot water heater, and use it to produce your domestic hot water! That is the second-biggest energy cost in the house, after heating!
But, back to heat: The best bang for your buck can be had from more insulation!
about 1 year ago
I’m not sure, but you could check this new DIY guide that was released recently. It’s called Earth4Energy and it promises step-by-step instructions for building your own solar panels.
about 1 year ago
I bought an e book for about $40 from http://www.OurEarth4Energy.com and it has detailed instructions on how to make photovoltaic cells , and also a windmill for under $200. They will power up more than just one small appliance. Depending on how big your storage battery is, will determine how much you will have to spend.
It was really simple to put together though. Good luck.
about 1 year ago
Hi Marc
I think you will be surprised at he cost of a panel to run a heater. You should look in to spending a weekend on a home build. It will be more than worth your while. Quite simple and saves an awful lot of money.
about 1 year ago
Hey Marc,
It’s not a bad idea to buy a panel, but I would definitely recommend that you learn to build the panel yourself. It will save you A LOT of money. It’s really not that difficult either.
Here are just some materials that you’ll need:
A sheet of copper flashing from the hardware store. This normally costs about $5.00 per square foot. We will need about half a square foot.
Two alligator clip leads.
A sensitive micro-ammeter that can read currents between 10 and 50 microamperes. Radio Shack sells small LCD multimeters that will do, but I used a small surplus meter with a needle.
An electric stove
A large clear plastic bottle off of which you can cut the top.
Table salt. We will want a couple tablespoons of salt.
Tap water.
Sand paper or a wire brush on an electric drill.
Sheet metal shears for cutting the copper sheet.