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| Where to buy small solar panels? http://currentcost.com/support/viewtopic.php?f=10&t=21461 |
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| Author: | lusil [ Mon Feb 20, 2012 2:01 am ] |
| Post subject: | Where to buy small solar panels? |
The fan I am insterested in requires a 20 watt solar panel. The fan runs directly off this panel and as the sun increases the fan increases speed. It would be hooked up to a thermostat so that it wouldn't start running untill the greenhouse is a certain temperature. The fan is .7 amps when 12vdc is used. A light would be like 130 watts 2.1 amps 12vdc This is just a normal light, so I can work in the evening. It is not for the plants. I am sure I can find suitable lighting elsewhere because the greenhouse place only offers this light. I would like the battery to store power for the lights and maybe something else like a small fan. I understand that the solar panels are NOT cheap however I just think that buying them from a company that specializes in solar products, rather than greenhouse products, would be smarter. Then I can buy the fan and other special stuff from the greenhouse place. I really only want a simple setup and right now my main concern is ventilation so starting with the simple battery-less system is fine with me. I can always upgrade later. Ventilation is a necessity as other things, like lighting, are not right now. I have always wanted a greenhouse however I don't want to use more power for it. I am trying to build a greenhouse so I can get rid of some of my light stands and save energy. I think that also building the greenhouse with a smaller projection from the house would also save money (less air space to heat by the sun) I haven't fully determined what to do for winter heating yet though. We use a pellot stove mainly and will be buying a second one this summer hopefully. Our current one doesn't have a battery backup. I think the heating situation really depends on how much it does actually cost to heat. The "greenhouse heating cost" calculators don't predict it will cost too much to heat but I really don't believe them that much. |
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| Author: | SaFeHeX [ Sun May 20, 2012 3:06 pm ] |
| Post subject: | Re: Where to buy small solar panels? |
Google is your friend! I mean that seriosly. It depends on what part of the world you are located in as to what companies there are in your area/country to supply you with what you need. There are often solar cells and panels of varying sizes and ratings to be found on the likes of eBay etc. |
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| Author: | SeekerAfterTruth [ Fri May 25, 2012 3:52 am ] |
| Post subject: | Re: Where to buy small solar panels? |
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