Thursday, June 21, 2012
solar envy
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Life off the grid in the SW Texas desert. An experiment in sustainable living. NUMBERS AT THE END OF EACH BLOG POST: temp at 8PM,high temp,low temp,rainfall,wind conditions(CalmBreezyWindyGusty). YouTube Channel https://www.youtube.com/c/TheFieldLab Daily live streams at https://www.youtube.com/thefieldlab/live
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11 comments:
So how do the fans work wired straight into the panel? Is there an issue with reduced voltage or have you included some sort of low voltage disconnect means?
Arn't the fans 12volts?
Did you know cannas are edible? Here's a link http://davesgarden.com/guides/articles/view/2686/ to a very nice article about preparing, cooking, and eating cannas.
Is that a hail damaged panel ?
Always wondered about the damage
caused to a pv panel by large hail,
if they are designed to take it. I've seen pictures of safety glass in cars damaged from hail, clean through........
When you wire two 12v items in series rather than parallel, each device gets 12v when the voltage source is 24v. That assumes that each device draws an equal current (amps in this case). It also means that if the solar panel is putting out 16 volts instead of 24 then the series connected devices would get 8 volts each. As a result some kind of controller is usually inserted between a variable output voltage device like a solar panel and a fixed voltage load. A simple load like light bulbs or LEDs would just dim, a more complex load like a motor might stall or even burn up if some sort of protection is not included. This is because of the magnetic inductance in a winding of a motor. On a vehicle, the fans would have fuses to protect against over current, it's possible that a solar panel would inherently self limit the current under low voltage.
I wonder how long those fans will last without something limiting the voltage to them?
Chris Miller
Our180.com - One Family's Journey To Finding True Happiness
What kind of amps or watts do those fans draw? Would one work well in a evap cooler? I know the Dome Dude is using them also.
Heavy draw on these...10 amps. I tried a smaller radiator fan for my Pepino swamp cooler...way too much air through for the size of my cooler. That fan pulled 8 amps...the 4 muffin fans combined on Pepino pull 1.4 amps and provide just the right amount of air flow.
I just bought that same Outback controller and will be buying my inverter hopefully really soon. It cost me a LOT more to get started with the solar than I could have ever imagined. Easily pushed our move to Terlingua back a couple of months.
Chris Miller
Our180.com - One Family's Journey To Finding True Happiness
looks like those roots are going to enjoy the new pot and soil.
Yep, that controller inverter looks nice...and expensive.
Good job saving that plant. It looks great.
The fans look great mounted up there in the greenhouse. I hope they work as you envisioned.
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