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LBRY Claims • adding-a-2nd-cooling-fan-to-the-solar

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8 Jul 2020 16:10:38 UTC
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Adding a 2nd Cooling Fan to the Solar Garden Shed
I decided to add a 2nd fan to help with the garden shed cooling. Also, more details on modifying the dryer vent.

While 1 fan did a decent job of cooling the shed, on very hot days, I felt more air flow could help. So I built up a 2nd fan to install on the right side of the shed. The pair of fans pull less than 500mA and are easily powered by the solar charge controller that can bring in up to 1300mA.

Since the shed walls are thin, it's necessary to remove the 4" vent flange on the vent. Cutting around the outermost molding mark results in a perfect hole size to match the fan ID.

The holes in the fan don't line up with those on the vent, so new holes need to be drilled. The upper two holes are the hardest, you need to make sure and fit them just on the edge of the recess molded into the vent. Of course if using the vent on a thicker wall, you may not need to remove the flange. The shed wall is just single wall vinyl material.

I showed the fan/vent installation in the earlier video:
https://youtu.be/sKZMGEg2PRk
In summary, use the 4 vent screws to attach the vent to the outside wall of the shed with some sealant. Then use the 4 fan screw holes to pull the fan up to the inside of the shed wall. I added a steel grill to the new fan as it's right next to my garden tool hanging area.

The modified fan controller is working great. It does get somewhat warm during the day when the solar PWM MOSFET is switching. But as the sun sets, that cools off and the thermostat in the controller shuts off once the temps drop below the set point. I have it set to turn on around 90*F. This way the fans run from around noon until about sunset.

Inside temps stay at ambient temps until early afternoon, then rise until the house shadow hits the shed in late afternoon. It's much better if I do need to get something in the shed than it used to be. Before I would often delay getting something until the following morning due to the inside heat. The added ventilation should also help control the humidity which was a bit of an issue before.

Arctic 120mm PC case fan affiliate link:
http://amzn.to/2rdR8x1
5-pack:
http://amzn.to/2rxJCwA

Deflecto Dryer Vent:
http://amzn.to/2qdeMFq

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And as always, thanks for watching

Intro:
Louisiana Fairytale by Austin Rogers
http://drfiddle.com/show_tune.php?id=94
...
https://www.youtube.com/watch?v=tnkvk5Sqg-Q
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