Solar Shed Ventilation COMPONENTS Explained! Part 3 Favorite Brushless Fans DC converters

This is a detailed video in response to a viewer request; they wanted me to show how the different parts of a solar shed ventilation system are connected together. I will explain the various components of a DIY solar shed ventilation setup and show you how to connect them to your solar panels.

This video builds on previous content. Please be sure to check the links below for Part 1 and Part 2.
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🟢 Playlist of all solar shed ventilation content:
   • Solar Powered Shed Ventilation - DIY  
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🟢 Solar Shed Ventilation - Complete Guide!
   • SOLAR shed ventilation! COMPLETE GUID...  
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🟢 /// More Shed Videos
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Part 2 - follow up - low voltage shed ventilation
   • Low Voltage Solar Shed Ventilation Pa...  
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The second fan installation in my other shed
   • Low Voltage Solar Shed Ventilation Wi...  
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This video covers the most basic setups to more advanced. I have tried a lot of setups and currently have 3 solar fans in 2 sheds.

The easiest, fastest and simplest way to get air moving out of your shed, is to take a 50-75 Watt 12-volt solar panel and connect it to a 10-12 inch 12-volt car radiator fan. You literally connect the positive of the fan to the positive of the solar panel, same for the negative. The sun shines, the fan moves some air. It doesn't get any easier than that.

The second level is to use a DC-DC converter. It simply takes a higher and variable voltage from the solar panel, and regulates it down to a level you set. You can also use a PWM motor speed controller, and or a Golf Cart 12V DC Converter.

With a regulated output, you can use the more sensitive brushless DC server and mining fans for solar shed ventilation. These fans require a regulated supply of up to 12 Volts, and can burn out if the voltage is not regulated.
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🟢 /// PARTS LIST ///
Support my work (optional)! Please note these are AFFILIATE LINKS and I get a tiny commission if you purchase through them. Thank you :)

12 Volt (10 / 12 / 14 / 16 inch) 90-120W car radiator fans https://amzn.to/3Kt33wX

Small 6 inch car radiator fan https://amzn.to/3KOXwlQ

Favorite brushless DC fan: https://amzn.to/458UZez
My favorite brushless DC fan so far for shed ventilation and cooling is the SJ SG121238BS type of fan. It is a server or mining fan vs. normal computer fan. Unfortunately there are many copies and they may all work different. The version I have runs OK as low as 6 Volts and is very smooth, moving lots of air. They are worth a look.
https://amzn.to/40ALdhH

/// Example Golf Cart DC converter:
JP Golf Cart DC-DC converter 24-36-48V to 12V (120W) https://amzn.to/3UpqrA9

/// Example DC converters:
DC buck converter with display! https://amzn.to/3O1CrWR

XINGYHENG 5A DC-DC Buck Converter (small fans or low power setting only) https://amzn.to/3zPOdf3
D-FLIFE CC-CV-DC Converter https://amzn.to/3nZsuyB

/// Example PWM motor controllers:
RioRand 30A PWM https://amzn.to/3zPJ3Q9
HiLetGo 10A PWM https://amzn.to/3MAlr9Z
PWM motor controller with display https://amzn.to/400LSbJ

/// Solar Panels - picked based on Vmp
HQST 100 Watt solar panel https://amzn.to/46S9qV4
HQST 50 Watt solar panel https://amzn.to/44nS3tG

/// Solar panel sizing:
For a 12V 85w car radiator fan, you want a minimum 50 Watt 12 Volt solar panel. Directly connected, it will run around 5-6 volts in direct sun and move some air.
(Adding an adustable DC converter at the right setting can actually make the fan run a little faster.)

A 100 watt solar panel can burn up the car radiator fan in direct sunlight, as it might push 12+ volts continuously. Under this condition, the fan will get extremely hot. Keep the voltage at 10 volts or less to maximize the car radiator fan's lifespan.

For a 12V brushless DC mining or server fan with a small DC converter, as little as a 30 Watt solar panel can be useful. However, the 50 Watt solar panel is a better choice especially since it produces more power in cloudy weather when the shed, chicken coop or outbuilding will still need some air flow.
~~~Subscriber Requested info! - battery and thermostat for fan~~~
12V Thermostat for fan https://amzn.to/3DwYf6B
12V AGM 18ah https://amzn.to/3Ke4QXm
12V LiFePo4 battery https://amzn.to/3OA5KjH
Thermostat: I recommend a mechanical cooling thermostat.
Here's an example rated at DC 30W and can handle both cooling and heating modes. https://amzn.to/465dSif
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