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August 23, 2018
News - Enginursday: Solar Fans
about 2 years ago
I also vote for doing the math first.
You are going to need a significant amount of air flow to reduce to temp of your car.
If you want to start with an experiment you could wait for your car to get hot and then start it, crack the sunroof, and run the built-in fan on full. See what effect that has on the temp over time. Then you could get an idea of the power and air flow requirements.
I believe this is actually a challenging project. My guess--based on work that I've done trying to cool my bedroom with fans and an Arduino--is that you likely undersized your fans and power requirements by an order of magnitude. But that's easy to fix.
The hard part is that the requirements to keep out rain and insects and dust, locate the fans on opposite sides of the car, not damage your car, make it removable, keep the costs low, keep the complexity low, etc., etc. are challenging.
Some of the other replies mentioned passive methods of keeping the car cool that are proven effective. But if you just want to tinker go for it!
No public wish lists :(