Talk:2641: Mouse Turbines

Explain xkcd: It's 'cause you're dumb.
Revision as of 22:42, 4 July 2022 by 172.69.33.113 (talk) (reply)
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Is anybody going to try to calculate the amount of power such a turbine could collect? -- Dtgriscom (talk) 19:24, 4 July 2022 (UTC)

Good idea; what should we use for an estimate of the geometry for https://www.omnicalculator.com/ecology/wind-turbine ? The final panel makes it look like the blade diameter is about twice the size of a fist. [1] says "exhaled air velocity varies from 2.2 m/s to 9.9 m/s (5.66 ± 1.57 m/s, mean ± SD) and exhalation time varies from 2.10 s to 8.21 s (4.42 ± 1.73s, mean ± SD)."
I guessed 10 cm radius and used that mean breath speed. I should have used the top 9.9 m/s though, shouldn't I? 172.70.214.185 20:56, 4 July 2022 (UTC)
After a closer look at that article, the mean is more appropriate. 172.70.206.95 21:19, 4 July 2022 (UTC)

Although these miniscule wind turbines don't generate much power, mice probably don't need much. Barmar (talk) 21:17, 4 July 2022 (UTC)

That's certainly a fair point. How much power would a mouse-sized fridge need? 172.70.206.95 21:23, 4 July 2022 (UTC)

Someone please check my mouse energy needs math and assumptions. I made a couple misplaced decimal mistakes getting to where it is now, and I'm going to have another beer. 172.70.211.52 22:17, 4 July 2022 (UTC)

I'm confused by the statement that smaller turbines are less "efficient". There's nothing about efficiency at that link. 172.70.114.43 22:33, 4 July 2022 (UTC)

The graph shows the ratio between size and output has risen from about half to 85%. What is a better term for this? I'm pretty sure one of the multiple definitions of efficiency is technically correct, but it can never hurt explaining better. 172.69.33.113 22:42, 4 July 2022 (UTC)