4 ms·
I never said that you'd get 2.4A @ 8mph wind. I just dropped all the other numbers by 1/3rd. I have no idea how fast the wind has to blow to get that level of
by UI_at_80x24 4y ago
I never said that you'd get 2.4A @ 8mph wind. I just dropped all the other numbers by 1/3rd. I have no idea how fast the wind has to blow to get that level of power output.
I would be willing to bet that 8mph wind only gives you ~500mA of power (which is what USB v1.1 operates on), and that fancy internal battery is probably using off-the-shelf circuits so that you can charge phones.
This product sells* for $400+ CAD. You can buy several 10,000mAh battery packs for that amount of money, and probably have a lot of juice left over at the end of your camping trip. [Note: I just did some searching and an Anker 20,000mAh powerbank can be bought for $33. So I could buy 10 of them for less cost and probably not need to charge them for a couple of months.]
I'm kinda/sorta intrigued. The fundraiser page looks scammy IMHO, and is full of marketing fluff. I go bike-camping. Something like looks less practical then a 100w solar panel, but also more compact. Full sunlight is rare when/where I camp, I'm usually under tree-cover. That makes the solar panel weep, and is practically useless. I have to make compromises to make use of it. (i.e. the edge of a farmers field)
This turbine might require different compromises, but the best thing it has going for it; time. I could leave it operating for 2 days giving me 48hrs of charging time, compared to the 3hrs of direct-overhead sunlight I might get while camping. That's 16x the amount of time for 'energy generation'. Even at less then my 1/3rd rate of power, that might charge all of my battery banks.
I will wait for them to be built, and field tested by others. I'm not in a rush.
*Not shipping yet, but we promise soon! /sarcasm
- rascul 4y ago> I go bike-camping. I wonder if the turbine could be attached to the bike in a manner that would generate electricity while you ride.
- UI_at_80x24 4y agoThe drag it would induce would make it intolerable.
- 0_____0 4y agothe usual way of generating power on a bike is a front wheel generator hub. consider that a fairly fit cyclist can out 150 to 200 watts continuously. you might not notice 5W missing but you will certainly notice 20W. the 40W rating of this turbine is fully 1/5th of a fit cyclist's continuous power rating.
- deleted 4y ago[deleted]
- tlb 4y agoPower of a wind turbine is proportional to the cube of windspeed. So if 28 mph gets you 40 W, 19.4 mph gets you 13 W.