121

Using The Wind And Magnets To Make Heat (hackaday.com)

submitted 2 weeks ago by [email protected] to c/[email protected]

18 comments fedilink hide all child comments

top 18 comments

sorted by: hot top controversial new old

[-] [email protected] 32 points 2 weeks ago

Handling a pet peeve of mine. 3 seconds into the video, he talks about induction stovetops and shows a picture of a glass top radiant stove.

Radiant stoves are just slightly better than electric resistive stoves. They are not induction though they can look similar. People try them and hate them and assume induction is terrible when it isn't.

[-] [email protected] 17 points 2 weeks ago

Induction stoves are no joke. Had one in a ski condo I rented and it boiled water faster than I could grind the coffee beans! Threw my whole routine off!

[-] [email protected] 6 points 2 weeks ago

That may have more to do with water boiling faster at higher altitudes.

[-] [email protected] 8 points 2 weeks ago

Nah, I've used my parents' induction hob and it's ridiculously fast to boil liquids. A half pint of milk was boiling over in 20s. Gas stoves can't compete.

[-] [email protected] 2 points 2 weeks ago

That’s partly because the pot itself heats up. With conventional stoves you have to heat the pot first, which takes a lot of time.

[-] [email protected] 2 points 2 weeks ago

Yep. It's very cool, but takes a little getting used to at first!

[-] [email protected] 3 points 2 weeks ago

It’s very cool

Wait, are they cool or hot? I'm so confused.

[-] [email protected] 1 points 2 weeks ago

Yeah, mine can boil a liter of water in 101 seconds at 450ft altitude.

I had a unique opportunity to directly compare my infrared cooktop (which I mislabeled as resistive) and my new induction cook top, so I did a little experiment to compare them: https://www.reddit.com/r/Cooking/comments/seaint/for_anyone_contemplating_upgrading_from_an/

TLDR: It boiled water in half the time using roughly half as much energy. Part of that may be due to the test pot being smaller than the burner, but this was the case for both stoves. It's just the induction doesn't heat the space around the pot.

[-] [email protected] 1 points 2 weeks ago

Glass ceramic stove? Yeah, they're the second worst.

[-] [email protected] 8 points 2 weeks ago

Isn't this just a DIY brushless dynamo? Am I missing something? Still cool tho

[-] [email protected] 8 points 2 weeks ago

inserting the magnets was pure comedy.

[-] [email protected] 7 points 2 weeks ago

Does this have any benefit over just using friction to convert the rotation into heat? I suppose it would suffer less wear, but it also seems way more expensive.

[-] [email protected] 12 points 2 weeks ago

As you said, friction would introduce more wear and maintenance. This gentleman's idea is to attach a windmill to drive the rotary induction wheel, which would essentially be "free" heat energy, and an interesting hobby contraption. Entertainment and a sense of accomplishment is probably his main goal.

Its not a brand new idea, just a different application of the principle. Induction generators already exist, and they can indeed be used with windmills, but to generate AC current versus heat energy.

More power to this fun and crazy inventor. Maybe he can find practical and reproducible use for this effect. If not, he's gonna have the most unique water heater ever invented. With this he could make a fully mechanical hot water heater that burns no fuel and uses no electricity. He would just have to make a mechanism to disengage a clutch at the top temperature.

[-] [email protected] 2 points 2 weeks ago

If he turned it into a generator and powered a heat pump he could get 2-3x the heat energy than he generates.

[-] [email protected] 1 points 2 weeks ago

If you read comments to the original article, it is far from new idea and some farmers have used for a long time.

[-] [email protected] 4 points 2 weeks ago

Why not use just a regular generator with that windmill, which would generate electricity for you, probably more efficiently, which you can use for light, heating, or whatever you want.

[-] [email protected] 4 points 2 weeks ago

The article doesn't really do Tim justice. He's a bodger who is basically a genius for what I can only describe as Goblin technology. His projects are as much about fun and experimenting as having a result. In the first windmill video he acknowledged that he could just buy a small electric windmill, but that's not the point.

I mean, this is the dude who made a narrow gauge railroad and a compressed air locomotive to transport wood to his terrifying biochar chopper and crucible.

[-] [email protected] 2 points 2 weeks ago

I imagine he wants to avoid dependence on fuel suppliers, or pollution.

this post was submitted on 25 Jun 2024

121 points (98.4% liked)

Technology

55938 readers

3288 users here now

This is a most excellent place for technology news and articles.

Our Rules

Follow the lemmy.world rules.
Only tech related content.
Be excellent to each another!
Mod approved content bots can post up to 10 articles per day.
Threads asking for personal tech support may be deleted.
Politics threads may be removed.
No memes allowed as posts, OK to post as comments.
Only approved bots from the list below, to ask if your bot can be added please contact us.
Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago

MODERATORS

[email protected]