Skip to content
Do you have adblock enabled?
 
If you can read this, either the style sheet didn't load or you have an older browser that doesn't support style sheets. Try clearing your browser cache and refreshing the page.

(Science Alert)   Harness power from the tides but it will probably steal the tides like wind turbines steal the wind and solar steals the light   (sciencealert.com) divider line
    More: Spiffy, Wind power, Wind turbine, Renewable energy, Electrical generator, Coal, Energy, IHI Corporation, Tidal power  
•       •       •

757 clicks; posted to STEM » on 11 Jun 2022 at 7:17 PM (15 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



Voting Results (Smartest)
View Voting Results: Smartest and Funniest

 
2022-06-11 7:35:43 PM  
6 votes:
Wind farms DO steal energy from wind.  It just so happens we have an excess of that and don't care.

Solar farms DO steal energy from the ground beneath them.  It just so happens it's a net benefit for us in most cases.

Similarly, you're going to be sapping some energy from the tides... which I think, if I've got it right (and I probably don't) will increase the net transfer of energy from the Earth's rotation to the Moon's orbit very slightly.  But should also reduce flexing of the Earth's crust.
 
2022-06-11 7:32:35 PM  
5 votes:

Harlee: "Harness power from the tides but it will probably steal the tides like wind turbines steal the wind and solar steals the light"

Hate to break it to subby, but for the tides and the wind, at least, the power that is generated has to come from somewhere. TANSTAAFL. Science! So that means that the wind is a little reduced in speed, and those ocean currents are a little reduced in flow. Not enough to actually matter (with only one or a few turbans installed), but still, technically, reduced, even if only by minuscule amounts.


i'm waiting for someone to claim that b/c tides are caused by gravity that pitting in tidal generators we will cause the moon to fall down and kill us all.
 
2022-06-11 1:06:17 PM  
4 votes:
If there is even one moving part, oceans will destroy it.
 
2022-06-11 1:20:09 PM  
4 votes:
The fish will all catch turbine cancer! Did we learn nothing from all of the birds that caught windmill cancer?
 
2022-06-11 4:39:52 PM  
3 votes:
"Harness power from the tides but it will probably steal the tides like wind turbines steal the wind and solar steals the light"

Hate to break it to subby, but for the tides and the wind, at least, the power that is generated has to come from somewhere. TANSTAAFL. Science! So that means that the wind is a little reduced in speed, and those ocean currents are a little reduced in flow. Not enough to actually matter (with only one or a few turbans installed), but still, technically, reduced, even if only by minuscule amounts.
 
2022-06-11 7:25:18 PM  
2 votes:

I am Tom Joad's Complete Lack of Surprise: If there is even one moving part, oceans will destroy it.


That's my thought too. It's gotta be more wiggly than rotaty, I think. All internal plumbing and joints that way. Of course you'd have make the fins easily interchangeable and resealable but that's an engineering issue.
 
2022-06-11 7:36:26 PM  
1 vote:

sxacho: I am Tom Joad's Complete Lack of Surprise: If there is even one moving part, oceans will destroy it.

That's my thought too. It's gotta be more wiggly than rotaty, I think. All internal plumbing and joints that way. Of course you'd have make the fins easily interchangeable and resealable but that's an engineering issue.


theres literally a picture of it linked in the article
each unit has 2x 2 blade (11 meter ea) propellers driving turbine generators.  then a 3rd unit containing a power transformer and control unit in between them.
 
2022-06-11 8:03:53 PM  
1 vote:

I am Tom Joad's Complete Lack of Surprise: If there is even one moving part, oceans will destroy it.


If this thing were built anywhere but Japan, I'd be inclined to agree.

But Japan has been developing the technology needed to deal with the ocean for literally thousands of years. If anyone can pull this off, it's the Japanese.
 
2022-06-11 11:10:32 PM  
1 vote:

BrundleFlyForAWhiteGuy: I am Tom Joad's Complete Lack of Surprise: If there is even one moving part, oceans will destroy it.

If this thing were built anywhere but Japan, I'd be inclined to agree.

But Japan has been developing the technology needed to deal with the ocean for literally thousands of years. If anyone can pull this off, it's the Japanese.


I think the Scots were ahead of this. They probably still are. There are all kinds of ocean projects Japan is working on. Methane hydrates with Canada, hydrogen generation with Australia. In Okinawa, there is an ocean thermal project using OTEC for power generation and desalination. And then there is offshore wind... which has remained stunted beyond belief for decades now.

Here is the thing. Farkers bash their heads into walls calling Japanese people stupid for not "doing x." I have to admit that I do not understand why Japan does not "do x" in a lot of cases. I assume that they have their reasons, and that I might not understand them.

This is a creepy thing about Japan. Isaac Asimov picked up on it in his Foundation series, and William Gibson. It is a theme that keeps coming up. I do not think it is sinister, but the Japanese are definitely up to something. Whether people think that is true or not really does not matter.

It is possible that not turbine systems, but baffle systems, will reduce the number of moving parts.

Finally, I will say that Japan gets buffeted by nature quite a bit. Huge amounts of energy are available from winds, tides, currents, rain, etc. If Japan figures it out, then New Zealand, Greenland, and others will become energy exporters.
 
2022-06-12 3:11:37 AM  
1 vote:
I farkING KNEW IT.

Everyone has solar in my area now and its been getting darker earlier every day. They keep telling me because it's winter now but those farkers have just been lying to me and capitalising the sun.

/if you'll excuse me I have to take a shiat on their solar panels
 
2022-06-12 10:32:19 AM  
1 vote:
'Most powerful' tidal turbine starts generating electricity off Orkney

From 1 year ago: "The 680-tonne turbine is now anchored in the Fall of Warness where a subsea cable connects the 2MW offshore unit to the local onshore electricity network."
 
2022-06-12 2:29:42 PM  
1 vote:

2fardownthread: Here is the thing. Farkers bash their heads into walls calling Japanese people stupid for not "doing x." I have to admit that I do not understand why Japan does not "do x" in a lot of cases. I assume that they have their reasons, and that I might not understand them.

This is a creepy thing about Japan. Isaac Asimov picked up on it in his Foundation series, and William Gibson. It is a theme that keeps coming up. I do not think it is sinister, but the Japanese are definitely up to something. Whether people think that is true or not really does not matter.


Fark user imageView Full Size
 
Displayed 12 of 12 comments

View Voting Results: Smartest and Funniest

This thread is closed to new comments.

Continue Farking




On Twitter


  1. Links are submitted by members of the Fark community.

  2. When community members submit a link, they also write a custom headline for the story.

  3. Other Farkers comment on the links. This is the number of comments. Click here to read them.

  4. Click here to submit a link.