Post AcRL01sDRPdpPcv8k4 by MichaelHutchison@www.minds.com
(DIR) More posts by MichaelHutchison@www.minds.com
(DIR) Post #AcOzm6YUkae2WdINwu by scienceandtechnology@www.minds.com
2023-12-02T12:49:27+00:00
16 likes, 4 repeats
A two-megawatt windmill is made up of 260 tons of steel that required 300 tons or iron ore and 170 tons of coking coal, all mined, transported and produced by hydrocarbons. It hold 700 gallons of oil and hydraulic fluid, and like car these need to be replaced every 9 months.#climate https://www.minds.com/newsfeed/1577668023362261011
(DIR) Post #AcPPQMJK5cWhpKUSrA by berkesch@www.minds.com
2023-12-02T19:20:37+00:00
2 likes, 2 repeats
"green"
(DIR) Post #AcPPTLEmXJolMomwxk by Ixion@www.minds.com
2023-12-02T19:31:37+00:00
1 likes, 0 repeats
https://www.minds.com/newsfeed/1577769230143590414
(DIR) Post #AcQ4QO83QSEvaRLtUO by christophermontgomery@www.minds.com
2023-12-03T01:43:04+00:00
2 likes, 0 repeats
Going foreward in reverse
(DIR) Post #AcQm3x5Xg2NFKnHyuu by mark_striker@www.minds.com
2023-12-03T09:03:26+00:00
0 likes, 0 repeats
"Green" energy.
(DIR) Post #AcRKf93RXy9jbRDJx2 by oldnotweak@www.minds.com
2023-12-03T09:35:21+00:00
0 likes, 0 repeats
i thought they were made up of fiberglass plastic mixes. what is the hundreds of tons of steel in? the generator?
(DIR) Post #AcRKf9s8VUho8evnxw by excollier@www.minds.com
2023-12-03T10:53:04+00:00
1 likes, 0 repeats
the tower is steel....the nuts and bolts are steel - the burning blades are grp, they are burning...pay attention...
(DIR) Post #AcRKgLdqEZEyvkoQxU by pclx@www.minds.com
2023-12-03T09:43:41+00:00
0 likes, 0 repeats
The simple fact that it is burning shows it is not steel...
(DIR) Post #AcRKgMYuoMtVmlW0v2 by nedlyest@www.minds.com
2023-12-03T12:31:47+00:00
1 likes, 0 repeats
The oil used to lube the generator burn, as well as the turbines can to. The green energy is a scam. These will never produce the amount of energy that went into producing them. Plus once they retire the turbines then cannot be recycled. They just end up in a giant turbine grave yard.
(DIR) Post #AcRKmPpBavjBdp0nqK by galenlyle@www.minds.com
2023-12-02T21:54:56+00:00
0 likes, 0 repeats
In fairness, that analysis needs to be conducted for other forms of electricity production as well. As in, how much ore, oil, and steel go into a coal-fire plant or (probably even worse, in terms of inputs to build) a nuclear plant?The true requirements of building a windfarm (and solar, which is much weaker on the production side for a given area) often get swept under the rug, but if those costs still equate to something less than the counterparts they're intended to replace, then the "green" argument still holds water... at least, excluding considerations like persistence and reliability.
(DIR) Post #AcRKmQh4MapUKwDppY by niobleoum@www.minds.com
2023-12-02T22:53:27+00:00
1 likes, 0 repeats
For most part conventional power plants can last for decades without so much maintenance, especially you don't have to re-build half of the plant every year or so. Also one don't have to worry during economic calculation whether they will even get energetic breakeven, which for solar & wind farms is sometimes debatable. Renewables are fine, but should be rather promoted for individual buildings, rather than huge farms. They should work as decentralized contribution to power grid instead of alternative solution. On the other note - that "persistence and reliability" is about the most crucial aspect from engineering viewpoint, hence not taking it into account is akin to dishonesty.
(DIR) Post #AcRKms90IqDXTOV1cW by niobleoum@www.minds.com
2023-12-03T12:28:56+00:00
1 likes, 0 repeats
And no, the kind of glass/carbon fiber, as well as the resin aren't the same type as the ones we use to make bathtubs and cheap drones. It's specialty, very high quality material that is very expensive. There is a reason why every company that went hard into renewables now is in panic once the governments are trying to finally pull out financing out of it.
(DIR) Post #AcRKn0UZGYDhMaeMLI by niobleoum@www.minds.com
2023-12-03T12:24:49+00:00
1 likes, 0 repeats
@pclx To get the scale first you have to take into account power output of whole installation, for coal/oil plants the ratio is like tens of the annual output of the large wind turbine, and it goes to like 3-4 orders of magnitude with nuclear. One basically have to replace half of that windmill not even after a year of usage, and hell no, they are not remotely cheap, even with decades of government pumping tons of tax money into it to make it seems otherwise. The process of making glass (and even worse for carbon) fiber and epoxy resin alone consumes so much energy that it's ridiculous. I'm not even going into recycling/utilization of used parts since to date there are no other established protocols other than "uhm.. just lay it down and maybe bury it so people won't have questions". Composite materials have very cool properties but for most part they are nightmare for utilization and are way more expensive than "conventional" materials. This is why we mostly use them for high performance requirements (aerospace, sport cars etc.).PS. I think it's a bug with the edit button, kind of feels bad to not be able to fix typos.
(DIR) Post #AcRKnshthCy5VZIlcG by AdamMillwardArt@www.minds.com
2023-12-03T12:06:44+00:00
1 likes, 0 repeats
@pclx But one of those power plants produces the same amount of electricity as 1000+ wind turbines. The 100 biggest coal power plant all produce over 3000 megawatts, with some over 6000 megawatts. A wind turbine only produces 2.5 megawatts, maybe 3. When the maintenance on them IS needed, it's also inconvenient because they are spaced out over a large area, and a vehicle is needed to drive the oil and technician and whatever else OSHA requires them to have for safety equipment between them.
(DIR) Post #AcRL01sDRPdpPcv8k4 by MichaelHutchison@www.minds.com
2023-12-02T18:09:54+00:00
1 likes, 0 repeats
OK. Wind turbines are a cool idea, but the science proves they don't work. Back to the brainstorming boys!