The energy thread - Page 25

mapuc · 07-29-23, 11:38 AM

Quote:

Originally Posted by Jimbuna

^ Solar energy.

No the words I was looking for was "degree of effectiveness"

Like an engine P1 in and P2 out where N(Eta) is the difference between P1 and P2.
(If I remember correctly from my education)

Markus

Gorpet · 07-29-23, 07:43 PM

Quote:

Originally Posted by Oubaas

If the military personnel of the world would snap out of the brainless reverie in which they're lost, and stop fighting each other at the behest of corrupt, brainless, morally bankrupt, evil civilians, we could band together, seize the world at gunpoint, and implement a samurai-style government in every country on Earth, with all nations working together to maintain good order and discipline throughout the world.

We would walk as kings. All who opposed us would fall. Those who were not warriors would be required to genuflect as we passed. Each of us would be answerable only to our respective warlords and the Shogun of our particular nation. Those without honor would be required to commit seppuku. Warriors with no warlord would become ronin.

That would fix things. The crap would stop in short order.

Yes from a State that gave us,Two Hillbilly's... Bill and Hillary Clinton honor requires you to commit seppuku.Or become ronin and go to Ukraine as a warrior and find a new Shogun.His name is Zelinsky and he embraces all ronin.He desperately needs Arkansas ronin to drive those invincible Bradleys.

Jimbuna · 07-30-23, 07:36 AM

Shell has revealed a big fall in the second quarter of its financial year, largely due to energy prices plunging from their Russia-Ukraine war peak.

The oil and gas major reported net profits of just over $5bn (£3.9bn) for the three months to the end of June.

The figure represents a drop of more than 50% on the $11.5bn achieved in the same period last year and fell short of analysts' estimates.

It was also well down on the $9.65bn sum the company raked in during the first three months of the year.

Shell said it was, nevertheless, rewarding shareholders with a further share buyback and hike to its dividend.

Dargo · 08-02-23, 12:56 PM

Researchers have found a way to turn cement into a supercapacitor. This would make it possible to store electricity in it and could, in theory, turn housing foundations and roads into relatively cheap batteries. The research, conducted by the Massachusetts Institute of Technology, has been published in the scientific journal PNAS. In addition to cement powder, water and black carbon were used to create the supercapacitor. This is because cement by itself does not conduct very well, but black carbon does. Moreover, the latter material is relatively cheap.

When these materials are combined in a specific way, a conductive nanocomposite is created. This is because water easily combines with the cement powder, but the particles of black carbon actually repel water and then clump together. This creates 'rank-like' shapes in the hardening cement that can act as a network of wires. The cement is then cut into thin sheets. If a membrane and electrolyte are then added, such as potassium chloride, the capacitor should be able to store and release energy. This does require a lot of cement. 10kWh, enough to power an average household for a day, is expected to require 45 cubic metres. That is about as much as is used for the foundation of a standard residential house. The cement capacitors the researchers created, measuring 1mm thick and 1cm wide, had enough power to run a few LED lights. The research team believes that if the same method is used to build roads and car parks, the electric concrete could theoretically store renewable energy and deliver it to electric cars via induction charging. As the materials are relatively cheap compared to other home batteries, this is also potentially a way for third-world countries to store green energy.

The group has patented the technology and is now trying to scale it up. This is no easy task, the team argues. As supercapacitors increase in size, their electrical conductivity typically decreases. The next goal is to make the cement capacitor as powerful as a 12V car battery.

Skybird · 08-04-23, 05:58 AM

It must be frustrating for them, they try so hard to make the addition of 2 and 2 appear as 5, but they just dont get there. Tichy's Einblicke - https://www.tichyseinblick.de/kolumn...-energiewende/ - writes:

----------------

Hectic expansion is of no use: Solar and wind in the red in 2023

In the first half of the year, renewable energy plants produced less than in the same period last year - despite the construction of more than 500 new wind turbines, for which Robert Habeck praises himself. Other data also show the absurdity of his energy transition.

When an ARD journalist recently asked him on Tagesthemen where the electricity for the planned production of green hydrogen would actually come from, Economics Minister Robert Habeck answered confidently: The expansion of renewable energies is now really making rapid progress. So there is no reason to worry. The Green politician likes to be filmed in videos of the ministry in front of wind farms that have just been inaugurated. The message is that more and more electricity is coming from wind and solar parks. And the minister is personally pushing this development.

However, the reality - and here the Tagesschau editor didn't bother to check - looks somewhat different. Although, according to the statistics of Deutsche WindGuard, 551 new wind power plants with a total capacity of 2.403 gigawatts and photovoltaic plants with a capacity of 7.5 gigawatts were added across Germany in 2022, the generation of wind and solar power did not increase in the first half of 2023 compared to the same period of the previous year - but rather decreased. And by two terawatt hours. The Federal Environment Agency states: "In the first half of 2023, despite the increased addition of new photovoltaic and wind energy plants, about one percent less electricity was generated from renewable energies (just under 136 terawatt hours (TWh)) than in the first six months of the previous year (just under 138 TWh)."

This does not come as a surprise: installed capacity does not have all that much to do with actual generation. In weather-dependent electricity production, it is the wind and sun situation that decides, not what the plants could theoretically deliver. Although this should also be known in the Federal Ministry of Economics, Robert Habeck repeatedly operates with misleading capacity or percentage figures. In fact, the share of renewable energies in electricity generation increased in 2023 compared to the previous year. But this is simply because total electricity consumption declined in the first six months of this year due to the poor economic situation. So if you look at the absolute figures here and there, you get a very different picture than what the federal government wants to publicly disseminate.

Since large-scale industrial storage facilities are lacking for the foreseeable future, Habeck plans to build a gas-fired power plant capacity totalling 30 gigawatts by 2030 in order to secure the electricity supply despite fluctuating feed-in from renewables on the one hand and the planned shutdown of coal-fired power plants on the other.

The catch is that so far there are not even rough plans for these power plants, which in the ministry's imagination will serve as gap fillers from time to time in the future. That, in turn, is because it is completely unclear who is to operate them. Gas-fired power plants, which are only allowed to run for 1500 or 2000 hours a year on an auxiliary basis, cannot finance themselves by selling electricity. They would therefore need massive state subsidies. How this is to be done, how much it will cost - all this is so far in the typical Habeck fog.

Paradoxically, the German energy transition system also runs into serious problems when the summer sun is shining and the wind is blowing well. Then electricity from wind and solar plants often cover demand alone on days when consumption is low, such as on Sundays in July. On 2, 16 and 23 July, renewables each generated up to 49 gigawatt hours during the day. And on the last Sunday of the month, the 30th, they managed it almost without conventional power plants.

The problem is the lack of storage capacity. On all Sundays in July, the supply of electricity therefore exceeded the demand, and the price of electricity on the exchange tipped into negative territory. Particularly drastic on 2 July: on that day, someone who bought a megawatt hour from Germany abroad got an extra 500 euros at certain hours.

For operators of pumped-storage plants in Austria, for example, this has been opening up a splendid business field for quite some time: if Germany doesn't know what to do with its solar and wind power, they take it plus a disposal premium - in order to sell the energy back to Germany at a high price when the electricity price turns positive again. The disposal fee of 500 euros per megawatt hour ends up in the grid fee bill - and thus with every German electricity customer. In some regions, grid fees already account for up to a third of the electricity price.

So the hectic expansion of wind and solar energy not only does not bring a plannable increase in generation - it also makes electrical energy drastically more expensive. Even if the promised hydrogen storage facilities do eventually come, they will not ease the cost situation. This is because a good 60 percent of the energy is lost between the storage and withdrawal of electricity surpluses. Although this energy is occasionally available for zero or negative prices on the stock exchange, it must first be paid for with fixed feed-in tariffs. These rates are currently around 4 cents for wind power and up to 7.8 cents per kilowatt hour for solar plants.

Conclusion: In all likelihood, coal-fired power plants will have to step in in the coming years when the sun and wind supply little. They therefore keep German CO2 emissions high. And: the price of electrical energy is likely to rise even further in the future, if only because of the grid fees.

https://www.tichyseinblick.de/kolumn...-energiewende/

Jimbuna · 08-04-23, 06:22 AM

The quicker these idiots are locked up the better.

Quote:

Greenpeace activists who scaled Rishi Sunak's North Yorkshire home in protest against the government's decision to expand North Sea oil drilling have been released on police bail.

Four people were arrested after they used ladders and ropes to climb on the grade II-listed manor house in Kirby Sigston and drape oil-black fabric over the property.

A fifth activist was later arrested on suspicion of causing a public nuisance in connection with the stunt.

In an update this morning, North Yorkshire Police said: "All five suspects who were arrested following the protest in Kirby Sigston on 3 August, have been released on conditional police bail to allow for further enquiries to be carried out.

"The investigation remains ongoing."
https://news.sky.com/story/greenpeac...-home-12932858

em2nought · 08-04-23, 07:00 AM

Quote:

Originally Posted by Dargo

Researchers have found a way to turn cement into a supercapacitor.

I think they mention the problem might be that doing this effects the strength of the concrete? Maybe they could do it to Roman concrete? I think somebody found the secret to Roman concrete recently didn't they? Heat during the process, and chunks of soft lime in the mix that fill any capillaries created by water getting in the concrete over time?

Skybird · 09-29-23, 02:31 PM

This could become a very big problem, not just for France but for most of Europe and especially Germany as well.

https://www-dw-com.translate.goog/de..._x_tr_pto=wapp

The German power imports have grown by a factor equal to the loss of the nuzclear power reatcor sin Germany. Without the French power imports - for high price - the situation in Germany will first become interesting and then soon afterwards: dangerous.

Catfish · 09-29-23, 02:57 PM

Quote:

Originally Posted by em2nought

I think they mention the problem might be that doing this effects the strength of the concrete? Maybe they could do it to Roman concrete? I think somebody found the secret to Roman concrete recently didn't they? Heat during the process, and chunks of soft lime in the mix that fill any capillaries created by water getting in the concrete over time?

Yes there are different methods, one is using the original roman opus caementicum with puzzolanes and a lot of other stuff, some only in traces.
You will not want to pay for this today! Maybe some plastics can be used but anyway this has not be researched in a way to practically use it

Skybird · 10-27-23, 05:56 PM

I just read that somewhere in rural Bavaria a small community has built itself a so-called "super battery". These are six above-ground larger buildings in small house format, with the capacity to supply 10,000 households with electricity for one (1) hour in the event of a dark period, when neither the sun is shining nor the wind is blowing.

Ten thousand households. One hour.

The day has 24 hours. Germany has 41 million households. And industry. And hospitals. Airports. Railroads. Etc. Etc. Etc.

And dark periods can last not just for an hour, but for several days. A week. Ten days. Occurs every winter on average, depending on the year, 1-3 times.

So, to supply 10,000 households not for one hour, but for ten days, we multiply these six battery houses by 240. Projected to 41 million households, we multiply again by 4100. So 6x240x4100. Then we are with over 5.9 million such battery houses, which would have to stand around in Germany. Additonally to the other buildings, and 75,000 windmill towers. The industrial and economic supply and infrastructure we ignore once, those come otherwise on top of the total count.

At the moment there are about 19.5 million residential buildings in Germany.

Germany.

In the 2023 World Competitive Ranking, Germany just has dropped from rank 15 to 22. I predict that is far from being the end of the downward journey. Add other problems like demographics, inadequate school education, desintegration of infrastructure systems...

Dargo · 11-03-23, 01:39 PM

Ukraine has the largest underground gas storage in Europe with capacity to accommodate 31 billion cubic meters of gas, according to Naftogaz CEO Chernyshov. With EU gas storage nearly full, some companies are turning to Ukraine to store excess gas. War notwithstanding, European companies parked $1 billion worth of gas in Ukraine. Chernyshov noted that Russian gas transit via Ukraine will end in 2024. It could surprise many here, but Russian gas continues to transit Ukraine irrespective of war. In January-October 2023, Russian forces damaged 128 gas infrastructure facilities across Ukraine, according to Naftogaz, but industry insiders say that no underground storage has been hit. Ukraine's underground storage is concentrated in west.

em2nought · 11-03-23, 10:40 PM

Maybe all our empty shopping malls will become great big batteries. Maybe our malls will be the equivalent of the pyramids if we're still around in 3000 years. They'll be debating what the malls might have been before they became batteries.

mapuc · 11-04-23, 09:47 AM

Quote:

The long trek toward practical fusion energy passed a milestone last week when the world’s newest and largest fusion reactor fired up. Japan’s JT-60SA uses magnetic fields from superconducting coils to contain a blazingly hot cloud of ionized gas, or plasma, within a doughnut-shaped vacuum vessel, in hope of coaxing hydrogen nuclei to fuse and release energy.

https://www.science.org/content/arti...fusion-reactor

Markus

Skybird · 01-14-24, 05:46 PM

What battery shall it be for you? Alkaline? Metal Hydrid? Litium? Nuclear...?

I really wish this to become true, if only for havign Greens all over the place falling into deep depression and laughing about their mimimi.

https://www.notebookcheck.net/Westin....787535.0.html

Mind you, small reactors are in use since decades on SSN and SSBN submarines and Russian ice breakers.

Dargo · 01-22-24, 01:37 PM

Gas prices in Europe fell by almost 60% in 2023 from their peak in 2022, and they continue to decline mainly due to record gas reserves and renewable energy sources, Bloomberg reported.

Despite the escalation of the Palestinian-Israeli conflict in October last year, and the associated disruptions to international supply via the Red Sea, LNG prices in Europe continue to fall. Bloomberg attributed the occurrence to record gas reserves, broad investment in renewable energy, and slow economic growth, which limits energy demand in large industrialized countries.

However, there is a risk that the decrease will end and European countries, as well as Japan, the United States, and China, may face another crisis.

"Just by looking at prices, it seems that the crisis is over," Bloomberg quoted Balint Koncz, head of gas trading at MET International in Switzerland. "However, we are now reliant on global factors, which can change rapidly."

Despite large international investments in the creation of LNG transits, most of the new capacity will not appear until 2025 and 2026. And the agreement on the transit line supplying gas from Russia through Ukraine to the countries of Western and Central Europe expires at the end of 2024, with no information on its extension. Closing the transit line will reduce gas supplies. In addition, increasing extreme weather events are straining energy systems and could increase demand for LNG.

07-30-23, 07:36 AM	#363
Jimbuna Chief of the Boat Join Date: Feb 2006 Location: 250 metres below the surface Posts: 181,198 Downloads: 63 Uploads: 13	Shell has revealed a big fall in the second quarter of its financial year, largely due to energy prices plunging from their Russia-Ukraine war peak. The oil and gas major reported net profits of just over $5bn (£3.9bn) for the three months to the end of June. The figure represents a drop of more than 50% on the $11.5bn achieved in the same period last year and fell short of analysts' estimates. It was also well down on the $9.65bn sum the company raked in during the first three months of the year. Shell said it was, nevertheless, rewarding shareholders with a further share buyback and hike to its dividend. __________________ Wise men speak because they have something to say; Fools because they have to say something. Oh my God, not again!! GWX3.0 Download Page - Donation/instant access to GWX (Help SubSim)

08-04-23, 05:58 AM	#365
Skybird Soaring Join Date: Sep 2001 Location: the mental asylum named Germany Posts: 40,496 Downloads: 9 Uploads: 0	It must be frustrating for them, they try so hard to make the addition of 2 and 2 appear as 5, but they just dont get there. Tichy's Einblicke - https://www.tichyseinblick.de/kolumn...-energiewende/ - writes: ---------------- Hectic expansion is of no use: Solar and wind in the red in 2023 In the first half of the year, renewable energy plants produced less than in the same period last year - despite the construction of more than 500 new wind turbines, for which Robert Habeck praises himself. Other data also show the absurdity of his energy transition. When an ARD journalist recently asked him on Tagesthemen where the electricity for the planned production of green hydrogen would actually come from, Economics Minister Robert Habeck answered confidently: The expansion of renewable energies is now really making rapid progress. So there is no reason to worry. The Green politician likes to be filmed in videos of the ministry in front of wind farms that have just been inaugurated. The message is that more and more electricity is coming from wind and solar parks. And the minister is personally pushing this development. However, the reality - and here the Tagesschau editor didn't bother to check - looks somewhat different. Although, according to the statistics of Deutsche WindGuard, 551 new wind power plants with a total capacity of 2.403 gigawatts and photovoltaic plants with a capacity of 7.5 gigawatts were added across Germany in 2022, the generation of wind and solar power did not increase in the first half of 2023 compared to the same period of the previous year - but rather decreased. And by two terawatt hours. The Federal Environment Agency states: "In the first half of 2023, despite the increased addition of new photovoltaic and wind energy plants, about one percent less electricity was generated from renewable energies (just under 136 terawatt hours (TWh)) than in the first six months of the previous year (just under 138 TWh)." This does not come as a surprise: installed capacity does not have all that much to do with actual generation. In weather-dependent electricity production, it is the wind and sun situation that decides, not what the plants could theoretically deliver. Although this should also be known in the Federal Ministry of Economics, Robert Habeck repeatedly operates with misleading capacity or percentage figures. In fact, the share of renewable energies in electricity generation increased in 2023 compared to the previous year. But this is simply because total electricity consumption declined in the first six months of this year due to the poor economic situation. So if you look at the absolute figures here and there, you get a very different picture than what the federal government wants to publicly disseminate. Since large-scale industrial storage facilities are lacking for the foreseeable future, Habeck plans to build a gas-fired power plant capacity totalling 30 gigawatts by 2030 in order to secure the electricity supply despite fluctuating feed-in from renewables on the one hand and the planned shutdown of coal-fired power plants on the other. The catch is that so far there are not even rough plans for these power plants, which in the ministry's imagination will serve as gap fillers from time to time in the future. That, in turn, is because it is completely unclear who is to operate them. Gas-fired power plants, which are only allowed to run for 1500 or 2000 hours a year on an auxiliary basis, cannot finance themselves by selling electricity. They would therefore need massive state subsidies. How this is to be done, how much it will cost - all this is so far in the typical Habeck fog. Paradoxically, the German energy transition system also runs into serious problems when the summer sun is shining and the wind is blowing well. Then electricity from wind and solar plants often cover demand alone on days when consumption is low, such as on Sundays in July. On 2, 16 and 23 July, renewables each generated up to 49 gigawatt hours during the day. And on the last Sunday of the month, the 30th, they managed it almost without conventional power plants. The problem is the lack of storage capacity. On all Sundays in July, the supply of electricity therefore exceeded the demand, and the price of electricity on the exchange tipped into negative territory. Particularly drastic on 2 July: on that day, someone who bought a megawatt hour from Germany abroad got an extra 500 euros at certain hours. For operators of pumped-storage plants in Austria, for example, this has been opening up a splendid business field for quite some time: if Germany doesn't know what to do with its solar and wind power, they take it plus a disposal premium - in order to sell the energy back to Germany at a high price when the electricity price turns positive again. The disposal fee of 500 euros per megawatt hour ends up in the grid fee bill - and thus with every German electricity customer. In some regions, grid fees already account for up to a third of the electricity price. So the hectic expansion of wind and solar energy not only does not bring a plannable increase in generation - it also makes electrical energy drastically more expensive. Even if the promised hydrogen storage facilities do eventually come, they will not ease the cost situation. This is because a good 60 percent of the energy is lost between the storage and withdrawal of electricity surpluses. Although this energy is occasionally available for zero or negative prices on the stock exchange, it must first be paid for with fixed feed-in tariffs. These rates are currently around 4 cents for wind power and up to 7.8 cents per kilowatt hour for solar plants. Conclusion: In all likelihood, coal-fired power plants will have to step in in the coming years when the sun and wind supply little. They therefore keep German CO2 emissions high. And: the price of electrical energy is likely to rise even further in the future, if only because of the grid fees. https://www.tichyseinblick.de/kolumn...-energiewende/ __________________ If you feel nuts, consult an expert.

09-29-23, 02:31 PM	#368
Skybird Soaring Join Date: Sep 2001 Location: the mental asylum named Germany Posts: 40,496 Downloads: 9 Uploads: 0	This could become a very big problem, not just for France but for most of Europe and especially Germany as well. https://www-dw-com.translate.goog/de..._x_tr_pto=wapp The German power imports have grown by a factor equal to the loss of the nuzclear power reatcor sin Germany. Without the French power imports - for high price - the situation in Germany will first become interesting and then soon afterwards: dangerous. __________________ If you feel nuts, consult an expert.

10-27-23, 05:56 PM	#370
Skybird Soaring Join Date: Sep 2001 Location: the mental asylum named Germany Posts: 40,496 Downloads: 9 Uploads: 0	I just read that somewhere in rural Bavaria a small community has built itself a so-called "super battery". These are six above-ground larger buildings in small house format, with the capacity to supply 10,000 households with electricity for one (1) hour in the event of a dark period, when neither the sun is shining nor the wind is blowing. Ten thousand households. One hour. The day has 24 hours. Germany has 41 million households. And industry. And hospitals. Airports. Railroads. Etc. Etc. Etc. And dark periods can last not just for an hour, but for several days. A week. Ten days. Occurs every winter on average, depending on the year, 1-3 times. So, to supply 10,000 households not for one hour, but for ten days, we multiply these six battery houses by 240. Projected to 41 million households, we multiply again by 4100. So 6x240x4100. Then we are with over 5.9 million such battery houses, which would have to stand around in Germany. Additonally to the other buildings, and 75,000 windmill towers. The industrial and economic supply and infrastructure we ignore once, those come otherwise on top of the total count. At the moment there are about 19.5 million residential buildings in Germany. Germany. In the 2023 World Competitive Ranking, Germany just has dropped from rank 15 to 22. I predict that is far from being the end of the downward journey. Add other problems like demographics, inadequate school education, desintegration of infrastructure systems... __________________ If you feel nuts, consult an expert.

11-03-23, 10:40 PM	#372
em2nought Ocean Warrior Join Date: Mar 2004 Posts: 3,269 Downloads: 0 Uploads: 0	Maybe all our empty shopping malls will become great big batteries. Maybe our malls will be the equivalent of the pyramids if we're still around in 3000 years. They'll be debating what the malls might have been before they became batteries. __________________ Looks like we need a Lemon Law for Presidents now! DNC sold us a dud, and they knew it. Last edited by em2nought; 11-04-23 at 06:08 AM.

01-14-24, 05:46 PM	#374
Skybird Soaring Join Date: Sep 2001 Location: the mental asylum named Germany Posts: 40,496 Downloads: 9 Uploads: 0	What battery shall it be for you? Alkaline? Metal Hydrid? Litium? Nuclear...? I really wish this to become true, if only for havign Greens all over the place falling into deep depression and laughing about their mimimi. https://www.notebookcheck.net/Westin....787535.0.html Mind you, small reactors are in use since decades on SSN and SSBN submarines and Russian ice breakers. __________________ If you feel nuts, consult an expert.