Gwypaas

62 ms·

691.
by Gwypaas 5y ago
Give it a year or two and I bet there will be unskippable ads between the stories.
692.
by Gwypaas 5y ago
Pressing the menu button on the post and then hide I got the choice to hide suggested posts. Though in true Facebook fashion only for 30 days and not permanently.
693.
by Gwypaas 5y ago
Regarding the terminus stations, in Europe many central stations are being converted, or where built as, through stations. This allows for much higher throughput since trains don't have to turn around.
694.
by Gwypaas 5y ago
It's not only plutonium, it's an unholy mess of everything from completely inert materials to extremely hazardous. Nuclear fission is not at all equivalent to a nice chemical reaction where A + B = C. See this graph for the spread
695.
by Gwypaas 5y ago
That announcement of 150 reactors in China is no real change to the long term plans either. Still simply keeping the option barely open which is very sensible to do when you're such a huge economy, even if it comes from subsidies. In
696.
by Gwypaas 5y ago
Not really, nuclear power is one of those things which has had a negative learning curve. The costs of the French nuclear scale-up: A case of negative learning by doing https://www.sciencedirect.com/science/article&#
697.
by Gwypaas 5y ago
They still increase the safety by limiting the speed in for example an exposed intersection. On the other hand you can go the average speed route instead. https://en.wikipedia.org/wiki/Speed_limit_enforcement#Averag...
698.
by Gwypaas 5y ago
It is the last death throes of an industry coupled with some tech minded people thinking it's controversial and cool, even though the tech in reality is old and boring. The "silver bullet" to fix climate change, much like we
699.
by Gwypaas 5y ago
60-64% capacity factor, 14MW. https://www.ge.com/renewableenergy/wind-energy/offshore-wind...
700.
by Gwypaas 5y ago
Don't forget the 31.42% payroll tax that's hidden from your salary but a tax right on it. A salary of 50k SEK costs the employer 65.7k SEK on their books, which is what actually matters. The actual marginal taxrate flowing from yo
701.
by Gwypaas 5y ago
Why compare against coal? It's all about to be phased out simply due to the cost of the steam side, which nuclear shares. Compare against wind and pv.
702.
by Gwypaas 5y ago
Military reactors tend to use weapons grade fuel. Would not want to spread that across all unstable regions of the world. So quite the different beasts compared to the civilian side. https://web.archive.org/web/20070209
703.
by Gwypaas 5y ago
A negative learning curve coupled with Chernobyl doesn't create a very compelling business case right at the end of the 80s. https://www.sciencedirect.com/science/article/abs/pii/S03014...
704.
by Gwypaas 5y ago
In the spaces where waves and wakes make a difference the tolerances are larger. The one exception is for example smaller commuter ferries without a ramp, then you might have to time it as you say. Wind and current doesn't really matte
705.
by Gwypaas 5y ago
All depends on how far you go with your maneuvering capabilities, which is simply related to costs. Dynamic positioning [0] has existed for a long while and has now moved down even to small dual engined boats [1], on the other hand it requi
706.
by Gwypaas 5y ago
Now add an error to foo and have x=0 as a valid return value, or even worse, having to deal differently with different errors.
707.
by Gwypaas 5y ago
The navies also use fuel enriched up to the level of a nuclear weapon, supposedly about 97% for the US navy [0] making more energy dense designs possible. Weapons-grade are usually said to be above 90%. Wouldn't want those reactors pla
708.
by Gwypaas 5y ago
Almost, the hub is still a bit more than 50m below but the rotor points above. Modern off-shore ones are true monsters. For example this one, rotor diameter 220m, highest point 248m. https://www.ge.com/renewableenergy/w
709.
by Gwypaas 5y ago
It's all about the geographical decoupling with local storage and smart consumers to smooth the loads. For example tying the charging of your electric car while it's parked to the current price. Spatial and temporal arbitrage of e
710.
by Gwypaas 5y ago
The wind also ceases to exist at night right?
711.
by Gwypaas 5y ago
Going by the German energy usage there's no replacement using fossil plants being done. It's all displaced by cheaper renewables, especially coal and old nuclear plants. https://www.cleanenergywire.org/sites/d
712.
by Gwypaas 5y ago
Wholesale energy is priced by the marginal cost, gas peaker plants come in at $150 - $200/MWh so not a surprising price to level out on. https://www.lazard.com/perspective/levelized-cost-of-energy-...
713.
by Gwypaas 5y ago
Solar + 4 hours of storage clocking in at $40/MWh in ideal conditions. Substitute for windpower and some worse conditions and nuclear energy still look awful from a cost perspective. https://www.energy-storage.news/deve
714.
by Gwypaas 5y ago
Who compares against fossil plants nowadays? Except wanting to put a carbon tax on them to account for that issue you mention. Truly, it's new built nuclear compared compared to renewables, storage and long-distance distance transmissi
715.
by Gwypaas 5y ago
Is that why it is impossible to insure a nuclear power plant on the private market?
716.
by Gwypaas 5y ago
As a result of the Chernobyl reactor accident, certain species of mushrooms and wild game are still highly contaminated with caesium-137 in some areas of Germany. https://www.bfs.de/EN/topics/ion/environment
717.
by Gwypaas 5y ago
They are not affordable. That's why they are being replaced by gas plants and renewables all over the place.
718.
by Gwypaas 5y ago
That's capacity, the interesting side is usage which as you can see also has declined, while total capacity has increased. https://www.cleanenergywire.org/sites/default/files/styles/g...
719.
by Gwypaas 5y ago
Regarding reliability, in perfect conditions solar + 4 hours storage are starting to bid at $40 per MWh [0]. Nuclear is well above $100 per MWh [0]: https://www.energy-storage.news/developer-8minute-says-more-...
720.
by Gwypaas 5y ago
Does anyone have real source or more information regarding the cost of the steam side of a nuclear power plant? Combined Cycle Gas has taken over due to the easy mechanical energy from the Brayton cycle reducing the size of the steam side b

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