101–110 of 146 posts
Earlier quoted context omitted.
It should at least be heat pumps...
heat pump are highly inefficient if outside temp gets below ~5 degC and that's what happening right now on most of Europe ( incl. southern europe, I saw spain mentionned here ... )
Earlier quoted context omitted.
> Yet governments insist newbuilds to be on electric heating Not only that, but they insist that almost all vehicle transportation should be electric in maximum 10-15 years.
Not quite, they’re insisting all all new vehicles will be electric. Even at that point it’ll still be decades before electric vehicles make up the majority of road traffic.
Earlier quoted context omitted.
So you want people to use gas cars and gas-powered boilers to heat their home? Or should we make that more expensive as well so we can make sure more people spend more time with heating off in the winter?
Isn't a gas-powered heater more efficient than an electric heater powered by an LNG plant? Electric heating is pretty ineffective, although heat pumps can work well.
The video is 10 years old, but depicts a box with GPS timekeeping, and sampling the normal outlet, with Ethernet to report to the server. https://www.youtube.com/watch?v=9Vt2OlVoBJc
One of the best real time views, is this view of the phase across the US. http://fnetpublic.utk.edu/anglecontour.html
Time to start deploying big batteries across the grid at substations. A shipping container here and there would work wonders.
I want to get rooftop solar and a battery pack for my house. But I really don't want to a lithium battery attached to my house. I feel like there'd be a good business in selling battery 'space' in a big fire proof box down the street that I could then offset my meter against. Wouldn't even need to be in my street if I could get the offset.
Earlier quoted context omitted.
Not quite, they’re insisting all all new vehicles will be electric. Even at that point it’ll still be decades before electric vehicles make up the majority of road traffic.
Do people really keep their vehicles for decades?
What you want to know is the average life of a vehicle (or average age of the fleet), not the average period of ownership.
I'm sure that varies by country; IIRC Germany has punative taxes on registering old cars, so their average age should be a lot less than in the US where registration tax usually is based on value, so goes down as the vehicle ages. I seem to recall average fleet age of about 20 years in the US.
Why aren't power outages in California and Europe partly due to the adoption of solar and wind?
That would be politically inconvenient.
Earlier quoted context omitted.
I live in a tropical climate so I'm completely clueless on heating systems but has municipal steam heating been completely abandoned? It seems more efficient than both individual gas or electric heaters once you take conversion loses into account
Would say that almost all cities / larger towns in Sweden has municipal heating via hot water. And acc. to wikipedia around half of all housing units in Denmark, Sweden and Finland has municipal heating.
"System split registered in the synchronous area of Continental Europe – Incident now resolved"
https://www.entsoe.eu/news/2021/01/08/system-split-registere...
Earlier quoted context omitted.
This is fascinating to me. What is the mechanism by which this happens? The added load causes an average slow down across the population of actual spinning generator bits?
That's exactly right. Extra electrical draw on the grid (or a loss of electrical production elsewhere) causes the turbines in power plants to physically spin slower due to increase load on each turbine. An (imperfect) analogy would be if you and a friend were biking up a hill on a tandem bike. If a third person hopped on the handle bars (or your friend stopped pedaling) the bike's wheels would slow down, assuming you…