Search found 915 matches

by BritDownUnder
Thu Apr 22, 2021 10:17 pm
Forum: Electrical, Theory and Practice
Topic: Grid gravity storage
Replies: 5
Views: 67

Re: Grid gravity storage

Thinking about the 12,000 tonne weight. A 2 inch (or 52mm if you prefer) diameter steel cable has a safe load of about 30 tonnes... It's not one big weight, lots of smaller ones dropping in series. Now I see. 24 weights so 500 tonnes each. So four 2 inch cables might just do it without considering ...
by BritDownUnder
Thu Apr 22, 2021 10:38 am
Forum: Electrical, Theory and Practice
Topic: Grid gravity storage
Replies: 5
Views: 67

Re: Grid gravity storage

Definitely worthy of further investigation. I wonder whether the diameter of a typical mine shaft may be a limiting factor in making the weight very long. Also whether mine shafts in the UK were capped or filled with stuff. I can imagine it would have been very tempting to drop a lot of rubbish down...
by BritDownUnder
Tue Apr 20, 2021 10:03 pm
Forum: Climate Change
Topic: "78% cut in UK carbon emissions by 2035"
Replies: 10
Views: 81

Re: "78% cut in UK carbon emissions by 2035"

I would like to know if the UK counts imports of goods manufactured overseas as part of the carbon budget. I would guess that a fairly substantial part of the carbon emission reductions are due to this alone. I know there has been a lot of progress in solar and wind installations but the fact of clo...
by BritDownUnder
Tue Apr 20, 2021 11:38 am
Forum: Permaculture
Topic: "instant" hedge
Replies: 2
Views: 58

Re: "instant" hedge

I did something, not quite similar but on the same lines. I had some aluminium railings outside my house separating the garden from the street. Just after I moved into my house about 10 years ago during the night a passing drunk had tried to perform, quite successfully it turned out, a Bruce Lee kar...
by BritDownUnder
Mon Apr 19, 2021 10:43 pm
Forum: General Discussion
Topic: New coronavirus in/from China
Replies: 8332
Views: 260012

Re: New coronavirus in/from China

An article on CNN last night saying Delhi area is running out of oxygen, people making appeals on Facebook. People trying to point the finger at major gatherings such Kumb Mehla (probably misspelt).

Right decision taken a bit late. Could be descriptive of the whole Covid saga.
by BritDownUnder
Mon Apr 19, 2021 10:39 pm
Forum: General Discussion
Topic: Looks like a potentially severe drought coming
Replies: 21
Views: 344

Re: Looks like a potentially severe drought coming

Solar farms take all the light (and maybe heat too) from an area so people, especially poor churchgoing people, may freeze to death. I have even heard it said that cows will spontaneously abort their calves when the shadow of such an abomination falls across them. It's worse than that, the electric...
by BritDownUnder
Mon Apr 19, 2021 10:31 am
Forum: General Discussion
Topic: Looks like a potentially severe drought coming
Replies: 21
Views: 344

Re: Looks like a potentially severe drought coming

Solar farms take all the light (and maybe heat too) from an area so people, especially poor churchgoing people, may freeze to death. I have even heard it said that cows will spontaneously abort their calves when the shadow of such an abomination falls across them. I did hear that a town in the deep ...
by BritDownUnder
Mon Apr 19, 2021 3:46 am
Forum: General Discussion
Topic: Looks like a potentially severe drought coming
Replies: 21
Views: 344

Re: Looks like a potentially severe drought coming

Why didn't they just pump sea water up to the top to power the funicular. It would use the same amount of energy. I'd be guessing it is a double railway that has two cars linked together with a cable around a wheel at the top. So one car is going up as the other goes down acting as a counterweight....
by BritDownUnder
Sun Apr 18, 2021 9:10 am
Forum: General Discussion
Topic: Looks like a potentially severe drought coming
Replies: 21
Views: 344

Re: Looks like a potentially severe drought coming

10mm of rain just yesterday. I collected about 2000 litres of rainwater in the tanks so I saved some sea level rise. I would say it has been just about as wet as I have known it.

Could be random fluctuations or could be jetstream or gulfstream beginning to change due to global warming.
by BritDownUnder
Sat Apr 17, 2021 10:18 am
Forum: Other Alternatives
Topic: Cruachan Hydroelectric Power Station removes F-gas
Replies: 6
Views: 183

Re: Cruachan Hydroelectric Power Station removes F-gas

I have no "hands-on" black start experience but I have heard from others on two occasions. Once, in New Zealand, I had a tour of two power stations during a job interview, one of which was a hydro station of 4 x 25MW units. It had two small hydro generators as well which were approx 250kw ...
by BritDownUnder
Fri Apr 16, 2021 12:28 am
Forum: General Discussion
Topic: New coronavirus in/from China
Replies: 8332
Views: 260012

Re: New coronavirus in/from China

I think there is probably a significant amount of revenue raising in such 'government ideas for the public safety' as well, even MOTs as well as the more obvious income tax. I think that stamp duty was originally meant to cover the cost of the stamping of legal documents by the government but can no...
by BritDownUnder
Wed Apr 14, 2021 10:07 am
Forum: Nuclear Power
Topic: UAE’s First Nuclear Unit Enters Commercial Operation
Replies: 0
Views: 45

UAE’s First Nuclear Unit Enters Commercial Operation

UAE’s First Nuclear Unit Enters Commercial Operation link . A bit of a difference from the UK's experience with HP3. Quote from Wikipedia It consists of four APR-1400 nuclear reactors (one operating, three mostly completed). Total capacity is 5,600 MW[1] which is intended to supply up to 25% of UAE'...
by BritDownUnder
Tue Apr 13, 2021 11:57 pm
Forum: General Discussion
Topic: New coronavirus in/from China
Replies: 8332
Views: 260012

Re: New coronavirus in/from China

I would say that international travel is now a thing of the past, perhaps I should say international travel made on a whim. Countries (like Brazil) and maybe even whole continents (like Africa or the Indian subcontinent) will now be simply cut off from access to the UK except via quarantine, not in ...
by BritDownUnder
Sun Apr 11, 2021 4:15 am
Forum: Other Alternatives
Topic: Cruachan Hydroelectric Power Station removes F-gas
Replies: 6
Views: 183

Re: Cruachan Hydroelectric Power Station removes F-gas

I was impressed by the mural that is in the turbine hall at this pumped storage power station. Unbeknownst (to me anyway) it performs an essential black start function for the UK grid. https://stangeradventures.files.wordpress.com/2018/10/masterrock02.jpeg On a sadder note a surprisingly large numbe...
by BritDownUnder
Thu Apr 08, 2021 11:14 pm
Forum: General Discussion
Topic: Greer absolutely nails it....
Replies: 140
Views: 1799

Re: Greer absolutely nails it....

I say buy as much land as possible. As Abraham Lincoln said (well my father said that he said it) "invest in land - they don't make it anymore". You can always sell some of it off in small packages to other people who want a similar lifestyle, they could even put yurts on it!!!! Need plan...