Search found 7980 matches

by adam2
Fri Jan 22, 2021 5:55 pm
Forum: General Discussion
Topic: New coronavirus in/from China
Replies: 7915
Views: 247937

Re: New coronavirus in/from China

I have just returned from a rush visit to a neighbour who is reliant on an oxygen machine at home, not working due to a power cut. The backup oxygen cylinder for just such an eventuality is "yet to be delivered" I have loaned a large inverter and an extension lead to power the oxygen machi...
by adam2
Thu Jan 21, 2021 1:08 am
Forum: Climate Change
Topic: flood watch
Replies: 477
Views: 94845

Re: flood watch

The flooding underway in Manchester and surrounding districts looks worth than usual, a couple of thousand evacuated so far.
https://www.bbc.co.uk/news/uk-55743246
by adam2
Wed Jan 20, 2021 8:24 pm
Forum: Transport
Topic: Are we on the brink of an electric car revolution?
Replies: 461
Views: 78850

Re: Are we on the brink of an electric car revolution?

At 800 volts, 650 Kw would be over 800 amps, rather than the less than one amp suggested.

That sort of power needs a dedicated transformer with 11 Kv or higher input.
by adam2
Wed Jan 20, 2021 1:50 pm
Forum: General Discussion
Topic: New coronavirus in/from China
Replies: 7915
Views: 247937

Re: New coronavirus in/from China

I wonder if we would have enough work for a dedicated Civil Defence organisation to do. With global warming increasing we might well have in the future but for the last twenty years? Even fire brigade numbers have been run down as they don't have so much work to do now. It makes sense to possibly b...
by adam2
Wed Jan 20, 2021 1:08 pm
Forum: Hydrocarbons
Topic: Coal
Replies: 15
Views: 9741

Re:

I know of a family in London who heat with coal derived smokeless fuel. Two large houses made into one home with fifteen bedrooms (they foster loads of children, usually about a dozen) They pay about £6 per 25 kilo bag, after discount for bulk buying. They have a modern multifuel boiler for winter...
by adam2
Wed Jan 20, 2021 12:38 pm
Forum: General Discussion
Topic: New coronavirus in/from China
Replies: 7915
Views: 247937

Re: New coronavirus in/from China

Agree, the UK used to have a proper civil defence organisation, but when this was closed down in all but name, the fire brigades were re branded by adding "and civil defence" to the name. A proper civil defence organisation holds very large stocks of often basic and low technology equipmen...
by adam2
Tue Jan 19, 2021 7:02 pm
Forum: Hydrocarbons
Topic: Coal
Replies: 15
Views: 9741

Re: Coal

Many furnaces can be heated with electricity, including those for recycling metals, for melting glass, for heat treating metal tools, and for producing pottery.
At present though coke is unavoidable for iron and steel production, as distinct from recycling which can be done in an electric arc furnace.
by adam2
Tue Jan 19, 2021 6:40 pm
Forum: General Discussion
Topic: New coronavirus in/from China
Replies: 7915
Views: 247937

Re: New coronavirus in/from China

In my view, this country needs a PROPER civil defence organisation, possibly run as a branch of the armed forces. Such an organisation could hold substantial stocks of emergency supplies, including but not limited to. Tents, for emergency housing, field hospitals, and morgues. Camp beds, blankets. S...
by adam2
Tue Jan 19, 2021 6:12 pm
Forum: Hydrocarbons
Topic: Coal
Replies: 15
Views: 9741

Re: Coal

In general, I agree, but in the specific case of iron and steel production I am not aware of any way to produce significant iron and steel without coke derived from coal. The coke is not simply a heat source, but a vital part of the basic chemical reaction whereby iron oxide is reduced to iron. Char...
by adam2
Tue Jan 19, 2021 5:51 pm
Forum: Hydrocarbons
Topic: Coal
Replies: 15
Views: 9741

Re:

New coal mine in Cumbria looks set to open: https://www.in-cumbria.com/news/18012355.breaking-west-cumbrian-coal-mine-plan-gets-green-light-says-local-mp/ Now approved. https://www.bbc.co.uk/news/uk-politics-55721919 . Perhaps surprisingly, I welcome this decision. I remain opposed to coal burning ...
by adam2
Tue Jan 19, 2021 5:27 pm
Forum: Transport
Topic: Are we on the brink of an electric car revolution?
Replies: 461
Views: 78850

Re: Are we on the brink of an electric car revolution?

Certainly impressive, but we should remember the challenges of charging so fast. To charge a 50KWH battery in five minutes would require a charger input of about 630 KWH, presuming 2.5% losses in the charger and another 2.5% losses in the battery. That is 15 Kw of heat to remove from the charger, an...
by adam2
Tue Jan 19, 2021 4:22 am
Forum: Climate Change
Topic: Have we reached peak CO2 emissions yet?
Replies: 8
Views: 202

Re: Have we reached peak CO2 emissions yet?

Atmospheric methane is a cause of considerable concern. It is a very potent greenhouse gas, much worse than carbon dioxide, and when it gradualy oxidises by natural processes, it adds to the existing carbon dioxide problem. Sources include the leakage or escape of natural gas, the natural decomposit...
by adam2
Sun Jan 17, 2021 3:15 pm
Forum: Transport
Topic: "Blue Sky Thinking" about Heathrow
Replies: 97
Views: 37557

Re: "Blue Sky Thinking" about Heathrow

The recent ruling about the third runway also sends out the message that promises or assurances by "the authorities" are worthless. Simply change the way in which the law is applied such that "no third runway" turns into "a third runway is fine" No wonder that some anti...
by adam2
Sat Jan 16, 2021 10:16 am
Forum: News
Topic: Saudi Arabia to build 150km linear city
Replies: 10
Views: 142

Re: Saudi Arabia to build 150km linear city

A circular city would indeed reduce distances and facilitate walking or cycling between homes, workplaces, shops and other facilities in a small city. In the case of a larger city, then even a circular city will innvolve distances too great to walk. Observe the congested roads and public transport i...
by adam2
Fri Jan 15, 2021 5:27 pm
Forum: General Discussion
Topic: New coronavirus in/from China
Replies: 7915
Views: 247937

Re: New coronavirus in/from China

"UK to close all travel corridoors from Monday" Various media report.
I suspect that it wont mean ALL travel and that various exemptions and loopholes will exist.