Things you always wanted to know the answer to [Vol. 3]

Things you always wanted to know the answer to [Vol. 3]

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h0b0

7,597 posts

196 months

Saturday 20th January 2018
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Chestrockwell said:
I guess you are right it would just be a gimmick in today’s age, rich people would use it once to say they did and probably save 10 grand next time for a few extra hours.

I guess there isn’t that urgency to fly across the world any more as the president of the United States can tweet insults and threats to other countries from his mobile phone ha!

However as something for super rich people, a private supersonic jet would be interesting, I’m not asking for such a thing to be built so I can experience it, no, I just want to see what can be done with the knowledge & technology of today.

The Gulfstream 650 is near supersonic but is range limited. If you want to increase the range then the max speed is dropped to 85%.

227bhp

10,203 posts

128 months

Saturday 20th January 2018
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Willy Nilly said:
glazbagun said:
The Mad Monk said:
Boobonman said:
I’m sure trucks and buses smell different to new cars, which are different to old cars etc. Is it to do with a different burn of the fuel?
Different from. Different from.

Similar to, different from.

Try to remember.
So why do some diesels smell different compared to others?
Different emissions controls
Yes this ^^. Although to expand, the gasses now go through cats, particulate filters and many are mixed with a blend of Urea and water.

Given the question I can guess you aren't old enough to remember cars without emission controls and the eggy smell early cats used to emit when heated up suddenly.

talksthetorque

10,815 posts

135 months

Saturday 20th January 2018
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Bright Halo said:
How do blind people know their arse is clean after wiping?
Things they never mention a guide dog is trained to do.

gothatway

5,783 posts

170 months

Sunday 21st January 2018
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Speed addicted said:
Firstly, where are you going to store the energy?
You would need utterly vast banks of batteries or capacitors to store enough to be useful. Lots of cost and maintenance.
For turbines high up and close to the coast (e.g. on clifftops), what would be the economics of using the turbines to pump sea water up to a reservoir which could then be emptied to generate power at a later time?

Jonboy_t

5,038 posts

183 months

Sunday 21st January 2018
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gothatway said:
For turbines high up and close to the coast (e.g. on clifftops), what would be the economics of using the turbines to pump sea water up to a reservoir which could then be emptied to generate power at a later time?
It would take more energy to pump it up the hill than it would create when it came back down.

MartG

20,677 posts

204 months

Sunday 21st January 2018
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Jonboy_t said:
gothatway said:
For turbines high up and close to the coast (e.g. on clifftops), what would be the economics of using the turbines to pump sea water up to a reservoir which could then be emptied to generate power at a later time?
It would take more energy to pump it up the hill than it would create when it came back down.
Seems to work OK for Dinorwig Power Station

http://electricmountain.co.uk/

warp9

1,583 posts

197 months

Sunday 21st January 2018
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We've seen all manner of British TV chefs visiting the globe to find authentic dim sum, guacamole, paella etc etc.

Do quaint Cornish villages get Chinese TV crews sampling creme teas or French chefs visiting Cheddar? Or is the rest of the world not bothered by UK produce or do they not view cooking programs as we do?

Boobonman

5,654 posts

192 months

Sunday 21st January 2018
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I recently worked with a Japanese film crew who were over here making a film about our national obsession with tea. I think.

TTmonkey

20,911 posts

247 months

Sunday 21st January 2018
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MartG said:
Jonboy_t said:
gothatway said:
For turbines high up and close to the coast (e.g. on clifftops), what would be the economics of using the turbines to pump sea water up to a reservoir which could then be emptied to generate power at a later time?
It would take more energy to pump it up the hill than it would create when it came back down.
Seems to work OK for Dinorwig Power Station

http://electricmountain.co.uk/
Isn't Dinorwig okay used to respond to sudden spikes in demands?

Water is released when there's a sudden demand, generating a short term burst of electricity which is only required when everyone puts the kettle on at half time.

Then the water is pumped back up during low demand periods, using electricity that's being generated that's not actually required ... i.e., cheap rate time electricity.

It's not cost effective in terms of the cost of operating, but it fulfills the requirement for supplying near instant surges in demand.

deeen

6,080 posts

245 months

Sunday 21st January 2018
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Boobonman said:
I recently worked with a Japanese film crew who were over here making a film about our national obsession with tea. I think.
Pots and kettles!

kowalski655

14,640 posts

143 months

Sunday 21st January 2018
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talksthetorque said:
Bright Halo said:
How do blind people know their arse is clean after wiping?
Things they never mention a guide dog is trained to do.

TTmonkey

20,911 posts

247 months

Sunday 21st January 2018
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When Rod Hull decided to go up into his roof to adjust his TV Ariel in that storm, he slipped and fell to his death.....

Was that bird involved....?

And admit it, when you think about it, when you imagine him on that roof struggling in the wind to fix his ariel, the bird is there too, isn't it....?

Europa1

10,923 posts

188 months

Monday 22nd January 2018
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TTmonkey said:
When Rod Hull decided to go up into his roof to adjust his TV Ariel in that storm, he slipped and fell to his death.....

Was that bird involved....?

And admit it, when you think about it, when you imagine him on that roof struggling in the wind to fix his ariel, the bird is there too, isn't it....?
I don't know, but it strikes me the roof was a bloody silly place to try and fix his Atom. Leaves no room for an aerial. wink

V8mate

45,899 posts

189 months

Monday 22nd January 2018
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Europa1 said:
TTmonkey said:
When Rod Hull decided to go up into his roof to adjust his TV Ariel in that storm, he slipped and fell to his death.....

Was that bird involved....?

And admit it, when you think about it, when you imagine him on that roof struggling in the wind to fix his ariel, the bird is there too, isn't it....?
I don't know, but it strikes me the roof was a bloody silly place to try and fix his Atom. Leaves no room for an aerial. wink
Don't be silly He keeps his washing detergent in the loft. A right faff getting up there just to get one scoop of powder!

RATATTAK

11,019 posts

189 months

Monday 22nd January 2018
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How much does re-chroming cost ? ... say a rear bumper from this car

droopsnoot

11,933 posts

242 months

Monday 22nd January 2018
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Depends on where you go, how bad the original is, how much work is involved in getting a decent surface to plate on.

I'm aware of one place that charged roughly £350 for something like a TR4 bumper, and another that quoted £800-odd for the same job. I've just taken a door handle, a pair of door handle escutcheons, a gear level trim and got a quote of just over £50 all done.

227bhp

10,203 posts

128 months

Monday 22nd January 2018
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You've always wanted to know the answer to that? laugh

It depends on the state it's in, it's all in the prep.

gothatway

5,783 posts

170 months

Monday 22nd January 2018
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TTmonkey said:
Isn't Dinorwig okay used to respond to sudden spikes in demands?

Water is released when there's a sudden demand, generating a short term burst of electricity which is only required when everyone puts the kettle on at half time.

Then the water is pumped back up during low demand periods, using electricity that's being generated that's not actually required ... i.e., cheap rate time electricity.

It's not cost effective in terms of the cost of operating, but it fulfills the requirement for supplying near instant surges in demand.
That's what I was getting at, but specifically in the case of coastal wind turbines pumping seawater up when their (free-ish) wind-generated electricity isn't required on the grid. The volume would be a lot less than a proper power station, but apart from maintenance costs per running hour (obviously the plant's lifetime would be shorter), the power is free.

RATATTAK

11,019 posts

189 months

Monday 22nd January 2018
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227bhp said:
Nothing really, as usual
Many thanks for your informative comment
coffee

V41LEY

2,893 posts

238 months

Tuesday 23rd January 2018
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Why are UVPC double glazed replacement windows so expensive ?
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