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dpack



Joined: 02 Jul 2005
Posts: 45653
Location: yes
PostPosted: Sun Mar 17, 24 6:31 pm    Post subject: Reply with quote
    

reasonably safe, long-lasting insulation is a fossil rich process at the mo(rock wool etc)

it would still be better than not using it, done well it should last longer than the building

there are other options with a lower energy input short term, the current affordable alternative stuff does not last as well, some is far worse than that

joined up thought and deeds are required for both harvest and frugal use of energy

a very sideways example
as a "camping stove" i have used a variety of tech
from safety issues through specific fuel and bulky kit to just set it on fire

for a "stove" the multi fuel "wood" gasification thing is ideal, it does require some sort of fuel available, it took energy to create it
it uses very little fuel and that fuel is no carry/non-specific /green energy harvest

compare that to the primus i used in the 1970s. for starters, a rather interesting night trek would not have resulted in paraffin in most of the food and little fuel

a handful of charcoal would have been plenty to cook supper and dry the first of the plentiful sheep dung for the week

i will not mention blazes and bangs

i think my point is that modern kit and old principles can be a game changer

global "green" leccy infrastructure is not that dissimilar to making a safe, portable, fuel adaptable, gasification stove in thought
that a camping stove does not threaten fossil very much might be the big difference

Mistress Rose



Joined: 21 Jul 2011
Posts: 15663

PostPosted: Mon Mar 18, 24 7:54 am    Post subject: Reply with quote
    

We went in to see our next door neighbours set up yesterday. They have solar panels, a battery, heat pump and underfloor heating with a lot of insulation. They seem to have got through the winter all right on just the heat pump, but they do have trouble keeping it cool in summer so have had to put in blinds to keep the sun out of the back where they get full sun in large windows later in the day.

Our house is pretty well insulated downstairs because of its construction; it takes a long time to heat up, and a long time to cool down. The main part of the house gets warm in summer, but not uncomfortably so, and is quite comfortable in winter. We need to concentrate on insulation for the rooms in the roof, which would help a lot.

We have been thinking of solar panels for some time, but it seems now that the shadow of the pylon line dips the input a bit, but isn't too bad, so new ones could be of great use to us now.

dpack



Joined: 02 Jul 2005
Posts: 45653
Location: yes
PostPosted: Mon Mar 18, 24 9:02 am    Post subject: Reply with quote
    

some peeps really miss the point about need beating greed and thingy waving

they can make them, the world needs them

pile em high and sell em cheap, any colour you want so long as it is black etc
they are not drinking their own coolaid with the economics or addressing an existential threat from more fossil use

Mistress Rose



Joined: 21 Jul 2011
Posts: 15663

PostPosted: Tue Mar 19, 24 8:19 am    Post subject: Reply with quote
    

It is important that other countries develop their own battery technology, but as you say, we need batteries. One thing that worries me about being dependent on grid electricity is that if there is a power cut, everything goes off. Having lived through rolling power cuts in the 1970s, we have always tried to have at least heating, cooking and light that is not dependent on the grid. We have done it the old way with a wood fire with a flat top for cooking and candles (which I can make from our own beeswax), but having electricity stored in batteries would at least make sure that there it a backup if the power goes off for just a few hours at most.

jema
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 28140
Location: escaped from Swindon
PostPosted: Tue Mar 19, 24 8:41 am    Post subject: Reply with quote
    

CATL are saying the price of batteries will fall another 50% this year alone.
They really are only a "little known" company to people who haven't been paying attention, or rather the whole media structure that means people simply don't know about important stuff....
The drop in prices which will continue has really focused my mind on EV range.
Half the cost means considerably more range for your money, but it doesn't mean double the range as you are always lugging that battery around and making the car less efficient.
Buying used would I really want a current long range Tesla with 400 miles of range? Less efficient more tire particulates and costs and a range I would practically never need?
It's made me focus back down to 300 miles being a sweet spot.

jema
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 28140
Location: escaped from Swindon
PostPosted: Mon Apr 01, 24 6:00 am    Post subject: Reply with quote
    



Some latest statistics.

tahir



Joined: 28 Oct 2004
Posts: 45468
Location: Essex
PostPosted: Mon Apr 01, 24 12:58 pm    Post subject: Reply with quote
    

Went past a building site in Guangzhou last week, all electrical equipment; diggers, dumpers the whole lot. Brilliant how quiet it was, and of course the engine isn't running when the machine is idle so much better pollution wise.

On our latest building site we have a crane and goods lift so we already have (like most building sites) sufficient capacity on site to charge equipment overnight (if there was any available to rent).

I hope JCB get off the hydrogen bandwagon before the Chinese wipe them out

dpack



Joined: 02 Jul 2005
Posts: 45653
Location: yes
PostPosted: Mon Apr 01, 24 1:24 pm    Post subject: Reply with quote
    

considering jcb's choice of "sponsored" PM, the Chinese plant makers would get my business

Ty Gwyn



Joined: 22 Sep 2010
Posts: 4567
Location: Lampeter
PostPosted: Mon Apr 01, 24 2:17 pm    Post subject: Reply with quote
    

tahir wrote:
Went past a building site in Guangzhou last week, all electrical equipment; diggers, dumpers the whole lot. Brilliant how quiet it was, and of course the engine isn't running when the machine is idle so much better pollution wise.

On our latest building site we have a crane and goods lift so we already have (like most building sites) sufficient capacity on site to charge equipment overnight (if there was any available to rent).

I hope JCB get off the hydrogen bandwagon before the Chinese wipe them out


Sounds very Green,but the reality is,electricity supplied by over THOUSAND COAL FIRED POWER STATIONS.

tahir



Joined: 28 Oct 2004
Posts: 45468
Location: Essex
PostPosted: Mon Apr 01, 24 3:22 pm    Post subject: Reply with quote
    

Ty Gwyn wrote:
Sounds very Green,but the reality is,electricity supplied by over THOUSAND COAL FIRED POWER STATIONS.


And the fastest growing renewables capacity (301 GW in 2023) anywhere in the world backed up by grid scale storage

https://www.spglobal.com/commodityinsights/en/market-insights/latest-news/energy-transition/020824-infographic-china-solar-capacity-coal-electricity-renewable-energy-hydro-wind

tahir



Joined: 28 Oct 2004
Posts: 45468
Location: Essex
PostPosted: Mon Apr 01, 24 4:07 pm    Post subject: Reply with quote
    

This is a nice car, saw it in the flesh last week:

https://www.bbc.co.uk/news/business-68705711

Also went in the Huawei showroom, all 4 of their cars look pretty good. I think they'll do well.

Xpeng had several of these sitting outside the hotel we stayed at:

https://evtol.news/xpeng-voyager-x2

Aion is quite a large manufacturer, they had this in their showroom (most of their cars are at the budget end):

https://carnewschina.com/2023/10/09/gac-aion-hyper-ssr-launched-with-1224-hp-price-starts-at-176400-usd/

Not sure if they've launched in Europe yet but if the Europeans start backing off they'll leave a huge hole that'll be plugged by the Chinese

dpack



Joined: 02 Jul 2005
Posts: 45653
Location: yes
PostPosted: Mon Apr 01, 24 5:35 pm    Post subject: Reply with quote
    

wow, nice tech stuff

harvest and point of use

the "sporty" thing looks fun, if a wee bit daft for the supermarket car park or school run

if it is driveable and survivable, that many horses in a short street legal car for such a low price is a huge blow to the petrolhead market for daftly quick "affordable" shiny things

fetish goods sell practical ones by association

leccy = glamour is a splendid pitch

tahir



Joined: 28 Oct 2004
Posts: 45468
Location: Essex
PostPosted: Mon Apr 01, 24 5:44 pm    Post subject: Reply with quote
    

dpack wrote:
fetish goods sell practical ones by association

leccy = glamour is a splendid pitch


Exactly, lots of cheap as chips very nice electric cars in China but you do need the flash ones too

tahir



Joined: 28 Oct 2004
Posts: 45468
Location: Essex
PostPosted: Mon Apr 01, 24 6:25 pm    Post subject: Reply with quote
    

https://www.bloomberg.com/news/articles/2024-03-28/electric-cars-pass-adoption-tipping-point-in-31-countries?embedded-checkout=true

jema
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 28140
Location: escaped from Swindon
PostPosted: Tue Apr 02, 24 4:19 am    Post subject: Reply with quote
    

tahir wrote:
https://www.bloomberg.com/news/articles/2024-03-28/electric-cars-pass-adoption-tipping-point-in-31-countries?embedded-checkout=true


It mostly comes down to money with a big ticket item like a car.
The fear merchants have done a pretty good job so far of creating the idea that a used EV is a risky purchase.
I think they are running out of rope though.
It's actually a no win situation for the fear merchants, all they can do is drive the prices of used EVs down and hence make them a more compelling buy.

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