Search found 1006 matches

by Mart
Tue Apr 30, 2024 10:33 am
Forum: Media and Culture
Topic: Accelerated grid connections for renewables
Replies: 1
Views: 66

Re: Accelerated grid connections for renewables

Brill news, but raises a question for me, if anyone knows the answer. The article mentions, as Dan points out, that the DNO (distribution network) approves, prior to the transmission network (National Grid*). So, just wondering, but does power go 'up' from the distribution network, to the transmissi...
by Mart
Tue Apr 30, 2024 10:24 am
Forum: Gardening and Sustainability
Topic: Mouse problem in poly tunnel
Replies: 5
Views: 115

Re: Mouse problem in poly tunnel

May have been a fluke, but we caught a mouse last week. We no longer have any 'tough' cats that grew up 'on da streets', or are fully mobile, so our homegrown cats like to bring mice in, and let them loose in the house. :facepalm: Anyways, the mouse took shelter behind the kitchen cabinets. Then fou...
by Mart
Tue Apr 30, 2024 10:15 am
Forum: Hydro Power
Topic: High density hydro
Replies: 9
Views: 258

Re: High density hydro

Thanks, great to learn new stuff each day.

Back to costs, is it fair to assume that the fluid mix will be cheap, so the 2.5x mass makes sense?

Not a trick question, not asking for a yes/no on viability, just interested to know if the basic idea has wings?
by Mart
Mon Apr 29, 2024 2:44 pm
Forum: Hydro Power
Topic: High density hydro
Replies: 9
Views: 258

Re: High density hydro

Reminds me of those bottles of kaolin and morphine as a kid, that you had to shake well, overwise it was just morphine ....... ah, that explains why you don't see it any more. :facepalm:
by Mart
Mon Apr 29, 2024 1:43 pm
Forum: Hydro Power
Topic: High density hydro
Replies: 9
Views: 258

Re: High density hydro

Same here Dan, I thought this was one of those 'interesting, but won't go anywhere' ideas. Assuming the dense fluid is cost effective, then it sounds like a great idea for closed systems.

How much does mercury cost at ~13.5x the density of water? :shock:
by Mart
Sun Apr 28, 2024 1:21 pm
Forum: Pets
Topic: Cam Pets, or Petcam?
Replies: 23
Views: 11016

Re: Cam Pets, or Petcam?

Whilst we don't do much boarding for Guide Dogs now (since I got Long Covid), we do cover respite, emergencies etc.. So we've been lucky to look after the lovely Kelly for one or two days, on a number of occassions this year. She's adorable and loves a cuddle. Here's a pic of her playing with our bo...
by Mart
Tue Apr 23, 2024 11:21 am
Forum: Media and Culture
Topic: England could produce 13 times more renewable energy
Replies: 16
Views: 1162

Re: England could produce 13 times more renewable energy

Thanks Ken, eye-opening context.

I'm always heartened by the reports from Mark Jacobson at Stanford University. We have the solutions today, and they are cost-effective / cost-competitive. So the improvements over the next 26yrs add much more excitement, if we'll just get on with it, a tad faster.
by Mart
Tue Apr 23, 2024 11:10 am
Forum: Energy efficiency
Topic: PV so cheap it can be used as structure
Replies: 9
Views: 454

Re: PV so cheap it can be used as structure

We must be close to PV panels for fencing v's say a 6x4ft wooden panel that needs painting/maintenance? I was thinking bifacial panels on the EW facing sections of motorways could have potential. Yep, (E/W facing panels) perhaps as those sound reducing fences? Looking at Australia, India, parts of ...
by Mart
Mon Apr 22, 2024 12:37 pm
Forum: Energy efficiency
Topic: PV so cheap it can be used as structure
Replies: 9
Views: 454

Re: PV so cheap it can be used as structure

Missed that one. Good news though.
by Mart
Mon Apr 22, 2024 11:40 am
Forum: Energy efficiency
Topic: PV so cheap it can be used as structure
Replies: 9
Views: 454

Re: PV so cheap it can be used as structure

We must be close to PV panels for fencing v's say a 6x4ft wooden panel that needs painting/maintenance?