Docus
@Docus@lemmy.world
- Comment on Cutting the ‘green crap’ has added £22bn to UK energy bills since 2015 6 days ago:
I’m not saying it can’t be done. But a larger heat pump and replacing all radiators drives up the cost, there is not always space for a bigger radiator, (and water tank), and while higher flow temperatures are possible, it tend to reduce efficiency. Sometimes it’s just not worth the investment, not helped by the big gap between gas and electricity prices in the UK
- Comment on Cutting the ‘green crap’ has added £22bn to UK energy bills since 2015 1 week ago:
Something to do with physics. It’s not just about the heat output from a gas boiler vs heat pump. It’s the output from the radiator to the room that matters. For the same output, a gas boiler heats the water to a higher temperature than a heat pump. Which means a radiator gives out more heat to the room. As an extreme example, if it is freezing outside and the heat pump produces a lot of water at 15c, it may have a high thermal output but still wont keep your room warm. If it produces water at 30c, the radiator will transfer some heat to the room, but unless the radiator is very big or the room is well insulated, probably not enough.
- Comment on Cutting the ‘green crap’ has added £22bn to UK energy bills since 2015 1 week ago:
Link me to a heat pump that produces water for central heating at 70C or more. Typically, flow temperature is closer 40C, which won’t heat the average house unless you dramatically increase the size and/or number of radiators. Which is expensive and not always feasible.
- Comment on Cutting the ‘green crap’ has added £22bn to UK energy bills since 2015 1 week ago:
Heat pumps are great when the house is designed for it. Average uk house with shitty insulation and radiators that are unable to heat the room unless the water is really hot - it’s not going to work well.
- Comment on Six UK airports temporarily reintroduce 100ml liquid limit 3 weeks ago:
Only a few smaller airports have installed the new (bigger, heavier) scanners needed. All bigger airports have missed the deadlines. Not enough space, floor not strong enough etc. And now it appears the new scanners cannot be relied upon.
- Comment on Please spread the word, help if you can. 4 weeks ago:
Thank you. We need an amputator bot on lemmy
- Comment on Youngsters who break new smoking ban face on-the-spot fines in UK 3 months ago:
So are these council officers now getting police level authority? Will we be legally required to give our name and address to these council officers? What could possibly go wrong if we delegate authority to fine and prosecute to council staff?
- Submitted 3 months ago to unitedkingdom@feddit.uk | 8 comments
- Comment on Electric car sales in UK flatline, prompting calls for VAT cut 5 months ago:
No, it isn’t, not in the UK. My EV does run cheaper than an equivalent petrol car when charging at home, but when charging on motorways, which I have to do on longer runs, it’s actually more expensive to run than petrol.
- Comment on [deleted] 5 months ago:
Getting rid of the conservative party is up there too
- Comment on Key Boris Johnson aide set key WhatsApp group to auto-delete 7 months ago:
Average joe would be in trouble for just using whatsapp or email for government business. It is against the rules of any government department I ever worked with. Never mind deleting the evidence.
- Comment on Is charging electric car at holiday house "theft"? 10 months ago:
It’s more than 30p / kwh.
A 32 amp fuse allows around 7.5kw, not 3kw
House plugs in the UK typically have a 13 amp fuse, not 16 amp.
It’s not a safety issue. The wiring to the socket should support 32 amp, with a safety margin on top.
- Comment on Is charging electric car at holiday house "theft"? 10 months ago:
Electricity at home hasn’t been 7p/kwh for decades. 30p is a low estimate.