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#ASHP

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Good news! The UK Government has removed one of the restrictions on heat pumps!
bbc.co.uk/news/articles/c3e5pl

Hopefully this will mean more people being able to install energy efficient heating and reduce their dependence on gas.

BBC NewsPlanning change makes heat pump installations easier for homesThe rule requiring planning permission if a heat pump is within 1m of a neighbours property has been removed.

Air source heat pumps: they work.

Right now at 23:12 (almost midnight):
Outside temperature: 10 C
Electricity consumption: 0.6 kW
Thermal energy: 3.9 kW

For the whole day:
Electricity consumption: 16 kW
Thermal energy: 77 kW

About 5x heat taken from the outside air. Remarkable.

Some of those 16kW were offset by solar panel production. I wish there was a good equivalent for roof wind turbines to cover Winter and nights; sadly none seem to actually work in the turbulent air around residential buildings.

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@Simon318ppm @bazcurtis
We’re all electric now 5kW #SolarPanels , 5.6 kW inverter 9.6kWh #battery (GivEnergy) Induction hob #ashp #ev car and motorcycle On #octopus iog

The battery is fully charged over night @ 7p/kWh then any excess exported at 15p I don’t bother with force discharge unless free session coming up or winter saving sessions

This month electricity bill has been -£15, that’s for everything DHW, and 1200 miles, granted no heating

@icanbob @janrosenow

Similar situation in the UK: solar panels peak production is when the heat pump (#ASHP) needs the least power (just for hot water).

In the #UK, Winters are windy, and harvesting energy from wind would be ideal. Alas, current options aren't suitable: either a massive mast with large blades away from buildings to avoid turbulences (at a huge expense), or nothing.

Installers have so far been reluctant to offer any rooftop options, stating these don't work in practice and end up as net consumers of electricity (some need power to spin up when wind picks up), citing various council-driven initiatives that ended up with wind turbines being sold for scrap after a couple of years.

If someone comes up with a relatively inexpensive rooftop wind turbine capable of operating under turbulent wind input as expected around houses, that would transform domestic energy supply in windy countries like the UK. A huge business opportunity.

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@dbenton
Fully agree that the industry needs to shake up. I'm starting to look into ground source for our house (we should have the space).
Historic England has been doing work on heat pumps and have various bits of technical guidance published and Webinar recordings available now and up coming, the most general so far being this one: historicengland.org.uk/service
#HeatPump #HistoricBuilding #ListedBuilding #ASHP #GSHP #LowCarbon

historicengland.org.ukWebinar on the Use of Heat Pumps in Historic Buildings | Historic EnglandRecording of a webinar on heat pumps in historic buildings, including busting some myths about the topic, recorded December 2022.
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BTW, does somebody know of a bigger #ASHP anywhere? The only multi-MW heat pumps I found are using wastewater or seawater as heat source. A few ground source exist in Finland but I believe at only about 4MW.

This new 11 MW(th) Air-Water #HeatPump in Vermo, Espoo is the largest of it's kind in #Finland and a first step to 100MW Air-Source HPs on the #Fortum #DistrictHeating network in Espoo, Kauniainen and Kirkkonummi.

It was built last year next to a 160 MW oil-fired peak boiler. This week temperatures plunge below the design temperature -15°C of the #ASHP, so the peak boiler takes over. Luckily only for few days annually, and using bio-oil.
#SectorCoupling #Wärmewende

fortum.com/products-and-servic

#OctopusEnergy 🐙 announces the launch of its Cosy 6 #HeatPump #ASHP

current-news.co.uk/octopus-ene

Available from December’23 & initial unit is 6kW peak output. Other outputs will follow, but 6kW covers most residential properties.

Will be high temperature capable, allowing for fewer radiators to need replacing, with the trade off of higher running costs (physics!). I’d imagine Octopus will mitigate this to a degree with the special tariff & Smart Control of the unit to optimise for operating cost

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@KimSJ yes, however in their favour they are very transient - more like a kettle.

Electric showers are only in use for say 5-7 minutes (on average), so not really a big issue for cutout fuses (thermal heat) or the grid (power demand) here due to diversity (ie not everyone will be showering at the same time).

That said, an electrician probably has to add this in which pushes up the diversity load.

Strategically there should be a move to stored hot water using #HeatPump #ASHP

Today marks the day I am #fossilfuel independent for my house, at least with regards to the energy I produce and anything from the grid is renewables or offset from #octopusenergy

I've now had some new radiators installed, a new hot water tank system, and a new air-source heat pump. This is all tied into my existing solar+battery setup, allowing me to run this for 'free' for around 2/3 of the year most likely.
I already swapped the gas hob for an induction hob.
And the car has been an #ev for nearly 6 months now.

So that's me done. Have 4.8kWp solar, 13kWh battery capacity, 6kW ASHP, and a Niro EV.

And I've even had the gas meter removed and the mains gas supply capped.

Now just need to get used to the new system. Oh, and pay for it :)