Posted By: Mike1Over 100 wood burners per square kilometre

That's at 100x100m intervals from coast to coat - kof gasp

Sorry - but lucky old Worthing, Norwich, Reading, Cambridge and Hastings

Posted By: WillInAberdeenplug in the power cable

if you've got 120 V mains

Posted By: WillInAberdeenou just open the window**, hang it over the window sill,
** no they don't say how the window closes on it

From the images, you cut a large hole in the window frame. Or maybe replace the window with one designed to accommodate it?

(Just putting it up here for everyone's entertainment value, can't see it actually making sense, compared to a normal split a/a, if you have to replace your DG to install it)

Sorry, flippant comment as I have no knowledge about specific this appliance. The front part of an inverter is four diodes and two capacitors, which are usually rated for 600V so that the same Chinese inverter can be used in lots of appliances all over the world, but I don't know about this specific one.

Usually each country does their own approvals (CE mark in UK and Europe) so that would be the biggest hurdle before that product could be exported to UK. US might also use a refrigerant we don't allow.

Yes exactly, though the (extremely irritating) website says elsewhere (in a snazzy graphic-y thing I can't copy or link)

"115V and 203-230V all in one
Automatically identifying the required voltage
Eliminate the hassle of rewiring"


A contact over there says that they're on sale in Costco, you take it to the checkout and they'll load it into the back of your pickup truck for you.

I looked at Midea products when I installed the Air to Air in my own living room. I looked for ceiling mount split units but in the UK they were all sized around suspended ceiling modules. I couldn't find anything that would fit between standard UK joist spacing which is why I eventually went ducted.
Looking at Midea USA website It looks like things have moved on, Stateside, with "in between" joist, split units; Europe/UK next?

https://www.mideacomfort.us/multi.html

I don't know of any UK flat associated issues with such a unit, I have a house so in my case not a problem.

@willinaberdeen

>>>>>>>>>>>>>>>>>>>
The biggest source of NOx emissions in London is now from gas boilers (following reductions from buses and cars). The solution is to get rid of gas boilers and cookersand replace with heat pumps and induction stoves.

So wood stoves get lots of criticism because they are visually smoky and tend to be in affluent areas in cities.
>>>>>>>>>>>>>>>>>>>>>>>>>>

This really misses the point. Yes, gas boilers are the biggest source of emissions because nearly every home has one. That doesn't mean there is any excuse or justification for burning wood in London. 'eco' stoves are not eco and whatever people are meant to burn, there are people burning all sorts of crap. Theres zero enforcement.

Posted By: WillInAberdeenMy issue is that there's repeated and sensational coverage of the smaller part of the air quality problem (wood), while no coverage of the bigger parts of the problem (gas, and vehicles and agriculture across NW Europe).

Here in France the Arve Valley (Chamonix to Geneva) has some of the poorest air quality in the country.

The chart below* shows that burning wood & other biomass (dark green) produced up to 73% of winter PM10 emissions. Vehicles (black) only produced up to 10%, despite the presence of the motorway leading to the Mont-Blanc Tunnel. This obviously isn't the UK, but it does illustrate that wood burning can be the biggest part of the problem, even away from major towns & cities.

*https://www.haute-savoie.gouv.fr/contenu/telechargement/22569/138520/file/travaux-scientifiques-pollution-vallee-Arve.pdf

Posted By: WillInAberdeenMost particulates are not emitted as particles, so aren't counted in those kinds of emissions stats, same as in UK. They're actually emitted as NOx or sulphur or ammonia gases which sit around in the atmosphere and then convert into particulates by photochemical reactions.

If you measure them in tonnes, then yes, there are way more tonnes of gas than of particles. But that says nothing about the relative toxicity - though I guess someone has some estimates for that somewhere. However the source of particles is attributed by the carbon 14 they contain (particles from wood contain less than particles from fossil fuels, for example). Other chemical traces are also used*

Anyway a quick search came up with stats for PM10 and NOx for the Arve Valley at https://www.atmb.com/notre-adn/qualite-air-pollution-vallee-arve/, though the sources are grouped differently compared to the chart above. 'RĂ©sidential / Tertiaire' presumably = wood & other boimass + gas, though presumably not much from gas in view of the previous chart. BTW, tertiaire = commercial.

So residential & commercial emissions = 62% of the PM10, 22% of the NOx.
Transport = 9.7% of the PM10, 58% of the NOx.

These are year-long averages, rather than the winter season of the previous chart.

Of course, there are other particulates apart from those - PM2.5, heavy metals, ozone & more - though I don't plan on looking for the data.

*See also Atmospheric Chemistry and Physics, article 16, 13753–13772, 2016 "Estimating contributions from biomass burning, fossil fuel combustion, and biogenic carbon to carbonaceous aerosols in the Valley of Chamonix: a dual approach based on radiocarbon and levoglucosan" https://acp.copernicus.org/articles/16/13753/2016/