SteamyTea

If you could see PM10s, let alone PM1s, you could get a job in a chemical laboratory, would save getting the microscopes out. As I said, you are only convincing yourself.

It depends on what you measure, and how. For example: Compare the particulates emitted by a wood burner and a diesel car that is ticking over. Both will be producing about 5 kW of power, so comparable in output. You can also compare the efficiency i.e. how much energy each uses in one hour. You can compare noise, say at 1 metre distance. What you cannot do is compare 1 wood burner will all the vehicles that pass your house while it is lit. As for industry, not many use wood fired energy these days in the UK. If they did, we would have run out of indigenous things to burn. You can try as hard as you like to convince yourself that your wood burner is doing no harm. But you are only convincing yourself.

My Favoutrite Linda Cosgrave kissed me It almost made me sick I wasn't even looking oh what a beastly trick Her mouth was wet and greasy and her sticky little lips were full of salt and vinegar she'd been eating fish and chips I told her she was yucky and she went off in a huff if that's what kissing girls is like I'm going to be a puff I really miss Tim Brooke-Taylor

Thank you. I enjoyed it and which they could do a more in depth series, but accept that it is rather niche. Another good one is In Their Element Has Andrea Sella in it, and he is a bit bonkers, but a brilliant science communicator. This RI lecture about Rare Earth Elements is just brilliant.

You got the same Goodies book for Christmas as well then.

You may be worth going for radiators as the thermal losses though only 30mm of insulation and then into the floor will be quite high. You will need to run your flow temperature higher as well, which is never a good thing with wooden floors.

There is a girl in 3C, with a wart on on knee, and a pimple on her behind. I gave her 3P and she showed them to me. I wonder what she would do for a quid.

Well Phenolic Foam is about as good as you can get, you may need to fit some battens to support the floor boards, but they will only be a relative small percentage of the floor area, so maybe some sort of high density plastic.

She sorted you out in a second then.

@Pocster walks into a clock shop and puts his old chap on the counter and says "Can you fix this". The girl behind the counter says "This is a clock shop, not a cock shop you twat" Pocster then says " I know, put two hands on it"

I always like it when my Grandmother said "5 and twenty past" or "Five and 20 to".

what does LAP stand for?

They were mad to start with. Go monoblock and consider a different plumber.

Me to, since I was a lad. You may want to read this.

Is the noise intrusive, they show a low level 27 dB I seem to remember.

They are really quite fascinating. When I was a lad I applied for a job in a place that made bearings. Most of them relied on adhesive to hold the asbestos in place. One day I intend to test out an idea I had 50 or so years ago about a cast bearing.

Now I often post up links to radio shows, and get very few replies, but people may find this interesting. https://www.bbc.co.uk/programmes/m001y89y There is 5 of them.

No, they are just fan assisted radiators that are small. You can just plumb them in to the existing system. https://www.plumbworld.co.uk/smiths-space-saver-ss55-hydronic-plinth-heater-with-brushed-steel-grille-1304-1261300

Not without looking. It was mentioned when I was at university 20 years ago by one of the lectures, and I think that link in the first post covers it.

Concepts fine. Pushfit may be gentler on the hands when on full chat.

Will it stand the rock of the 'new waitress' test.

All identical except 4 are end terraced. My usage, like my immediate neighbour, is lower as we are single occupancy and out a fair bit at work, and both as tight as Cornish can be. And we are both the only mid terraced. If 6MWh annual usage is close to real, then that implied a 2.4 kW heat pump, which realistically becomes a 4 kW heat pump as I think that is just about the smallest available (might be 3.8kW). I think the main point is that using an EPC is probably not a reliable way of sizing (the multiply by 0.4 has been touted around for a long time). OK as a first order check, but probably that is all. Much better to spend an hour a week reading the meters.

I thought I corrected for that later on. That is to estimate the usage from the missing EPC data, it has the kWh.m-2.year-1 data on them all, but only the total annual usage on 3 of them. Yes, blame it on gungy eyes this morning after a days gardening yesterday.

That was my experience, but this is derailing the topic, except there are lots of opinions about most things.

Well as I am one of six places, which all have an EPC, lets us see what comes out No 1 0.4 x 6,788 = 2,715 kWh.year-1 No 5 0.4 x 6,222 = 2,488 kWh.year-1 No 6 0.4 x 6,371 = 2,548 kWh.year-1 Now as some of the EPCs are the old ones, I can try and estimate from primary energy usage for the missing data. No 1 Primary Energy 368 kWh.m2.Year-1 No 2 Primary Energy 289kWh.m2.Year-1 No 3 Primary Energy 320 kWh.m2.Year-1 No 4 Primary Energy 183 kWh.m2.Year-1 No 5 Primary Energy 364 kWh.m2.Year-1 No 6 Primary Energy 378 kWh.m2.Year-1 So using the average conversation factor of 17.5 x Primary Energy I can estimate the missing data. No 2 0.4 x 5,047 = 2,018 kWh.year-1 No 3 0.4 x 5,589 = 2,236 kWh.year-1 No 4 0.4 x 3,196 = 1,278 kWh.year-1 Taking the median (middle value to account for odd results) of those 6 and converting to MWh gets us to 5.9 Now I have no idea how my neighbours live, but I do know my space and DHW usage. The mean winter period for this year, so far is 11.5 kWh.day-1. So if the heating was on permanently that would be 1.68 MWh.year-1 which implies a heat pump size of 1 kW. But it isn't. For 8 months of the year my usage is 5 kWh.day-1, so space heating and hot water is 2.4 MWh.year-1, that implies a heat pump size of 1 kW. So I would not use EPCs as a guide to heat pump sizing as it could easily be 70% out, and in a small house impossible to buy. Rather than guess at usage from proxy data, just spend a few quid and measure it. If a HP installation is going to cost £3000, spending £100 on an energy and temperature logger really will take the mystery out of it, and if you have Smart meters installed, all you need is a dual temperature logger. I think I have made an error somewhere, shall try and find it before I go out. Actually I think I am right, I did not take into account that 4 of the houses are end terrace/semi detached and mine is a mid terrace, so less exposed wall area by quite a margin. My usage is similar to the other mid terrace, so an adjust upwards should be applied.