SteamyTea

But for best gas economy you would size them the same, to get best of the condensing mode. Would that be the case if you wanted to deliver instantaneous hot water. A 14 kW heater does not deliver a great amount of flow.

I think there are a number of problems involved with retrofitting ASHPs. The biggest one is general ignorance of heating systems and how they work (why many on here are trying to help). Once a customer gets a good idea of what is really needed, then they can shop around with confidence. Do your own heat loss calculations, then you can discuss requirements.

Most electricians can change a consumer unit with pulling the main fuse.

OpenFoam is the big free CFD package. Not used it but a mate of mine was a heavy user of it and thought it was brilliant. www.openfoam.com

I did write up a method on here a while back, can't remember what the title was though. It basically took a topological approach to turn a 3D shape into a 2D shape, but keeping the dimensions and thermal properties the same. Trouble is I have no way to verify it.

Ureka is one, think I used called Aerolite. There are loads.

It has two wires in, 4 out. Well mine does. So no new consumer unit/s were needed. I think it is more the billing companies, rather than the DNOs who have the problems. But yes, we have (expletive deleted)ed up big time by having too many 'energy' companies, each with different systems. Years since you voted for me to leave the European Union, still waiting for you to deliver a world class energy system by tacking back control. By using a French state owned supplier, I am still getting European money rather than filtching it off hard working British families.

I had a smart meter fitted almost a year ago, within 24 hours the communication hub went AWOL. The communication module is separate to the smart meter, it is attached to the top. I have E7 and in the past the radio signal did not always reset the meter, but that was very rare (maybe 3 times in 20 years). Smart meters don't use the old radio signal, but have a combination of an internal clock, a neighbouring communication hub clock, and a text message time signal. Took a while to get it sorted (because EDF are (expletive deleted)), but not had a problem since. All my problems have been down to EDF having hopeless internal systems to deal with problems. The latest one has been sending out bills that seemingly do not relate to meter readings. This happens if you send in a manual reading, it generates a second bill, but does not cancel the previous one. And their letters can take over 10 days to reach the customer, so the 'pay within 14 days' is often received after the threatening letter. Going to be speaking to them again tonight, shall get it escalated and hopefully another 50 quid off my bill.

If it is a thermostatic flow controller, was it part of an old heating system and never got removed.

Do you want an exact value (certification) or an approximate value, I think the building regs have some charts to calculate it.

It is a urea formaldehyde resin, and probably the best wood adhesive there is. It does have a shelf life though, so don't use an old tin of it, even if it does seem to still be powdery. Some of the newer industrial polyurethanes are impressive, mainly because they can fully cure in minutes. These are often specially blended for a specific timber type, and more importantly, for the mixing pump machines. These days, adhesive tapes are often used, think if them as very high performance double sided tape. Curing is often initiated once a set pressure is reached.

The question is for how long. It is why aging characteristics are important.

Just to add to the above, gluing any materials together is more then just wiping the dust and oil off and squirting a bit of glue on the faces. Overclamping can cause problems as it squeezes too much adhesive out the gap, making gap shorter than the cured polymer length. Different polymers will have different directional mechanical properties, just like the materials they are joining. I like using adhesives, but would be very wary of sticking structural elements together on site. A year or so back, I stuck some ply to a plastic bench (down at the cafe in the woods). I must get down there and see if it is still in place. I also stuck some ply to a paving slab and left it propped up against the my house wall, shall try and dig that out and see what has happened.

This is the last thing I saw her in, looks like your basement.

https://www.google.com/search?client=ms-android-motorola-rev2&sca_esv=b82d5f7397a53474&sca_upv=1&q=dome+head+torx+screws&udm=2&fbs=AEQNm0A-TSThzBStWy2iQzbzvM8Eh_6ApuFddKkoj5zANazlqU1n93c0bTwp0p-H4C5RAV9Ypcj2zREXKK0PXEaiuH3qFTw-Kni8IWq01SxzXmgNrqJE03KB3pw6uqClMJiwdQ69lw-SoZElsbOzpkxRKMWXFZZ0cObq6SS4lb53wG8fN5I5XtqLAGSaRFX7zF6SqyPt1xEZ7l1AfjK88wf0vIeHTtK8SA&sa=X&ved=2ahUKEwjx0K7QzcyHAxW2QkEAHYJ3AsMQtKgLegQIDBAB&biw=320&bih=512&dpr=2.25

They need lost of water and only one needs some nutrients.

Assume it has got asbestos in it. Hopefully it is the stuff that is made into a blanket and should be easy to remove.

During the pandemic we had trouble with pasta and bog rolls. We really do need to have a word with ourselves in the UK.

It is as you described, which I think is the point of the show. Was very good though.

Interesting radio show about living off your land. Shame no Felicity Kendal. https://www.bbc.co.uk/sounds/play/m001yhhy?partner=uk.co.bbc&origin=share-mobile

That will just cause the free marketeers to raise the base price. Economics is not your strong point. Economics and accountancy are not the same thing. So with government spending at ~£1.2tn and revenue raised at ~£1.1tn, there was not a £121bn 'black hole' last financial year. What was it then, a BREXIT bonus? That is about £1750 for every person in the country.

what is to stop it back feeding to the grid? Short of separate house circuits.

My parents garage doors allowed you to get in with a key on the door handle. The key removed the lock barrel, which was connected to a steel cable that when pulled, released a catch on the motor drive. Never needed to use it as it was very reliable. The wooden frames rotted out before the electrics failed.

Thank you.

Just noticed that @Gus Potter has awarded me the equivalent of a gold star that McDonald's employees get. Gus, tell us a bit more about secondary reinforcing, reinforced concrete. My interest in concrete is just a hobby for me to help improve my chemistry, not my mechanical engineering skills (very long time ago I studied it).