SteamyTea

Where, and are you certain.

Thank you. Thermodynamic is the pinnacle of it all. Just reading a book about quantum physics, it all goes back to thermodynamics, the Copenhagen interpretation has a lot to answer for.

Welcome. Are you a Red Dwarf fan my any chance?

Welcome. Sounds interesting what you are trying to achieve. Rather than look to 'the government ' for answers, try a physics book. Houses are very basic in reality, but they are messily constructed and are not designed to be modified after construction.

Like something out of The Blair Witch Project. At least the ASHP is quiet.

Considering they have been around for 80 years, I keep wonder why we don't use them more. Might be that the sodium ones have to sit at 100⁰C, and can catch fire. But they run at 300⁰C when discharging. That would be a higher temperature than the water combing out of a combi boiler, so must be 3 times better.

What does this actually mean?

Won't they just sell you the same tiles, just pretending they are new. We used to make tooling for concrete moulding. We specified a very complicated process for applying release agents, knowing that they would never be done on site. Still did not stop trucks driving over them and failure to remove retaining bolts. Made for an easy £1000 every time I had to go to site to point out it was the customer error.

That will be an acceleration then. A change in speed (scalar) or a change in direction is acceleration. Acceleration is either positive or negative, once direction is taken into account. Though it could be a momentum change if one rider gave a shove to another. One gains as the other looses. Energy cannot be created and momentum is always preserved in classical physics.

Energy is Half mass times velocity squared. Momentum is Mass times velocity. Force is Mass time acceleration. That should cover it as no need to worry about vectors.

Yes, by far the most cost effective way. Regarding the gym equipment, while they seem heavy, the static load is fairly low. The dynamic load is the problem.

Do it, costs little and the usage of the shed may change in future. This is where you want high thermal resistivity on the inside. Control the air temperature rather than the fabric of the shed.

The currents are more the aggregate, but we all know they are squashed flies really. The glutton can be considered a fibre as it is elastic and dispersed in the mix. Though if they are wholemeal, the dark strands of fibre, that we are told are good for us, also acts as reinforcement. Easier to just go for Nice biscuits, then dunk them in your tea.

Yes, they claim it will be a tenth of the price. The real problem is we don't have the right physics at the atomic level. Who decided it was a good idea to have electron shells, what we want is odd numbers of electrons loosely bound to the nucleus, and stop that trick of everything wanting to go to the lowest energy state, less entropy is needed (or is it more, I never know).

If you are interested in energy storage, you can sign up to this. https://www.energy-storage.news/ Not had any spam from them.

Or an article about heating controls. Not one SI unit, or even a number in it apart from wall depth.

A quick look at Wikipedia: Metal–air battery Theoretical specific energy, Wh/kg (including oxygen) Theoretical specific energy, Wh/kg (excluding oxygen) Calculated open-circuit voltage, V Aluminium–air 4300[5] 8140[6] 1.2 Germanium–air 1480 7850 1 Calcium–air 2990 4180 3.12 Iron–air 1431 2044 1.3 Lithium–air 5210 11140 2.91 Magnesium–air 2789 6462 2.93 Potassium–air 935[7][8] 1700[Note 1] 2.48[7][8] Sodium–air 1677 2260 2.3[9][10] Silicon–air 4217 9036 1.6[11] Tin–air at 1000 K[12] 860 6250 0.95 Zinc–air 1090 1350 1.65

With cheap smart phones, you can download a sound meter. May be an idea for people to take some readings of their ASHPs, say at 1m, 2m, 5m and 10m. Be even more useful if the same readings were taken at different angles to the front, say every 30°. Best done when they are heating water as that will generally be the highest load.

Low density expanded polystyrene has a conductivity of 0.33 W/m.K. Air is 0.0262 W/m.K. The rest is just arithmetic.

There may be a slight difference, but hardly noticeable, as long as you are not reducing the overall area of the intake and outlet from the radiator. Imagine it is like leaving a door open a bit, or a lot. Don't overthink it.

Yes. The trouble is with the term 'thermal mass'. It has no official (or ofical if you are a card carrying Trump supporter) definition in the sciences, but is banded about as if it is something real, and good. It gives the impression that the 'count of stuff' is the important part and all materials are equal if they have the similar characteristics. What people are really talking about is thermal inertia, which does have units attached to it because it takes in all top level properties.

It is hard to describe, but the ones I have stood by is more of a hum and the occasional whoosh. Though I did hear one that was rattling, but then it was battered to hell (had secondary use as a bike stand). There is an estate in St. Agnes where every house has an ASHP, never heard anyone mention the noise, lack of performance or high running costs. There is a global map, the World Hum Map, where people log when they hear a hum (if they can be bothered). I notice that St. Agnes is devoid of 'hearings'. https://thehum.info/newhummap/html_docs/

What sort of noise do you think they make?

Which is, as you say, Specific Heat Capacity. But that is not 'thermal mass'. Try again.