MikeSharp01

Hi Jeremy and welcome back. One of @TerryE's Sunamp's failed and he disposed of the acetate, cut the machine up and replaced it with a UVC - see his posts for details.

Yes and with good instrumentation you can charge people by what they take out-of the pipe. Presumably everybody needs a tank for domestoc hot water (DHW) though

THAT is the bit that is so wrong and would be so easy to correct. Not that easy, see here: https://www.sustainabilitybynumbers.com/p/electricity-pricing. The only real way is to eliminate gas from our electricity generation then the price could drop. We, the people, don't own our generation so the price is market driven and the price is down to supply and demand in the market. The wind farms can quote any price they like 0.00001p per unit, safe in the knowledge they will get paid the gas price.

Now we are in for it....

What an interesting journal! From ASHP in the roof to qubits cooling on the same page - great!

Not the current party they don't - might be a window there but perhaps not. The trouble is if we all stay quiet then for sure nothing happens and you should never underestimate a bunch of committed individuals should you.

Found this https://www.nesta.org.uk/project-updates/how-could-generative-ai-change-the-heat-pump-skills-sector/ article and associated heat pump AI chat bot. Give it a go and see if it tells the truth (or your truth depending upon your view. I asked it "How do I calculate the heat demand to size the heat pump in our new build?" and received the following output: " To calculate the heat demand for sizing a heat pump in your new build, you'll want to follow these steps: Conduct Heat Loss Calculations: Start by performing heat loss calculations for the building. This involves assessing the heat loss through various elements such as walls, roof, windows, and floors, as well as considering ventilation and infiltration losses. It's important to calculate these on an elemental basis and then aggregate the results. Use MCS Guidelines: Refer to the MCS Standard MIS 3005, which requires the heat pump to meet 100% of the heating demand at an external temperature condition that is exceeded for 99.6% of the year. This means you'll need to ensure the heat pump is sized to handle the worst-case scenario for heating demand. Consider Hot Water Demand: If your heat pump will also supply domestic hot water, factor in the hot water demand as well. The hot water load can be significant, especially in well-insulated buildings. Consult BS EN 16147 for guidance on determining loads for domestic hot water production. Consult with Clients: Discuss the typical consumption patterns with your clients, including their hot water usage and re-heat times, to ensure the system meets their needs. Avoid Simplistic Sizing Methods: Avoid using rules of thumb for sizing, as these can lead to inefficiencies. Instead, rely on detailed calculations that take into account the specific characteristics of the building and its heating requirements. By following these guidelines, you'll be able to accurately size the heat pump to ensure efficient operation and comfort in the new build. If you need further assistance or resources, feel free to ask!" MIS 3005 is publicly available but now 12 years old - presumably nothing has moved on since then! BS EN 16147 is not and would cost you £250+ so that would be an investment. As a member of the public I can get to see that at the British Library, but unless you live in London you will probably spend that amount getting there. Ho Hum. On the upside it exists, it is basically open source, you can fork your own version from their git repository and better yet they wany to hear from people who experiment with it - so something to play with when it's cold outside.

I can see how a thermal mass might glow but how would an endorsement glow?

Hi Just spotted that Danfoss have got behind your research @DamonHD you can read all about it here: https://www.installeronline.co.uk/green-energy/heat-pumps-and-trvs-what-installers-need-to-know/

Somebody - maybe us, needs to put together a briefing paper / manifesto / letter to HMG via the MPs and the PM to let them know what's going on, why it's all wrong and offer some solutions. We could probably send a letter to the majority of MPs, we all live in a constituency somewhere don't we. The challenge will be getting us all to agree what needs to be said.

We need to lay a thin self levelling subfloor, which will then have the wood flooring on it, and I would like to finish the Plaster boarding (PB) before we do the screeding and definitely before we lay the flooring, which I want to be the very last job! I appreciate that I will need to protect the lower portion of the PB, along with doors and windows, up against which the screed will flow from splashes etc. Should I re-think and do the screed first & why?

Rule of law is a good thing in a liberal democracy perhaps not so much in an authoritarian regime I agree - but we are not there yet. Poorly formed laws that pay no pre-emptive attention to unintended consequences should be challenged.

WC = Weather compensation.

Sounds more like you are reading the return temps doesn't it. ASHP output temp does feel a bit low though. Are you getting domestic hot water from the system reliably?

All the suppliers we have spoken 2 over specified the ASHP size. I argued with them all, only two of them listened and reworked it based on the design, and as built, data. Hopefully we are now closing on a deal.

I am not convinced we should wholly dismis combustion, indeed any technology, after all, when you think about it, we rely on combustion every millisecond of every day don't we. It's just we need it to be definitively clean our end.

Surely if we could extract the energy from any renewable resource, such as wood, without releasing the nasty stuff (C, CO2, PMX.X etc) into places we don't want it then it's legitimate to look at how to do it - if you get my drift. Quite how much of the energy generated would be needed to clean it up and how are the billion dollar questions really.

Great - made perhaps before wider concerns about wood stoves but a good watch all the same.

Good news all round - well done, looks cold though!

And the salvage rights go to.....

Well some of them anyway - I teach AI to undergraduate and post graduate engineers, very much tempered by the patterns I have learned about technology and its progress. I am as concerned about the potential of AI as Geoffrey Hinton but I do think it has great potential to help in many places - medical imaging is one, but these are really rather simple AIs. We are just at the find and exploiting the opportunities phase in the backwash of the Large Language Models (LLM) really. Recent research undertaken showing how LLM AI might find ways to protect itself from our intention to turn it off is worrying but for me - and I would not want to hijack this thread as it is a genuine challenge for @Garald, almost none of it is possible without leveraging the services of the big players - such as Google (Tensorflow /Keras) and Meta (PyTorch) so we are slowly moving ever closer to the grip of the corporations for more and more of what we do - this much I have learned.

Yep - learning to learn is more important than learning any single subject and embedding lifelong learning alongside a reflective practitioner approach makes everyday a school day!

Have you got ducts in place to handle all of this or will you need to do major works to get the cables in and around?

Sounds a lot for a 68W pump, has to overcome the head issues and then deliver flow. I would isolate all but the ground floor (assuming the boiler is on the ground floor) and see if you can get a decent heating system out of that single manifold I think that might give you an idea of the scale of the problem at least. Others will have other ideas I am sure but that would be my starting point.

How hard can it be to derive a curve that takes account of all these factors. I know that here, because we are only exposed on one quarter really that when the wind is in that quarter the heating has to work harder.