SteamyTea

Is that latent or sensible?

How much are you loosing from the UFH to the ground? Bigger ∆T, large area and possibly poor insulation levels.

Welcome. If you internally insulate you can, at the same time, deal with airtightness and relocate pipes and wires. Messy and involved planning, but gives a better job probably.

And voltage regulators.

They won't be in his/hers favour.

Vortex generators are not a new idea, they make versions that go into flowing water. A mate of mine worked in the marine renewable energy sector. His job was to computer model the energy output. He left that job because he was fed up with projects that would never work, designed by dreamers.

We stopped taking AmEx because of the high transaction charges and the delays in receiving payment. AmEx did not take us off the Small Shops register, which upset a few customers who think it is their right that we, a small business, should pay for their rewards. Can usually tell when someone is going to use AmEx as they hold the card face down as they present it to the NFR.

This sort of nonsense relies on people's lack of understanding of physics. Tell the conspiracy theorists that it works at the same frequency as 5G, that should be a laugh.

I am always amazed that people are reluctant to do this. It is probably the cheapest way to test your heat load. Could even out energy meters on them, and a cheap data logger. Tempted to design a box of tricks to do just this.

I had some cracked render, the water came in a good 2 metres from the damage. I also had the loft insulation move (as have half my neighbours) a few inches in a storm. Was enough to just cover over the soffit vents, then each time a hoolie came in, water got soaked up into it, then into the ceiling below.

Lower than what?

I often feel that some Architects are good at sales, then the hard work starts. I suspect that you owe/already paid then several thousands. Have they done and real onsite decision making, or is it the relatively easy office based stuff. It is easy to redraw a line, bot so easy to remove a foundation and relocate it. My experience is that sales people are all to willing to walk away from the job once they have sold it as easy.

I think you are. kW is the power you need, kWh (or more likely MWh over the year) is the energy. Thank of energy, the kWh, as how much fuel is in your car, power (the kW) is how much you press the accelerator.

Neither did Wendy. Anyone seen her since.

PU quite often used water as part of the curing process.

You can look them up on the manufactures website, there should be a temperature/power chart. The material does not make much difference as they are thin and of low SHC. The water in the system will have a much greater effect than the emitters.

They knew a thing or two about tunnelling. https://www.bbc.co.uk/programmes/p07r39cw

Sahara Pipeline, got laid by 500 men in 3 days. Better than @pocster's parties.

That was not really reflecting what I was trying to say (was in a queue and only had half a brain on it). Thinking about it, and taking @pdf27's calculations into account, it may be best to have the 'hottest' part of the UFH pipework as close to the centre of the building as possible, not around the exterior walls. wall. Not sure how much it would save, but when you start to get to extremely low energy numbers, a small saving becomes more important.

No, but probably never less than 20⁰C different, except where the flow goes into the room. So you could say that area has a higher loss, maybe a minimum of 25⁰C difference. Another way to look at is to calculate the floor losses with conventional heating, which may have a mean temp different of 12⁰C. Then work out how much extra insulation thickness is needed so that an UFH system matches those losses.

Not sure what you mean by that. Are the radiators able to deliver the necessary power at say 40°C rather than 65°C. A buffer tank is really there to limit short cycling of the heat source. ASHPs perform best when they have been on for a few minutes and then deliver a consistent temperature at a fixed flow rate. Radiators on the other hand may be switching on and off as the room temperatures vary, this changes the volume of water in the system, that needs heating, to change.

My feeling is that you should always fit a buffer tank. Are your current radiators large enough?

It is true that factory/office based stuff is easier to organise than site work (we did both). But I did notice the difference between people I sent to do site work. One was quick, messy, angry and (expletive deleted)ed jobs up a lot. Another was organised, clean but considered slow, though he always did they same work quicker (we fitted spa baths, saunas, sunbeds and steam rooms), and never had to go back to fix things. One guy never managed to finish a job, and an electrician I did not employed (someone else did) used to boast that his brother had all the papers, but no work. So sacked him for being unqualified. I did my engineering apprenticeship in an American firm that was, at the time, considered heavy on paperwork and quality control. At the time I never really understood it all, but can see what they were at now, and they are still about. They patented the tab pull for beer cans. Employ a statistician, they can help a lot.

That is why I asked how you measure productivity. I used to run a factory where each cycle took 5 hours. Meant 1 cycle a day, and 3 hours wasted. Changed the working week to 10 hour days, so 2 cycles a day, but only worked 4 days a week, upped productivity and reduced costs by running staggered shifts (so people worked less hours in total and got more money). Profitability went up as well. It can be done with decent analysis if you want to.