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SteamyTea

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Everything posted by SteamyTea

  1. The MPAN should be etched onto the meter, have you checked the number? And it is kW and kWh, not kw, Kw or variations of the wrong.
  2. I was sitting overlooking the sea earlier and for some reason I thought of roofs. Now it is almost certain that most people will have a requirement for at least one of the above, if not all of them. So the question is, do we need to redesign the roof to incorporate all the above in a simple, and ideally, modular fashion that can be adapted to most houses? I find it strange that there are so many different ways of making, what is in essence, a weatherproof covering. So over to the cleaver people on here, and our helpful SE and Architects, @Gus Potter, @ETC, @joe90, @saveasteading and the others who I cannot remember. All comments/ideals welcome.
  3. Not so sure about that. Google Search
  4. Was probably the financial backers, rather than Andrew. Friend of mine was an electronics engineer at Ford. They spent ages designing and testing new systems, then the 'value engineers' got to refine it. The real dodgy electronics was also sold to PSA.
  5. https://edavies.me.uk/2023/10/abandoned/ Seems he has not posted at the other place since October 2022.
  6. Not the cavity as such. Put a VLC on the warm side i.e. inside the house. Make sure the cavities are properly ventilated, but not draughty, and all will be fine. The outer leaf should act similar to a wind tight, but moisture open layer, but that does depend on choice of materials and quality of build.
  7. Was the NordStream not sabotaged. Did the British not set fire to all the Romanian oil wells in WW2. Did the Sultan of Brunei through out the British in 1962. Iraq withdrawal from Kuwait. Greenpeace boycot of Shell in Germany because of pollution from dismantling North Sea rigs (false claim but it worked). Fuel depot blockade in UK in 2000. Nothing new about targeting energy infrastructure. It is a miracle that energy can be easily delivered so cheaply. Might be because, like one of @Pocster's parties, you can get laid by 500 men in 3 days.
  8. Yes and no. The dew point is just somewhere at the right temperature, humidity and air pressure for water vapour to condense. Take an extreme example, low humidity and high air pressure, and a badly insulated wall. The dew point may be outside the wall i.e. on the cold face. The counter is a colder, well insulated wall, high humidity and low air pressure. The dew point may be on the inside. Those examples are regardless of walk/insulation thickness. Just the thermal conductivity. In reality, a VCL is fitted internally (in the UK climate), and the living area has controlled ventilation. Controlled ventilation replaces warm, humid air with less humid air (less mass of water overall).
  9. Noticed it is limestone. Acid may discolour it..
  10. Which should cover almost all inductive loads. What happens if it does happen to go out of range, are there any error codes?
  11. Isn't there a chemical method that you can use?
  12. For a 9K temperature difference, so about 1 kWh/day.K. Though that was the extremes. Probably a smaller temperature difference over the full 24 hours. Not sure how large your house is, so cannot work out the kW/m2.
  13. https://www.amazon.co.uk/flintronic-Petrol-Transfer-Gasoline-Solvent/dp/B0BKKZM6LX/ref=mp_s_a_1_3 About the same as a gallon of fuel.
  14. Possibly. Hard to tell without testing. Some inverters have a minimum load requirement as well i.e. 200W. Though I don't think this is your problem.
  15. I seem to remember (been 18 years since I seriously studied electronics and I was crap at it) that back electro motive forces can play havoc with the harmonics.
  16. They are all resistance loads, the water pump is an inductive loads. The starting characteristics are very different.
  17. Regarding the inverter, can you fit a local battery and small inverter to the pump. That way you can take the load of the main one. Will be some efficiency losses, but better than knocking the power out.
  18. The physics is quite simple. Air is a mixture of gases. Nitrogen, oxygen, water vapour, argon and the other traces gases, carbon dioxide, methane, nitrous oxide. Nitrogen and oxygen are fairly thermally stable in the earth atmospheric temperature range. Water vapour (about 0.25%) is anything but stable. It can be a solid, a liquid or a gas. Sometimes all three at the same time (triple point). Temperature is not the only thing that makes it change state, air pressure can as well. This is why when you look at some more sophisticated RH and AH models they ask for air pressure. Water is also strange molecule. It has different thermal properties and different temperatures, and to make matters worse, expands, rather than contracts, when between 277K and 273K, with the latter temperature being a phase change temperature. Then there is the way that it likes a nucleus point to change phase on. Mineral wool gives it billions of these, so like to condense and freeze in it. As water changes state, it releases a lot of energy, which can warm surrounding gases and solids. This prolongs the phase change time. It really is a messy business. But there is another way to model it. Statistically. Build an array of phase change data points that correspond to the local RH, temperature and maybe air pressure. Then look at the probabilities. You will generally find that the high risk times i.e. condensation does not happen very often, or for very long. It is also worth remembering that a wall has surface temperatures slightly lower than internal air temperature on the inside, and often much higher than outside air temperature on the outside where it is heated by the sun. Our old mate @Ed Davies wrote and interesting bit about humidity on his website. https://edavies.me.uk/2017/03/vapour/
  19. Kingspan Thermafloor TF70 has a k-value of 0.022 W/m.K. So 0.1 m will have a U-value of 0.22 W/m².K. In today's terms and energy prices, that could make it quite expensive to heat the area. This does depend on how large it is, what the losses are for the space, how often you heat it and what flow temperatures you use. As you are considering digging up the floor, probably worth doing some proper costings to see what is best.
  20. My lunch.
  21. It has 1819 kJ of energy, that is 0.5 kWh. So you need about 4 a day to keep you sustained. No idea what they cost but heating a house will be cheaper. Energy is really cheap. Found a price, £1.90 so £3.60 a day.
  22. Dig out as far as you can then gabions. We have a new member @Steves who does this sort of thing.
  23. Greggs don't make pasties.
  24. They are up globally. But we did vote to be worse off in the EU referendum, so only as expected.
  25. Easy, take the accountancy approach. Convert the kCal to kWh and compare it to how much energy is needed to heat your house. Or just get a second job cheffing, we hardly eat a thing all day, even though freshly cooked bacon makes me feel hungry.
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