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SteamyTea

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Everything posted by SteamyTea

  1. Almost, but alternatives and replacements come into play. Picking the right substitute is the hard part.
  2. What makes you think any architect will know about insulation (above BRs) and UFH, let alone the performance difference between them.
  3. It's really as simple as thinking about the analogous mechanical components Inductors and Capacitors Is this how cheap 230V LEDs are powered?
  4. So all that government aid used, in part, didn't happen. A major part to the arguement about leaving the EU was to allow the UK to trade nimbly and quickly to a changing commercial environment. We are not exactly seeing that happen. What we have seen is Sterling loose value against major currencies, delays in goods being delivered, reduced workforce in some areas of construction, etc etc. What we have not seen, nor did we see in the run up to fully leaving was a boost to the economy. That reduction in economic power, and the associated drop in business confidence, lays firmly at the feet of BREXIT. Blame other issues as much as you like, but deep down you know that being commercially isolated from our biggest market is hurting, and will hurt for the rest of our lives. End of.
  5. A bit of 'post purchase justification' going on here.
  6. Interested, but don't understand the details much.
  7. If that is all the stream is delivering, or all the pipe can deliver.
  8. Not if the mass flow rate is the same. That is where the energy is, not the wheels. 1 litre a second is very low.
  9. Well that is because we cannot blame the EU anymore. Some people will always blame an existential threat, weather real or imagined. I think Germany was the world's fourth largest market for PV, we do not have easy access to that market anymore, we are now in completion with them because of a quirk of geography (near Rotterdam). But I think the vast majority is now installed in larger PV farms and not on domestic roof tops. Low carbon generation does not care if it is made in Mayfair or Grimsby.
  10. The £1500 have any on buying (some) EVs has been stopped today. No bad thing really.
  11. Around half my current DHW needs. There is an advantage of having a proper gravity fed system with a tank in the loft, rather than draw in cold water from the ground all the time.
  12. The problem with that is, without some storage to act as a buffer, you have to match supply and demand. As an EV is basically a storage device with wheels and seats, if it can accept small, low power, sips of energy, then that is the better way to do it. It is also worth comparing utility values. If, with a car it costs x to get to work, and you earn y. You may be better off washing clothes during the day (and hang them on a line to dry).
  13. Or make roof integrated systems from natural resins and reinforcements. May see the name Tufnol resurface.
  14. 9 days off six years since we voted to leave the EU, weren't we promised that things would be cheaper and more plentiful. £350m a week should buy a lot of PV.
  15. Not sure of the market has 'blown up', whatever that means. But there are some chancers about. https://www.ebay.co.uk/itm/233627688029
  16. Bigger than 0 Pa. That will be less suction, not more.
  17. Ski lift, it may snow oneday.
  18. What are the maximum flow rates?
  19. Didn't using 2 of the 3 phases used to be called 'split phase. Was fairly common in small farms. https://www2.theiet.org/forums/forum/messageview.cfm?catid=205&threadid=38062
  20. Yes But if the temperature is no more than say 14⁰C in the summer, and closer to 8⁰C in the winter, all year round you are losing heat to the ground. Even if that heat is free, it is still leaking out. Don't matter how stable the temperature is, if it is too cold, it is too cold. The Atlantic around here is stable, still not going in without a very thick wetsuit.
  21. With regards to insulation (Q1), Yes loads. It is a brave assumption that the ground under a house will act as a thermal store. Even if it did, you have supplied the energy to heat it. GSHPs work on the grounds that they extract the energy in the ground being the mean of the annual air temperature, so around 12⁰C for me. Always ask the question 'why is wine kept in a cellar'. It ain't because it is (expletive deleted)ing hot.
  22. An even cleverer one was Fourier.
  23. Because we are the chosen ones and it keeps the Moonmaids pretty.
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