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SteamyTea

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Everything posted by SteamyTea

  1. SteamyTea
    Will need a lot more information. Size of the house will help. Have a hunt around on here for Jeremy Harris' heat loss spreadsheet.
  2. SteamyTea
    Post up a picture.
  3. SteamyTea
    That is about half my usage, and if I had a heat pump, it would cover it all. Trouble is, I would have to cover my neighbours roofs in PV to supply just me. Should have jumped on the 'Roof for Rent' scheme and that 200 kWh would have earned me around £120.
  4. SteamyTea
    22 kW
  5. SteamyTea
    That is the difference between us.
  6. SteamyTea
    Wot @JamesPa says. It is worth getting an IR thermometer and you can get fairly good weather data for your region from WeatherUndeground.
  7. SteamyTea
    Some of these inverters have a minimum load, wired in one that would shut down unless it was greater than 200W. Try a heavy load on it.
  8. SteamyTea
    is that true, it is a link to the Daily Mail. Or did she really just prefer her internet connected vibrator.
  9. SteamyTea
    You are going to have to post up a tutorial on this one day. I intend to work out how to make an ESP2866 (only because I have some) go to sleep until the LED on my meter flashes, then send the data to a hard drive somewhere probably on my TOR webserver, which is working incredibly reliably so far. Triple encrypted all the way, and no need to pay anyone for web hosting.
  10. SteamyTea
    If your system is zoned, one of the water circuits will have the smallest volume. If that volume is smaller than the ASHP can reliably handle, then you will get a lot of short cycling of the ASHP. Get rid of the TRV in the summer, they are not needed.
  11. SteamyTea
    Are you using TRVs. Have you checked that there is enough volume in the smallest circuit.
  12. SteamyTea
    Glued two small bits of ply to the rough side of a paving slab. I did no cleaning, of the slab. Just put it in the house to warm up. The ply was just as I cut it on the circular saw, did not spray it with water. Glued and clamped it overnight. One sample was untreated face down, the other was grain down (sawn edge). Popped it back outside and shall just leave it to weather. So hope this event reminder remembers to remind me in a year's time, which will be the 19/01/2024.
  13. SteamyTea
    They show lovely cooling curves. May just be an offset. You can use anomalies. Take the mean and subtracted the variables. Was the kitchen extractor left on.
  14. SteamyTea
    May be loosing twice the amount of energy though. Temperature is not heat (the old word for energy). But yes, it is really only worth comparing within the same temperature ranges, and then the energy losses will be the same, one the differences in form have to accounted for. A wood burner will (expletive deleted) it up though, half the time it is so hot the energy is going up the chimney, the other half of the time, it is cold, and draws air back down the chimney.
  15. SteamyTea
    Like a present on Christmas day. The novelty soon wears off.
  16. SteamyTea
    Yes. Why it is such fun. The trick is to ask a question that can be answered, and tested.
  17. SteamyTea
    That does seems to need improvement.
  18. SteamyTea
    Water is the blowing agent for most PU formulations, tough if it was really cold, tat would stop it as well.
  19. SteamyTea
    May have.
  20. SteamyTea
    Not trying to run a heat pump purely off the PV, it reduces the grid imports. Actually don't need an diverter for that as any PV generation will go to the nearest load anyway.
  21. SteamyTea
    Put a bit of randomised multipliers into it, plus or minus 5%.
  22. SteamyTea
    It becomes a statistical exercise. The idea is to run the heavy load at the times when PV generation are most likely to be high i.e. hour and a half either side of local noon, or depending on your PV orientation, whatever time you get maximum generation. Then the heavy load will probably use all the generation and import less. This is part of the reason that oversizing PV is not always the most economical thing to do.
  23. SteamyTea
    Could reduce that to an effective 2.5p/kWh
  24. SteamyTea
    Yes, mainly to ensure than it works, could be fortnightly. That way, if any problems, you get prior notice. Really only needs to be on for an hour. If you heated your DHW with the ASHP, you would use less energy. Turning everything off when not needed is a good move. I have reduced my parasite loads, some hours I draw no power at all.
  25. SteamyTea
    My Raspberry Pis I use for monitoring seem to use so little that they don't register. A Micro Contoller needs about 0.25W, or about 2 kWh a year. Still a quid.
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