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SteamyTea

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Everything posted by SteamyTea

  1. SteamyTea
    Pretty sure that 4 mm is what comes out the back of the modules.
  2. SteamyTea
    Don't you mean 3 kWh a day? 3 kW of constant power would be 72 kWh a day.
  3. SteamyTea
    https://www.solar-wind.co.uk/info/dc-cable-wire-sizing-tool-low-voltage-drop-calculator There you go. A DC cable calculator. Just plug in the details and find that standard 4mm cable will be fine.
  4. SteamyTea
    Says on the spec sheet that the maximum solar I put is 4.5 kW. 14 of your modules will be 5.6 kW. I may have misunderstood the spec, hard to read on my phone.
  5. SteamyTea
    The open circuit voltage is a gnats under 50 V. So 14 modules in series will give you 700 V. What inverter/s do you intend to use?
  6. SteamyTea
    Do you have a data sheet for these modules. There is usually basic specifications printed on the back of them.
  7. SteamyTea
    Try this https://wind-power-program.com/ Original worked for me.
  8. SteamyTea
    May have trouble connecting it to the grid. This may help with windpseeds https://wind-power-program.com/UK_wind_speed_database.htm
  9. SteamyTea
    Most people are fascinated by PV generation for the first few weeks, then get on with life. Most inverters log the data, some even have Bluetooth built in and you view via a simple application on you phone/PC. To be honest, if you do not have a shading issue, don't bother with them. Sell them on eBay.
  10. SteamyTea
    Yes, they are of use when shading is a problem. But as this is an, as yet, uninstalled system, on a new roof, I was wondering if shading was going to be a problem.
  11. SteamyTea
    Maybe this is a dumb question, but do you actually need optimisers?
  12. SteamyTea
    The lower temperature that the heat pump may be working at will increase the time it takes for scale to form in the cylinder, but form it will. Get the best water softener you can. Having lived in Buckinghamshire, where tap water has chalk in it my default, a water softener is a cheap option.
  13. SteamyTea
    @gramos Are you doing this install yourself? If so, be very careful. PV is, as @ProDave says, deadly.
  14. SteamyTea
    Driving up to Bucks and Down to Cornwall all the time now, quite happy to deviate to yours and set fire to it.
  15. SteamyTea
    My SW side has suffered from the wind, rain and sun, but it is 34 year old. So far only cracked in one place that caused a problem. Easily repaired. I think it has to become maintenance item, so just accept that.
  16. SteamyTea
    Isn't this just bubble wrap with tin foil on it.
  17. SteamyTea
    I don't think in the UK it will make much difference. Not as if we high temperatures, with associated high amount of AH. We basically have a very stable climate. RH and Temperature is in a small window compared to most parts of Northern Europe. More a case of don't you wet systems when building a house.
  18. SteamyTea
    Whoops forgot to post link in. Any would probably do though. Possibly. Could be an easy way to check air leakiness.
  19. SteamyTea
    Yes it will, apart from what is lost via noise. A room does not hold much air, by mass, in it, and it only takes 1 kJ.kg-1.K-1 to heat air up. A 300 W heater can heat 10 kg of air (about 8 m3) by 10 K up in 333 seconds (5.5 minutes). You can work it out as you know the room size and the RH levels. Use this calculator to work out how much (little really) water is mixed with the air. Latent heat of fusion for water is 2264 kJ.kg-1.
  20. SteamyTea
    Some rise in air temperature will come from the latent heat of fusion, gas to liquid, of the water. Most will probably come from the electrical input of the dehumidifier. If it is drawing 1 kW (or whatever), it is the same as putting in a 1 kW fan heater. That is why I laugh when I see an portable A/C unit in the back of a shop. All it is doing is heating the place up.
  21. SteamyTea
    How much DHW do you typically use. May be worth measuring it or only default figures can be used. The cheapest option will be to use less.
  22. SteamyTea
    If only I could eat chocolate, I would be out hunting them down. Chocolate may not taste as good now as it did to me 35 years ago.
  23. SteamyTea
    More of a fine isn't it, tax usually only takes bite out, leaving you the rest. I often wondered why they did not make large bars from the same recipe as the green triangles.
  24. SteamyTea
    I thought that, but seem to remember that he did not want to sell it as he felt the ongoing work next door would reduce the value. "do not spoil the ship for a ha'porth of tar
  25. SteamyTea
    My gut feeling is that option 1 is the better one, but as @IanR says, it will need a VCL if bridging the warm, moist interior with the cold exterior. More detail.
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