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  1. M

    Was a cash buyer for a house 8 years ao. possibly missing building reg for removed chimney breast. Will it make it impossible to sell?

    I had a similar situation, left it, and whilst it was mentioned by the buyers surveyor, they didn't ask any additional questions, or ask for any insurance
  2. M

    Was a cash buyer for a house 8 years ao. possibly missing building reg for removed chimney breast. Will it make it impossible to sell?

    No worries about the PW act then! Taking up a floorboard or 2 and having a look at what they did is probably a good idea, will give you a chance to see if they put any support in at all, and whether it is suitable
  3. M

    Concrete Slab mix quantities

    A building that size needs to be built according to the building regs, and should therefore have insulation on the slab
  4. M

    "Net Zero"

    I wouldn't hold your breath
  5. M

    "Net Zero"

    Not very significant compared with the avoidable emissions I can't vouch for the veracity of these figures, but to give a sense of scale: Humanity's annual carbon emissions through the burning of fossil fuels and forests, etc., are 40 to 100 times greater than all volcanic emissions
  6. M

    "Net Zero"

    Well yes, and the cracking of oil into petrol takes a vast amount of power, as does the compression and distribution of LPG. Hydrogen is not perfect by any means, and low carbon Hydrogen is impossible without a significant amount of low carbon power
  7. M

    "Net Zero"

    I think it's got a great future, as it can be dialled up and down depending on availability of excess power from renewables.
  8. M

    "Net Zero"

    At the moment it uses more. Quoted efficiencies are between 70-85%, with some small scale researchers getting upwards of 90% in new processes. "A kilogram of hydrogen holds 39.4 kWh of energy, but typically costs around 52.5 kWh of energy to create via current commercial electrolyzers"
  9. M

    "Net Zero"

    I dont disagree with you at all
  10. M

    "Net Zero"

    Whilst hydrogen is a smaller molecule, and therefore leaks a bit more than natural gas, it also disperses much more readily, and therefore is less likely to build up into explosive levels than natural gas
  11. M

    "Net Zero"

    About 250-300 kwh per tonne apparently, and I guess the left over infrastructure in the North Sea from the oil and gas extraction would be quite useful. CO2 compression uses about a third of that, so in suitable strata, the gas could be pumped in directly. CO2 is pretty soluble, so you wouldn't...
  12. M

    "Net Zero"

    No idea of the veracity of this, but I found this in a press release from ICL: "This is far less than leading estimates by academic and industry groups of what is available, which suggest there is more than 10,000 Gt of CO2 storage space globally." Now that is a mind boggling figure!
  13. M

    "Net Zero"

    I'm sure it would be possible, but efficiency is key for all of these choices, and I reckon there would just be too many losses during that process Not sure how much space our oil and gas extraction has left, but I reckon there is a fair bit of space down there. I think the real hope is for...
  14. M

    "Net Zero"

    You are obviously correct, but if you remove the carbon from carbon dioxide, it becomes much less harmful, hence why its referred to as carbon capture, and not carbon dioxide capture. I'm not actually sure what form the carbon is captured in, so carbon dioxide capture maybe more accurate if...
  15. M

    "Net Zero"

    This is pretty much the theory behind biomass generated electricity. Few problems with that however!
  16. M

    "Net Zero"

    No, and sorry if I wasn't clear. We can't capture carbon from most users of natural gas, as they are too small. However, if we can capture the carbon from large scale producers of it, ie power stations, and hydrogen plants, who in turn produce carbon free energy, that carbon can be captured and...
  17. M

    "Net Zero"

    A lot of money is being invested in DIRFT and similar facilities, and one of the main factors in favour of HS2 is removing passengers from the WCML so that more freight can hauled.
  18. M

    "Net Zero"

    The main idea, as I understand it, is to pump it I to empty gas fields, which is somewhat ironic IMO CCS will only work when captured at source, and then, only when CO2 is produced in significant quantities, so power stations, and hydrogen production sites. Fitting CCS to a car or a domestic...
  19. M

    "Net Zero"

    If he had, you would have been able to work out that the hydrogen weighed less than the air it had displaced
  20. M

    "Net Zero"

    You can work out the weight of a gas using the gas laws. Each molecule of CO2 is a known weight, so if you know how much there is, such as PPM, you can work out the weight
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