Jump to content

mogandave

Advanced Member
  • Posts

    16,317
  • Joined

  • Last visited

Posts posted by mogandave

  1. Using solar and batteries, you have to have twice the capacity of solar, because how ever much power comes out of the batteries at night, must be put back in during the day. 

     

    Using wind and batteries, you have to have twice the capacity of wind, because how ever much power comes out of the batteries at night (when the wind typically dies), must be put back in during the day. 

     

    Backing up solar with wind and visa-versa, you have to double capacity again. 

     

    Again, How long do we want the battery backup to work?

  2. 7 minutes ago, placeholder said:

    It would certainly be far better if emissions were drastically cut.

     

    Actually that would be 4 days. Which is why interconnectivity is important. The wider the grid, the more resilient it is against such events.

    No, in the morning the batteries have already bee. used for 10 hours. 

     

    But yes, as long as you have fossile fuels and or nuclear to back it up it’s great. 

     

  3. 3 minutes ago, placeholder said:

    Much of this depends on the connectivity of the grid. The wider the range of power sources that can be drawn on, the less important the fossil fuel backup becomes.  As I have noted before, here is an article from Vox that explains research from M.I.T. that delves deeply into the issues. The conclusion that research came to was that it would take batteries with a cost of $20 per kwh of capacity to reach 100%. These batteries can generate power for 100 hours vs. at most 8 hours for lithium. But to reach 95%, batteries would only need to have a cost of $151 per kwh. At the time, it was expected that this wouldn't happen before 2030 at the earliest. But has been consistently been the case when it comes to predictions about batteries, progress has run way ahead of schedule. Even lithium batteries have now broken that barrier. And iron-air batteries can be manufactured for a cost of $20 per kwh of capacity.

    Getting to 100% renewables requires cheap energy storage. But how cheap?

    https://www.vox.com/energy-and-environment/2019/8/9/20767886/renewable-energy-storage-cost-electricity

    And how long, and how much power does it take to charge them?

     

    Still, at 100 hours, if it starts raining in the morning, and rains for three days it’s done. 

     

     

  4. 22 minutes ago, placeholder said:

    As I pointed out previously with evidence to back it up, the cost of coal and LNG rose sharply. And nuclear power plants have had huge cost overruns. What's more, while solar and wind power are now dominating in the construction of new power plant capacity, they still compose a fraction of the installed power base.

    And as has been shown countless times, the articles you link to generally do not include what is driving costs. 

     

    Every solar and or wind installation must be backed up with fossil fuel or nuclear.

     

    How many days/weeks/months of capacity should a a battery backup provide?

     

  5. 12 minutes ago, placeholder said:

    No, I back up my arguments with evidence or use it to show that the arguments advanced by others are false. 

    As for the storage issue. I already posted evidence of a company that has produced low cost iron-air batteries that cost $20 per kwh of capacity. They have almost completed their 3/4 of a billion dollar manufacturing plant to put the finished product into large scale use. It's called Form Energy.

    And there are plenty of other contenders including companies manufacturing zinc-based storage batteries. Also, Natron, is now manufacturing sodium based batteries which are cheaper than lithium, charge faster, and have a wider range of temperature tolerance. I can only post this information. I can't help it if you don't read it.

    This must be why the cost of electricity has plummeted…

    • Confused 1
  6. 3 minutes ago, pomchop said:

     

     

    Agree if your sex habits are high risk like guys who don't or won't wear condoms you should ease up on the intercourse....far as i know there has never been a gal that got pregnant...other than IVF.....without a guy being involved.....the problem as most guys have known all their lives is we are generally going to do all sorts of things to get laid...like get the gal drunk , make all kinds of "promises" etc.....but if the gal gets pregnant it's not my problem and the gal should be forced to have a baby that neither the guy or gal ever wanted?

     

    How about if all the old men who make the laws let the girl and guy and their families and doctors decide the issue and not shove their beliefs down everyones throat?

    That’s fine, but why should I have to pay for it? 

     

     

  7. 7 minutes ago, JimTripper said:

    Has anyone ever bought a suit from one of those indian tailor shops?

     

    How do those places make any money? Even in bkk I don't think too many people wear suits, even in the business district.

    I saw quite a few when I was working. Saw a few in the bank the other day.

     

    That said, most of the shops are for tourists. 

     

  8. 8 minutes ago, stoner said:

     

    i have seen posted on here literally thousands of times now how trump is a fascist. if that ends up being the case i suspect millions of americans and democtrats will disappear if he wins the election. 

     

    never to be seen from again. murdered by a fascist dictator.....o wait that sounds absolutely crazy and will never happen in a million years. 

     

     

    Well if you saw it posted on here literally thousands of times it must be true. 

     

    And he did have millions of Democrats killed last time, right?

    • Agree 1
  9. 5 minutes ago, YorkshireTyke said:

    Not helping the OP but this thread seems to have the know how I need.

     

    I'm going to have my roof space insulated, one storey villa with tiled roof but no insulation in the roof space, villa about 10-12 years old.

     

    Looking at the SCG or Sunshield Extra Cool from Homepro, one is R-38 one is R-37 and a bit cheaper, does it make a difference ?

     

    One is 3'' and one 6'' thick, I prefer to go with 6''

     

    The main Q is I'm not doing it myself so getting some Thai chaps in to give me a quote. The guy who came today said 6'' is more difficult to lay, takes longer so labour will be more. He says most people use 6'' in the walls, only use 3'' in the ceiling. Any thoughts please?

    You’d get better value from vents and a fan in the attic  unless you already have them. 

  10. 3 minutes ago, Danderman123 said:

    It looks like you survived the Clintons and Biden okay. 

     

    It also looks like you are worrying about nothing.

     

    As for surviving Trump, he contributed to the deaths of one million Americans from COVID. 

    You mean when he tried to shut down flights from China and was attacked from the left? 

     

    Or when he expedited the development of the vaccines Biden took credit for?

    • Like 1
  11. 5 minutes ago, Chomper Higgot said:

    I still haven’t got a clue what you are banging on about.

     

    Saudi Arabia and Israel are in close agreement on Turkish interventions in the Middle East.

     

    UAE and Israel armed forces conduct joint operations.

     

    Netanyahu played a pivotal role in Qatari aid to Hamas.

     

    So please tell us what point you are trying to make.

    That’s what I thought, thanks!

  12. 8 minutes ago, Bkk Brian said:

    Indeed with Qatar who also funds Hamas being a major one although I'm sure Qatar will deny being anti Israel

     

    Qatar’s ties to US universities scrutinised amid rise in antisemitism

    Qatar has emerged as the largest foreign donor to US universities, contributing $5.1bn since 1986

    In the wake of October 7, scrutiny of Qatar’s relationship with Hamas and the Islamist Muslim Brotherhood has intensified.

    Texas A&M University last month announced that it would close the satellite campus it established in Doha in 2003. The university cited “regional instability” for its decision, but it has also faced unwanted publicity since October 7 about its patron’s ties to Hamas.

    https://www.ft.com/content/d0a16f75-8b05-4ff9-b5f1-d473d7f5a704

    https://archive.ph/9OV5F

     But that’s just the Qatari leadership, the Qatari people actually love Israel, it’s the Qatari people that love Israel that donate to universities in the US. 

     

    IMG_0427.thumb.jpeg.1d6c67175533c5e1c5138452c1bd4fed.jpeg

     

     

    • Like 1
  13. 3 minutes ago, Chomper Higgot said:

    As in a footy tournament?

    Footy tournament. is that an LBGT thing? 

    3 minutes ago, Chomper Higgot said:

     

    or is there some other relevance to you question?

     

    If you are going to claim they are not anti-Israel, then putting effort into showing their donations is pointless. 

     

    Even once it’s show. to be true, you’ll just excuse it and claim it does not affect the coursework the university offers. 

    • Confused 1
×
×
  • Create New...