3 ms·

1kW/h for 3 hours or 3kw. 400g plastic to 286g oil. Seems extremely carbon negative.

danuker 4y ago
It can't be carbon negative if you burn the resulting oil. The carbon in the atmosphere goes up. Ths technology is pointless. The carbon can be sequestered as plastic.
- Cthulhu_ 4y ago
  But they don't like doing that because it does break down over time and starts leeching into the soil underneath. Which can be caught and prevented, of course, but nobody wants to build a landfill like that. I too think it should be sequestered, ideally in fairly stable conditions; worst case, it stays there for the next thousand years and the plastic breaks down into whatever it does (entropy etc). But in a good case, they discover a means to effectively reuse, recycle or break down plastics, so that the sequestered plastic can be processed. But it's not economically viable, not when it's cheaper to export it AND get paid by counties and the government (in the form of subsidies) for the box-ticking exercise of separating it out and calling it recycled.
  - lazide 4y ago
    Huh? Everyone already builds landfills like that. They have to be clay lined anyway and leachate collected for a number of reasons.
pfdietz 4y ago
> kW/h (tears hair out)
- Oxidation 4y ago
  Maybe the machinery takes 3 hours to spool up to generating 1kW?
  - deadbeeves 4y ago
    No, it gradually increases its consumption at a rate of 1 kW every hour, thus at the 3-hour mark it's consuming 3 kW.
    - Oxidation 4y ago
      Gosh. Better make sure you put it on a timer switch or that's going to get expensive.
- _ea1k 4y ago
  Still not as bad as kwh/hr. That one is showing up on some car UIs now.
  - osigurdson 4y ago
    Why can’t we just use the right unit for energy - Joule? A battery capacity should be stated in MJ / GJ.
    - danuker 4y ago
      An hour is a popular unit for me personally. I measure my work and plan my day in hours (since pretty much all clocks use hours, not kiloseconds). I don't use seconds very much (with the exception of Unix epoch seconds, or a short experiment). I can't divide by 3600 in my head. I can, however, multiply by 1. Therefore, Watt-seconds (AKA Joules) are not as useful to me as Watt-hours and kiloWatt-hours.
      - osigurdson 4y ago
        Natural gas is consumer priced in GJ and seems to work fine. Eventually we would just develop and intuition about number of K/M/G J in various battery sizes without the complex/ugly kwh unit.
    - _ea1k 4y ago
      I hear this occasionally, but what are the benefits relative to kwh?
      - osigurdson 4y ago
        It basically comes down to stating things in their simplest and most correct form. It is like using 75/25 to express the number 3. When expressing an energy value, use the right unit (Joule) not a derived unit multiplied by another quantity to get back to the original.
  - pfdietz 4y ago
    That's at least dimensionally correct.
deleted 4y ago
[deleted]

It can't be carbon negative if you burn the resulting oil. The carbon in the atmosphere goes up. Ths technology is pointless. The carbon can be sequestered as plastic.

Cthulhu_ 4y ago
But they don't like doing that because it does break down over time and starts leeching into the soil underneath. Which can be caught and prevented, of course, but nobody wants to build a landfill like that. I too think it should be sequestered, ideally in fairly stable conditions; worst case, it stays there for the next thousand years and the plastic breaks down into whatever it does (entropy etc). But in a good case, they discover a means to effectively reuse, recycle or break down plastics, so that the sequestered plastic can be processed. But it's not economically viable, not when it's cheaper to export it AND get paid by counties and the government (in the form of subsidies) for the box-ticking exercise of separating it out and calling it recycled.
- lazide 4y ago
  Huh? Everyone already builds landfills like that. They have to be clay lined anyway and leachate collected for a number of reasons.

pfdietz 4y ago

> kW/h (tears hair out)

Oxidation 4y ago
Maybe the machinery takes 3 hours to spool up to generating 1kW?
- deadbeeves 4y ago
  No, it gradually increases its consumption at a rate of 1 kW every hour, thus at the 3-hour mark it's consuming 3 kW.
  - Oxidation 4y ago
    Gosh. Better make sure you put it on a timer switch or that's going to get expensive.
_ea1k 4y ago
Still not as bad as kwh/hr. That one is showing up on some car UIs now.
- osigurdson 4y ago
  Why can’t we just use the right unit for energy - Joule? A battery capacity should be stated in MJ / GJ.
  - danuker 4y ago
    An hour is a popular unit for me personally. I measure my work and plan my day in hours (since pretty much all clocks use hours, not kiloseconds). I don't use seconds very much (with the exception of Unix epoch seconds, or a short experiment). I can't divide by 3600 in my head. I can, however, multiply by 1. Therefore, Watt-seconds (AKA Joules) are not as useful to me as Watt-hours and kiloWatt-hours.
    - osigurdson 4y ago
      Natural gas is consumer priced in GJ and seems to work fine. Eventually we would just develop and intuition about number of K/M/G J in various battery sizes without the complex/ugly kwh unit.
  - _ea1k 4y ago
    I hear this occasionally, but what are the benefits relative to kwh?
    - osigurdson 4y ago
      It basically comes down to stating things in their simplest and most correct form. It is like using 75/25 to express the number 3. When expressing an energy value, use the right unit (Joule) not a derived unit multiplied by another quantity to get back to the original.
- pfdietz 4y ago
  That's at least dimensionally correct.

deleted 4y ago

[deleted]