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  • SUPERCRITICAL CO2 POWER CYCLES

    From Fred Bloggs@21:1/5 to All on Tue Oct 31 07:23:49 2023
    Main advantage is a major reduction in physical size and carbon footprint of components. Efficiency is better too, but not radically so.

    DOE page with breakdown of technology:

    SUPERCRITICAL CO2 POWER CYCLES

    https://netl.doe.gov/node/7548

    Mass science media overview quick read:

    A Tiny Supercritical Carbon Dioxide Turbine Can Power 10,000 Homes

    https://cleantechnica.com/2023/10/30/a-tiny-supercritical-carbon-dioxide-turbine-can-power-10000-homes/

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From John Larkin@21:1/5 to bloggs.fredbloggs.fred@gmail.com on Tue Oct 31 07:54:34 2023
    On Tue, 31 Oct 2023 07:23:49 -0700 (PDT), Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote:

    Main advantage is a major reduction in physical size and carbon footprint of components. Efficiency is better too, but not radically so.

    DOE page with breakdown of technology:

    SUPERCRITICAL CO2 POWER CYCLES

    https://netl.doe.gov/node/7548

    Mass science media overview quick read:

    A Tiny Supercritical Carbon Dioxide Turbine Can Power 10,000 Homes

    https://cleantechnica.com/2023/10/30/a-tiny-supercritical-carbon-dioxide-turbine-can-power-10000-homes/


    There's no shortage of working fluids for driving turbines. For a
    while, mercury vapor was the next big thing.

    Why does the article include a political rant?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From John Larkin@21:1/5 to bloggs.fredbloggs.fred@gmail.com on Tue Oct 31 07:58:19 2023
    On Tue, 31 Oct 2023 07:23:49 -0700 (PDT), Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote:

    Main advantage is a major reduction in physical size and carbon footprint of components. Efficiency is better too, but not radically so.

    DOE page with breakdown of technology:

    SUPERCRITICAL CO2 POWER CYCLES

    https://netl.doe.gov/node/7548

    Mass science media overview quick read:

    A Tiny Supercritical Carbon Dioxide Turbine Can Power 10,000 Homes

    https://cleantechnica.com/2023/10/30/a-tiny-supercritical-carbon-dioxide-turbine-can-power-10000-homes/

    That's a hilarious web site.

    https://cleantechnica.com/2023/10/31/solar-cannonball-continues-at-a-record-snails-pace/

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Fred Bloggs@21:1/5 to John Larkin on Tue Oct 31 09:57:09 2023
    On Tuesday, October 31, 2023 at 10:55:06 AM UTC-4, John Larkin wrote:
    On Tue, 31 Oct 2023 07:23:49 -0700 (PDT), Fred Bloggs <bloggs.fred...@gmail.com> wrote:

    Main advantage is a major reduction in physical size and carbon footprint of components. Efficiency is better too, but not radically so.

    DOE page with breakdown of technology:

    SUPERCRITICAL CO2 POWER CYCLES

    https://netl.doe.gov/node/7548

    Mass science media overview quick read:

    A Tiny Supercritical Carbon Dioxide Turbine Can Power 10,000 Homes

    https://cleantechnica.com/2023/10/30/a-tiny-supercritical-carbon-dioxide-turbine-can-power-10000-homes/
    There's no shortage of working fluids for driving turbines. For a
    while, mercury vapor was the next big thing.

    Why does the article include a political rant?

    Politics is part of their coverage.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Fred Bloggs@21:1/5 to John Larkin on Tue Oct 31 10:00:02 2023
    On Tuesday, October 31, 2023 at 10:58:53 AM UTC-4, John Larkin wrote:
    On Tue, 31 Oct 2023 07:23:49 -0700 (PDT), Fred Bloggs <bloggs.fred...@gmail.com> wrote:
    Main advantage is a major reduction in physical size and carbon footprint of components. Efficiency is better too, but not radically so.

    DOE page with breakdown of technology:

    SUPERCRITICAL CO2 POWER CYCLES

    https://netl.doe.gov/node/7548

    Mass science media overview quick read:

    A Tiny Supercritical Carbon Dioxide Turbine Can Power 10,000 Homes

    https://cleantechnica.com/2023/10/30/a-tiny-supercritical-carbon-dioxide-turbine-can-power-10000-homes/
    That's a hilarious web site.

    https://cleantechnica.com/2023/10/31/solar-cannonball-continues-at-a-record-snails-pace/

    He should have just simulated it. There are real time irradiation readings available:

    https://solcast.com/solar-radiation-map/north-america/2023-10-18

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jeroen Belleman@21:1/5 to John Larkin on Tue Oct 31 19:26:08 2023
    On 10/31/23 15:54, John Larkin wrote:
    On Tue, 31 Oct 2023 07:23:49 -0700 (PDT), Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote:

    Main advantage is a major reduction in physical size and carbon footprint of components. Efficiency is better too, but not radically so.

    DOE page with breakdown of technology:

    SUPERCRITICAL CO2 POWER CYCLES

    https://netl.doe.gov/node/7548

    Mass science media overview quick read:

    A Tiny Supercritical Carbon Dioxide Turbine Can Power 10,000 Homes

    https://cleantechnica.com/2023/10/30/a-tiny-supercritical-carbon-dioxide-turbine-can-power-10000-homes/


    There's no shortage of working fluids for driving turbines. For a
    while, mercury vapor was the next big thing.

    Why does the article include a political rant?


    Better CO2 than mercury. A mercury leak would be a nightmare.

    That said, I don't know why CO2 would be so much better than
    steam. The article doesn't really say why, just that it is.
    Given that CO2 is cheap and plentiful, I have trouble believing
    that it hasn't been tried before. If it's so good, why did
    nobody use it until now? A 10% gain in efficiency and a factor
    of ten in size is a big deal! Electricity generating companies
    are no fools. If it's so much better, why weren't they doing it?

    Jeroen Belleman

    --- SoupGate-Win32 v1.05
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  • From Fred Bloggs@21:1/5 to John Larkin on Tue Oct 31 12:09:17 2023
    On Tuesday, October 31, 2023 at 10:55:06 AM UTC-4, John Larkin wrote:
    On Tue, 31 Oct 2023 07:23:49 -0700 (PDT), Fred Bloggs <bloggs.fred...@gmail.com> wrote:

    Main advantage is a major reduction in physical size and carbon footprint of components. Efficiency is better too, but not radically so.

    DOE page with breakdown of technology:

    SUPERCRITICAL CO2 POWER CYCLES

    https://netl.doe.gov/node/7548

    Mass science media overview quick read:

    A Tiny Supercritical Carbon Dioxide Turbine Can Power 10,000 Homes

    https://cleantechnica.com/2023/10/30/a-tiny-supercritical-carbon-dioxide-turbine-can-power-10000-homes/
    There's no shortage of working fluids for driving turbines. For a
    while, mercury vapor was the next big thing.

    Why does the article include a political rant?

    More background on sCO2:

    https://en.wikipedia.org/wiki/Supercritical_fluid

    You can see CO2 is one of the easier gases to work with from Table 1.

    Interesting application to refrigeration generally, heat pumps specifically:

    https://en.wikipedia.org/wiki/EcoCute

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From John Larkin@21:1/5 to bloggs.fredbloggs.fred@gmail.com on Tue Oct 31 13:29:55 2023
    On Tue, 31 Oct 2023 12:09:17 -0700 (PDT), Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote:

    On Tuesday, October 31, 2023 at 10:55:06?AM UTC-4, John Larkin wrote:
    On Tue, 31 Oct 2023 07:23:49 -0700 (PDT), Fred Bloggs
    <bloggs.fred...@gmail.com> wrote:

    Main advantage is a major reduction in physical size and carbon footprint of components. Efficiency is better too, but not radically so.

    DOE page with breakdown of technology:

    SUPERCRITICAL CO2 POWER CYCLES

    https://netl.doe.gov/node/7548

    Mass science media overview quick read:

    A Tiny Supercritical Carbon Dioxide Turbine Can Power 10,000 Homes

    https://cleantechnica.com/2023/10/30/a-tiny-supercritical-carbon-dioxide-turbine-can-power-10000-homes/
    There's no shortage of working fluids for driving turbines. For a
    while, mercury vapor was the next big thing.

    Why does the article include a political rant?

    More background on sCO2:

    https://en.wikipedia.org/wiki/Supercritical_fluid

    You can see CO2 is one of the easier gases to work with from Table 1.

    Interesting application to refrigeration generally, heat pumps specifically:

    https://en.wikipedia.org/wiki/EcoCute

    10 Mpa is about 1500 PSI. Freon systems run around 200.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Fred Bloggs@21:1/5 to John Larkin on Tue Oct 31 16:49:34 2023
    On Tuesday, October 31, 2023 at 4:30:28 PM UTC-4, John Larkin wrote:
    On Tue, 31 Oct 2023 12:09:17 -0700 (PDT), Fred Bloggs <bloggs.fred...@gmail.com> wrote:
    On Tuesday, October 31, 2023 at 10:55:06?AM UTC-4, John Larkin wrote:
    On Tue, 31 Oct 2023 07:23:49 -0700 (PDT), Fred Bloggs
    <bloggs.fred...@gmail.com> wrote:

    Main advantage is a major reduction in physical size and carbon footprint of components. Efficiency is better too, but not radically so.

    DOE page with breakdown of technology:

    SUPERCRITICAL CO2 POWER CYCLES

    https://netl.doe.gov/node/7548

    Mass science media overview quick read:

    A Tiny Supercritical Carbon Dioxide Turbine Can Power 10,000 Homes

    https://cleantechnica.com/2023/10/30/a-tiny-supercritical-carbon-dioxide-turbine-can-power-10000-homes/
    There's no shortage of working fluids for driving turbines. For a
    while, mercury vapor was the next big thing.

    Why does the article include a political rant?

    More background on sCO2:

    https://en.wikipedia.org/wiki/Supercritical_fluid

    You can see CO2 is one of the easier gases to work with from Table 1.

    Interesting application to refrigeration generally, heat pumps specifically:

    https://en.wikipedia.org/wiki/EcoCute
    10 Mpa is about 1500 PSI. Freon systems run around 200.

    It's 7.38 MPa which is a little over 1000 psi. Standard test pressures for conventional a/c refrigerant systems is 500 psi, so sCO2 is in the neighborhood. I don't like the sound of calling this a 'solvent'.

    Looks like the oil dissolved in the sCO2 ends up interfering with heat transfer, and that obviously should be minimized.

    https://www.sciencedirect.com/science/article/abs/pii/S0140700712000734

    --- SoupGate-Win32 v1.05
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  • From a a@21:1/5 to Fred Bloggs on Wed Nov 1 02:35:23 2023
    XPost: free.spam

    The arsehole Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> persisting in being an Off-topic troll...

    --
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  • From a a@21:1/5 to Fred Bloggs on Wed Nov 1 02:35:30 2023
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    The arsehole Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> persisting in being an Off-topic troll...

    --
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