New Concept for Zero Emission Natural Gas Power Generation

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Discussion Overview

The discussion centers around a new concept for zero-emission natural gas power generation as reported in a Science magazine article. Participants explore the feasibility, underlying technology, and implications of a start-up's approach to burning natural gas with pure oxygen and utilizing CO2 in turbines, while also addressing the economic competitiveness of the concept.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants express optimism about the new power plant concept, noting its potential economic competitiveness.
  • Others question the validity of the concept, highlighting the lack of a pilot project and suggesting that previous engineering efforts have not overlooked the use of CO2 as a working fluid.
  • One participant criticizes the concept as relying on unproven assumptions about carbon capture and sequestration (CCS), likening it to an incomplete invention that depends on external solutions.
  • Another participant defends the project, arguing that the research conducted has been sufficient to secure funding for a demonstration plant, suggesting that it could make CCS more affordable compared to traditional gas power stations.

Areas of Agreement / Disagreement

Participants express a mix of skepticism and support for the concept, with no consensus reached on its feasibility or the adequacy of the research backing it. Disagreement exists regarding the assumptions made about CCS and the overall viability of the project.

Contextual Notes

Some limitations noted include the absence of a pilot project and the reliance on assumptions about CCS, which remain unresolved in the discussion.

BillTre
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Science mag news article on a new electrical power plant being set-up by a start-up.
It burns natural gas with pure oxygen and runs turbines with CO2.
It makes water rather than using it and is in theory close to competitive economically. .

Sounds good to me, but I'm no engineer.
 
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You used the right word, concept. The article says nothing about them actually having done the R&D to build even a pilot project.

For decades, engineers have worked on Brayton cycles—thermodynamic loops that take advantage of the properties of supercritical fluids, which could be air or CO2.

You may want to ask yourself why the people promoting this are smarter than all those other engineers. It doesn't sound likely that none of the others looked at CO2 as the fluid.
 
BillTre said:
Science mag news article on a new electrical power plant being set-up by a start-up.
It burns natural gas with pure oxygen and runs turbines with CO2.
It makes water rather than using it and is in theory close to competitive economically. .

Sounds good to me, but I'm no engineer.
This is nonsense! The special sauce in this isn't that they don't produce CO2 but rather that they assume someone else will figure out how to sequester it for them! There is a cartoon somewhere on PF where an "inventor" figures out a fabulous invention and displays it on a blackboard, but leaves the key part blank, for someone else to figure out. It's exactly like that!

Very disappointing from Science.
 
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The above is very harsh in my opinion. For example they clearly have done enough research to prove it works or they would not have got funding to build a 25MW demonstration plant under construction.

I'd rather we didn't have to do CCS but this project does at least appear to make it a lot cheaper. I'd rather we did CCS than continue to build thousands of conventional gas power stations that just release the CO2.
 

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