Posts by icanbob@techhub.social
(DIR) Post #Al1N1D46S7DJSuptdA by icanbob@techhub.social
2024-08-16T10:04:06Z
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@publius @collectifission What is you “vision” for a climate optimized energy system?
(DIR) Post #Al1N4kKJFBIrUb6QnQ by icanbob@techhub.social
2024-08-16T10:04:45Z
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@publius @collectifission What is your “vision” for a climate optimized energy system?
(DIR) Post #Al2ewhJAZhtg9CqDia by icanbob@techhub.social
2024-08-17T00:59:42Z
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@publius @collectifission Not disagreeing with this. Question remains; how can we achieve this extra energy in a climate neutral manner?
(DIR) Post #Al4QPj9lfhzpHWkRBw by icanbob@techhub.social
2024-08-17T21:26:15Z
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@collectifission @publius I agree with the idea that we need to move toward the highest density energy source which is nuclear. However I’m not convinced that we can get there fast enough (from a climate perspective) with existing nuclear technology. Hence I believe we need to climate optimize the deployment of all our energy technologies. At the moment we optimize on price/profits which won’t get us there./1
(DIR) Post #Al4QPkLrEFGEzJPbfs by icanbob@techhub.social
2024-08-17T21:26:15Z
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@collectifission @publius Deployment of renewables in Ontario are not optimized for climate goals. We have a very large CANDU nuclear fleet followed by a close second in gas. Currently we dump all our renewables onto the grid allowing gas to follow that. My calculations show that a better climate optimization would be to match renewable production in real time with solid oxide electrolysers with the H2 deployed to heavy transport./2
(DIR) Post #Al4QPlaQdYVionEl1c by icanbob@techhub.social
2024-08-17T21:26:16Z
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@collectifission @publius Meanwhile in Canada we have a molten salt reactor startup called Terrestrial Energy. There is great potential with this technology to reduce the cost per MWh and waste per MWh. We also have a startup in western Canada called ProtonH2 which has interesting tech to allow climate neutral exploitation of old oil fields./3
(DIR) Post #Al4SLO9c156ytSjZSq by icanbob@techhub.social
2024-08-17T21:47:51Z
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@collectifission @publius I don’t see any way to get to zero carbon with heavy transport, shipping or aircraft other than with H2. If I’ve learned anything in this journey so far it is that the only truely trustworthy result is from a real world experiment. I haven’t seen the data from those on adding H2 to existing pipelines. H2 embrittlement is a known but ultimately solvable problem.
(DIR) Post #Al4l0XBJ9ju3wIIS24 by icanbob@techhub.social
2024-08-18T01:17:04Z
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@publius @collectifission Ontario did just that transition with our CANDU replacing all our coal power. However our grid is still not carbon free because it is exceedingly difficult to have CANDUs replace our gas generation. Some still believe that we can replace our gas with renewables but the data clearly says otherwise. Best renewables have been able to do in Ontario is lower the carbon intensity vs straight gas.
(DIR) Post #Al5VoUwQM2V9MX66Ge by icanbob@techhub.social
2024-08-18T10:01:31Z
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@publius @collectifission Back in 80s when Ontario was finishing CANDU buildout to baseload there where lots of discussions about extending beyond baseload and valley filling. At some point Ontario decided gas was the “better” way. I know FLIBE is now talking about using CO2 as working fluid in closed cycle gas turbine instead of steam.
(DIR) Post #AsklfOgFVvwiH9gWDw by icanbob@techhub.social
2025-04-04T16:46:57Z
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@stux You forgot to divide by Pi.
(DIR) Post #AsuVgWGrOjEsr1zkkS by icanbob@techhub.social
2025-04-09T09:35:00Z
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@publius @collectifission Also Ontario. For the same reason.
(DIR) Post #AtM5BUcIvPMititoTA by icanbob@techhub.social
2025-04-21T21:02:11Z
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@publius @collectifission @BlakeHamiltonCA My analysis of the renewable datasets has led me to the conclusion that we are misapplying our renewable resources trying to green a JIT grid. From a climate perspective there are much better uses for those renewables.#renewableshttps://energyasicit.ca/EnergyVision/
(DIR) Post #AtMoyJbDAllqr12hA8 by icanbob@techhub.social
2025-04-23T01:22:57Z
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@GuillaumeRossolini @publius @collectifission @BlakeHamiltonCA H2 and electricity are both energy currencies. They deliver an energy service from an energy source. Just because we can convert btw these currencies doesn’t mean it always makes sense to do so.https://energyasicit.ca/Currencies/
(DIR) Post #AtT4Eon1dgawU4egdc by icanbob@techhub.social
2025-04-25T10:08:40Z
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@publius @GuillaumeRossolini @BlakeHamiltonCA @collectifission The world already produces and handles a lot of H2. “Global production of hydrogen is around 110MTpa in 2023, of which c30% is for ammonia, 25% is for refining, c20% for methanol and c25% for other metals and materials.”https://thundersaidenergy.com/downloads/global-hydrogen-supply-demand-by-region-by-use-over-time/
(DIR) Post #AtT4ErP1vMBQaWS49Y by icanbob@techhub.social
2025-04-25T14:44:49Z
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@BlakeHamiltonCA @publius @GuillaumeRossolini @collectifission @lemonde The most common H2 production method; SMR uses the carbon in methane to split water. CH4 + 2H20 => CO2 + 4H250% of the H2 comes from the steam. 2nd most common ;coal gasification uses carbon in coal to split water.C + 2H2O => CO2 + 2H2100% of H2 comes from steam.In both cases CO2 is concentrated and not diluted with N2.
(DIR) Post #AtT4EscBPwIaLbc5IG by icanbob@techhub.social
2025-04-25T14:55:07Z
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@BlakeHamiltonCA @lemonde @GuillaumeRossolini @publius @collectifission Contrast this with how methane is combusted in nat gas turbine to produce electricityCH4 + 2(20%O2; 80%N2) => CO2 + 2H2O + 2(80%N2)Much more difficult to capture this flue gas CO2 because of the N2 from combustion air.The only reason we don’t currently capture concentrated CO2 from H2 manufacturing is that CO2 is not priced sufficiently.
(DIR) Post #AtTngQ8zlvQc2brZVA by icanbob@techhub.social
2025-04-26T10:11:31Z
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@publius @GuillaumeRossolini @BlakeHamiltonCA @collectifission IMO the H2=fossil industry=bad is not the helpful debate. How to provide energy in a climate sensible way is. For example is this bad=fossil industry? Or a win for climate?https://protonh2.comOr is e-LOHC bad=fossil industry? Or a great idea for energy storage and transport and a win for climate?https://ayrtonenergy.comBoth are headquartered in Calgary.
(DIR) Post #Au2yR8nC0b7eBGyWwq by icanbob@techhub.social
2025-05-13T09:26:57Z
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@GuillaumeRossolini @publius @collectifission @lemonde @BlakeHamiltonCA Or you could do gasification in situ and only extract the H2.https://protonh2.comhttps://en.m.wikipedia.org/wiki/Underground_coal_gasification
(DIR) Post #AvNxEwgjDDLdsvcM7M by icanbob@techhub.social
2025-06-22T10:09:21Z
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Moltex reveals some interesting test results on recycling used CANDU fuel. If these result prove out it is a breakthrough IMO.https://www.moltexenergy.com/moltex-energy-unveils-breakthrough-in-nuclear-waste-recycling-at-canadian-nuclear-society-conference/
(DIR) Post #AyOuKJb8EJQaOGKb0C by icanbob@techhub.social
2025-09-20T14:52:50Z
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@futurebird How to monetize journalism is such a fundamental problem to ponder. What we do know is that the advertiser pays model is broken and subject to manipulation.