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It is not about wheel. Engineers operate with facts. World should be Zero Carbon yesterday to keep global temperature rise below 1.5°C [1]. > The Russian Fede

It is not about wheel. Engineers operate with facts. World should be Zero Carbon yesterday to keep global temperature rise below 1.5°C [1]. > The Russian Federation supplies a significant volume of fossil fuels and is the largest exporter of oil, natural gas and hard coal to the European Union. > Part of the aim of the Energy Union is to diversify the EU’s gas supplies away from Russia, which has already proved to be an unreliable partner, first in 2006 and then in 2009, and which threatened to become one again at the outbreak of the conflict in Ukraine in 2013–2014 [2]. Natural gas is both climate and political issue. How much is 40 GW in bcm (Billion cubic metres of natural gas [3])? 40 GW year / 40 petajoules 31.54 [4] bcm That and wind may help with 50 bcm / month winter time [5]. I am all for nuclear energy but it costs way more [6]. [1] https://ourworldindata.org/grapher/co2-mitigation-15c https://ourworldindata.org/grapher/co2-mitigation-15c [2] https://en.wikipedia.org/wiki/Russia_in_the_European_energy_sector https://en.wikipedia.org/wiki/Russia_in_the_European_energy_... [3] https://en.wikipedia.org/wiki/Billion_cubic_metres_of_natural_gas https://en.wikipedia.org/wiki/Billion_cubic_metres_of_natura... [4] https://www.wolframalpha.com/input/?i=40+GW+year+%2F+40+petajoules https://www.wolframalpha.com/input/?i=40+GW+year+%2F+40+peta... [5] https://www.oxfordenergy.org/wpcms/wp-content/uploads/2020/06/Natural-gas-demand-in-Europe-the-impacts-of-COVID-19-and-other-influences-in-2020.pdf https://www.oxfordenergy.org/wpcms/wp-content/uploads/2020/0... [6] https://en.wikipedia.org/wiki/Cost_of_electricity_by_source https://en.wikipedia.org/wiki/Cost_of_electricity_by_source

wazoox 6y ago
I don't think that Russia is an unreliable partner, on the contrary in fact. Anyway I'm not arguing for natural gas at all, but for syngas, which should be carbon neutral. I never said "we shouldn't diversify", however I think we should diversify towards things that work. H2 is hyped at the moment but can only be at best a very small part of the solution. Synthetic zero-carbon methane is almost certainly more interesting because the infrastructure is already there, most things working on oil can be converted to methane, etc.
- sergeykish 6y ago
  It would be great to utilize existing infrastructure. I think everyone understands that. That requires H2 and Direct air capture and Sabatier process. May work [1], I am not sure about heat recovery part, isn't heat lost in Sabatier reaction? > Heat from sabatier reaction: 7.2 - 5.6 = 1.6 kWh > Heat from electrolysis = 1.98 kWh > Total heat = 3.58 kWh > If we can recover 70% of the heat is would cover DAC heat requirement. Climeworks is interesting company — capturing CO2 at $600/tonne, now they produce natural gas [2]. [1] https://learn.openenergymonitor.org/sustainable-energy/energy/sabatier-process https://learn.openenergymonitor.org/sustainable-energy/energ... [2] https://www.youtube.com/watch?v=RMMj72fgz9E https://www.youtube.com/watch?v=RMMj72fgz9E

wazoox 6y ago

I don't think that Russia is an unreliable partner, on the contrary in fact. Anyway I'm not arguing for natural gas at all, but for syngas, which should be carbon neutral. I never said "we shouldn't diversify", however I think we should diversify towards things that work. H2 is hyped at the moment but can only be at best a very small part of the solution. Synthetic zero-carbon methane is almost certainly more interesting because the infrastructure is already there, most things working on oil can be converted to methane, etc.

sergeykish 6y ago
It would be great to utilize existing infrastructure. I think everyone understands that. That requires H2 and Direct air capture and Sabatier process. May work [1], I am not sure about heat recovery part, isn't heat lost in Sabatier reaction? > Heat from sabatier reaction: 7.2 - 5.6 = 1.6 kWh > Heat from electrolysis = 1.98 kWh > Total heat = 3.58 kWh > If we can recover 70% of the heat is would cover DAC heat requirement. Climeworks is interesting company — capturing CO2 at $600/tonne, now they produce natural gas [2]. [1] https://learn.openenergymonitor.org/sustainable-energy/energy/sabatier-process https://learn.openenergymonitor.org/sustainable-energy/energ... [2] https://www.youtube.com/watch?v=RMMj72fgz9E https://www.youtube.com/watch?v=RMMj72fgz9E