Sylvain Miermont @miermont@qoto.org
- Topics of interest
- electronics, open hardware, communications, energy, climate, mobility
- Location
- Grenoble, France
- Other account
- @miermont [mostly fr]
Extremely online electronics engineer, PhD in #microelectronics (low-power digital systems architecture), #LoRa pioneer.
Co-founded a #hackerspace, co-founded an industrial #company, interested in #manufacturing (traditional and distributed), frugal innovation, durable and resilient sociotechnical systems.
Joined Oct 2022
Mastodon, will probably be a tad slow for the coming days. Please post reasonably, and give everyone some time to settle.
Maybe you can repost, summarize, or reflect on the best posts you've seen on Twitter and other sites. Doing a compilation of some of the greatest stuff we've seen elsewhere is a good way to set the tone. 
Sylvain Miermont
boosted
German #newspaper “Berliner Morgenpost” made a playful #visualisation about the personal #climate budget - it shows vividly where individuals quickly reach their limits and why politics urgently needs to act. There even is an interactive version: https://interaktiv.morgenpost.de/co2-budget-pro-kopf-testen-klimawandel/ #infographics #climatechange
Sylvain Miermont
boosted
Car vs bike - what are the costs?
Diagram is from my book 'From A to B'. It's a nice book if you're interested in cycling as a form of transport.
Available on my website for reuse by members of my Diagram Club https://davewalker.com/diagram-club/
#Japan imports a lot of liquefied #methane (CH4), also called LNG.
Since 2013, this country hosts the single largest #LNG storage tank in the World: 60 meters high, with a useful diameter of 70 meters, it stores 250'000 cubic meter of cryogenic liquid, for a mass of 105 metric kilotons of CH4.
If that #CH4 was vented, that would be the equivalent of 8.5 megatons of #CO2 equivalent in GWP20 (1.5 times the #Nordstream leak).
https://www.youtube.com/watch?v=wDOqUFaPXsY
Because the storage capacity scales to the cube of dimensions, but thermal loss scales with the square of dimensions, physics favors such huge tanks. And because the soil is cooler than ambient air most of the year, there is also a benefit to having those tanks underground.
In total, Japan has a LNG storage capacity of 73 times this single tank.
- Topics of interest
- electronics, open hardware, communications, energy, climate, mobility
- Location
- Grenoble, France
- Other account
- @miermont [mostly fr]
Extremely online electronics engineer, PhD in #microelectronics (low-power digital systems architecture), #LoRa pioneer.
Co-founded a #hackerspace, co-founded an industrial #company, interested in #manufacturing (traditional and distributed), frugal innovation, durable and resilient sociotechnical systems.
Joined Oct 2022
