this post was submitted on 25 Oct 2024
4 points (64.3% liked)

Climate - truthful information about climate, related activism and politics.

5240 readers
614 users here now

Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

Recommended actions to cut greenhouse gas emissions in the near future:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.

founded 1 year ago
MODERATORS
silence7
4
Key to H2 economy: Toyota portable H2 cartridge (www.hydrogenfuelnews.com)
submitted 3 weeks ago by humanspiral@lemmy.ca to c/climate
11 comments fedilink hide all child comments
 

cross-posted from: https://lemmy.ca/post/31642688

for capacity: https://insideevs.com/news/738124/toyota-portable-hydrogen-cartridge-fcev/#:~:text=Gallery%3A%20Toyota%20Portable%20Hydrogen%20Cartridges&text=Toyota%20didn't%20say%20how,of%20161%20grams%20of%20hydrogen.

161grams = 5kwh+ of heat energy or close to 3kwh of electric only energy in a fuel cell.

For drones, ebikes, powerstations, this would be higher electric weight density than batteries. And solves ebike/powerstation charging on the go problem.

you are viewing a single comment's thread
view the rest of the comments
[–] federalreverse@feddit.org 3 points 3 weeks ago* (last edited 3 weeks ago) (8 children)

Now they just need to solve the energy consumption and cost parity questions surrounding green hydrogen.

And no, burdening taxpayers with financing nuclear reactors to produce "cheap" (read: subsidized) energy/pink hydrogen does not count.

I've recently heard about natural H2 reservoirs for the first time. If that turns out to have potential, I guess it might be the saving grace H2 in land transport applications. Although that's kind of like using fossil fuels except without the CO2 emissions.

And solves ebike/powerstation charging on the go problem.

You still need to either take an additional cartridge or find energy infrastructure.

Also, wouldn't you need an entire hybrid drivetrain in your ebike to make this work?

So, I guess portable H2 tanks don't solve any issues for cyclists/powerstation users or am I missing anything?

[–] ptz@dubvee.org 2 points 3 weeks ago (2 children)

Also, wouldn't you need an entire hybrid drivetrain in your ebike to make this work?

I'm assuming the ebikes they mean would use a fuel cell instead of (or augmenting) a battery. Just a guess, though.

[–] Addv4@lemmy.world 2 points 3 weeks ago

A kinda doubt it. A PEM fuel cell usually has a small amount of very expensive elements (like platinum) so I doubt they would be particularly feasible for something like an ebike.

load more comments (1 replies)
load more comments (6 replies)