GissaMittJobb

joined 1 year ago
[–] GissaMittJobb@lemmy.ml 2 points 2 days ago (1 children)

The case for an H2 economy is one entirely based on Green H2 made from surplus renewables which are needed most days to have enough renewable energy every day.

Wouldn't it be more compelling to store it in other types of batteries instead of H2 primarily?

That gas companies know how to build pipelines, distribution, and make metered gas sales to customers is a path for them/employees to remain useful without destroying the planet.

I honestly don't think H2 is a good idea for these use-cases. H2 distribution is a different beast than natural gas distribution, on top of gas combustion just generally not being particularly good compared to common household electrical counterparts (induction for stoves, electric for ovens, heat pumps for heating buildings and water).

Commercial vehicles has legitimate benefits of lower cost from H2 FCs than batteries. Quicker refuel times. Aviation especially benefits from redesigning planes for H2 for the weight savings. Trains/ships need the power/range. Trucks/cars can use the range extension, and could use H2 as removable auxiliary power for extended range.

I imagine refueling times is not necessarily going to be critical for all types of commercial use-cases.

Aviation struggles with the relatively low energy density in H2.

Trains should essentially always be running on catenaries.

Boats might be able to make use of H2, I'm not super familiar with the issues affecting them.

Long-hail trucking should broadly be replaced by the much more efficient rail shipping.

Cars run pretty much fine on electric as is, I'm not sure the case for making H2 cars is compelling enough to be warranted.

Ammonia and fertilizer is traditional use for H2.

This might be a good niche for H2 to fill.

All in all, I'm still not convinced that large-scale H2 buildouts is a good use of our resources, but there are definitely a few compelling niches that it can fill. We need to be wary of them being co-opted by blue hydrogen fossil fuel companies though, which often seems to be the case today.

[–] GissaMittJobb@lemmy.ml 1 points 2 days ago (3 children)

I have a generally negative impression of hydrogen because many of the intended use-cases seem to be a cover story for the gas industry to keep existing, which it very much should not be any more.

Do you know any use-cases where hydrogen is truly warranted, outside for example steel production, which I think might be legit?

[–] GissaMittJobb@lemmy.ml 22 points 3 days ago* (last edited 3 days ago) (5 children)

Also when you account for those batteries the cost is going to shift a bit.

You better be bringing units if you're going to be claiming this.

Still less than half of the LCOE of nuclear when storage is added: https://www.statista.com/statistics/1475611/global-levelized-cost-of-energy-components-by-technology/

Given that both solar and storage costs are trending downwards while nuclear is not, this basically kills any argument for nuclear in the future. It's not viable on its face - renewables + storage is the definitive future.

[–] GissaMittJobb@lemmy.ml 6 points 5 days ago (3 children)

The Twilight Zone - Nightmare at 20,000 feet, I believe

[–] GissaMittJobb@lemmy.ml 12 points 6 days ago (1 children)

As a counterpoint, I've bought loads of really good cycling accessories from AliExpress. It's not impossible to buy high-quality things from China - this is after all where a large part of everything is manufactured these days - you just have to be careful not to fall for the offers that are just obviously too good to be true.

[–] GissaMittJobb@lemmy.ml 8 points 6 days ago

Uncapped overtime excuses bad management. I get why they're pissed, this puts a spotlight on how bad they are at management.

[–] GissaMittJobb@lemmy.ml 10 points 6 days ago

ITT: People who did not read the article and just shot from the hip

[–] GissaMittJobb@lemmy.ml 16 points 2 weeks ago

Assuming non-wasteful delivery methods, I'd still call that a win as vaping is generally less harmful to the health of the user.

Quitting is of course preferable, but I support harm reduction policies in general

[–] GissaMittJobb@lemmy.ml 2 points 1 month ago

The whole accepting deaths from car collisions is also a bit fucked up tbh

[–] GissaMittJobb@lemmy.ml 40 points 2 months ago (3 children)

It baffles me that people actually take these assertions seriously, especially after having used different software that uses voice input, like Siri, Google Assistant, Alexa or whatever. Those things make some serious mistakes even under ideal circumstances, and you want me to believe that they can accurately overhear things in non-ideal circumstances? I highly doubt it.

Regardless, you can use an ad blocker to make this a moot point - I've never experienced anything even close to this, because I never get ads.

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