That looks complicated and frankly kind of stupid. Imagine trying to get something like that working without having an engineer standing by that can get everything fixed once it crashes down or something else like that happens.
Comment on 'Windmill': China tests world’s first megawatt-level airship to capture high winds
zergtoshi@lemmy.world 1 week ago
It’s a novel approach, but the Chinese aren’t the only ones trying to harvest energy from high winds: skysails-power.com/how-power-kites-work/
titanicx@lemmy.zip 1 week ago
Warl0k3@lemmy.world 1 week ago
IDK, the benefit to the goofy kite design is that the aerial portion is far simpler - and there’s no massive energized cable hanging in the air. It’s a little… non-conventional, but it’s a great less complicated than floating a massive generator like the chinese solution. Downside is presumably lower energy density per unit, but the reduction in operational footprint might make the two designs competitive. It’s good people are exploring both options!
zergtoshi@lemmy.world 1 week ago
The simpler design might lead to lower prices per kWh, which will in the end play a role together with reliability, e.g min/avg power output, durability, outages.
I find it impressive how creative engineers get. Let’s hope for a third option ;)
zergtoshi@lemmy.world 1 week ago
Fair, but please name one single way to generate that kind of electrical power that can be fixed by a layperson in case something crashes.
titanicx@lemmy.zip 1 week ago
At least the Chinese version doesn’t rely on as many moving parts to keep it aloft. And a complicated mechanical system to produce a flight path. The blimp itself is complicated, but it’s not a kite.
zergtoshi@lemmy.world 1 week ago
In the end the TCO (per kWh) will play a major role, especially for big installations and for smaller ones the price floor.
I suppose a helium filled blimp with 12 turbines will be more pricey than a kite with a generator. If the kite fills your need, pick that.
humanspiral@lemmy.ca 1 week ago
Promising concept too, but this is 250-500x the scale of that.
zergtoshi@lemmy.world 1 week ago
How so, when skysails talks about “Venyo harnesses the power of high-altitude winds with speeds of 13 m/s and a continuous output of up to 200 kW.” while the S1500 is featured with “Inside this duct are 12 turbine-generator sets, each rated at 100 kW.”?
It’s more like factor 5-6.
humanspiral@lemmy.ca 1 week ago
Their v2 product produces about 5kw at much lower altitude (weaker 9m/s winds). 13m/s is a big ask. They don’t go as high as 1000m. I was comparing to their v2 product instead of the 200w theoretical max of their v1 product. But the blimp may not produce 1.2mw all the time either.
zergtoshi@lemmy.world 1 week ago
Yah, we need to have them running to get real numbers.
I find both approaches promising.
Ways to make electric energy available without burning fossil fuel are good.
AlteredEgo@lemmy.ml 1 week ago
What matters is scalability and how much material and cost you need to produce per energy unit. Kites (either parasails or fixed wing) are much simpler, can be scaled up too, and you only need a simple cable that pulls the generator’s winch. Overall kites seem much more efficient to scale up.