scblock

41 ms·

541.
by scblock 10y ago
For horizontal axis turbines two speed generators were historically a thing, usually with two sets of windings which were engaged at different speeds. This works, but is less efficient and mechanically more taxing on the machine than variab
542.
by scblock 10y ago
There are a number of companies and people working on potentially innovative ideas, but it's not an easy thing. Serrated trailing edges and vortex generators are easy enough to test (reduced noise from one, increase energy from the oth
543.
by scblock 10y ago
This is only partially related to my other long post here, but it should be mentioned. This article appears to be largely about potential to disrupt the wind industry with outside the box thinking. But in the more than a decade I have been
544.
by scblock 10y ago
http://apps2.eere.energy.gov/wind/windexchange/wind_maps.asp has this map plus state by state maps available for download as relatively high resolution PDFs.
545.
by scblock 10y ago
You're going to have to provide documentation of this.
546.
by scblock 10y ago
Lattice towers were common in the past, and are still the best weight/material to strength choice. Other considerations have led to the tubular steel tower dominating, though a new generation of enclosed lattice towers is being develop
547.
by scblock 10y ago
There is a lot of bad information here, and it appears there are others in these who are also better informed than the author. Let me just hit up a couple of points that are fundamentally wrong, though. - "Conventional wisdom says wind
548.
by scblock 10y ago
No transparency here. How disappointing.
549.
by scblock 11y ago
This is already all over the place in magazines and newspapers, where ads are not "blockable".
550.
by scblock 11y ago
The sanctimoniousness in here is especially ironic given the general attitude of HN and YC about money and technology. It's hard to take you seriously.
551.
by scblock 11y ago
Great. But as an end user I "utterly" hate the Chrome/Firefox model of endless updates.
552.
by scblock 11y ago
The "agreement" is a joke. If you give them your money next week, you may or may not get a place in line that may or may not exist, to eventually maybe or maybe not buy a car. The date and time which you may or may not make a deci
553.
by scblock 11y ago
Specific to Clipper, the owner of the technology keeps enough money around to keep rebuilding the crazy gearboxes for current owners, while other spares can often be obtained directly from the actual component manufacturers. Third party ser
554.
by scblock 11y ago
How is this relevant?
555.
by scblock 11y ago
"Software development is hard. Adobe's software is incredibly complex. Sure this sucks, but it's worth keeping that in mind before blasting Adobe." That's a joke, right? Software development is hard, but this kind o
556.
by scblock 11y ago
No. Grow up.
557.
by scblock 11y ago
The trouble is retailers. I'd use it everywhere if people would support contactless payments. It's how I pay at Sprouts every time. Heck, Kroger has new terminals that should support contactless payments AND chip based payments, b
558.
by scblock 11y ago
Yep. I live in Denver and clicked that and was pretty much told that the Rockies are indeed the shape I think. Interesting article but the headline is bad.
559.
by scblock 11y ago
What is the point of this site other budget shaming?
560.
by scblock 11y ago
Truth. To clarify, I was specifically referring to wind turbines that generate electricity.
561.
by scblock 11y ago
Let me do a quick word substitution. > If you've never driven past trees in the morning or evening, the flashing is incredibly irritating. Shadow flicker is a siting and operations problem. It's based on geometry (sun angle
562.
by scblock 11y ago
Again? AGAIN? Another "no blades! save the birds!" technology that's little more than a concept. There are constantly amazing technologies just around the corner that will definitely totally be awesomely better than existin
563.
by scblock 12y ago
Claiming you can't have a perfect circle because pi is irrational makes no sense. The physical world isn't built on the decimal system. Similarly, the golden ratio being an irrational number has no bearing on the article's cl
564.
by scblock 12y ago
And by "one of the few" you mean "one of the many". Heart rate monitoring is not terribly difficult or magical.
565.
by scblock 12y ago
Unless you compare it to a Garmin Vivosmart, which does notifications and lasts about 7 days. No GPS, but fully waterproof. Or if you compare it to the just-announced but not yet available Fitbit Surge, which claims 5 days without GPS. Two
566.
by scblock 12y ago
When you're on an active weight loss plan these devices can help a lot. You don't even need it to be perfectly accurate in its calorie estimates as long as it is consistent. The benefits over regular check-ins with a doctor are co
567.
by scblock 13y ago
Actually no. Perpetuating the "boys only" impression many programmers seem to want to cultivate is bad. The name is exclusionary, and a poor joke.
568.
by scblock 13y ago
It's being done, actually. Company called Ogin (was FloDesign Wind Turbine) is developing a 100 kW shrouded wind turbine that is similar to that idea. But it only works on small machines, can you imagine a 100 meter rotor with a shroud
569.
by scblock 14y ago
Oh for Christ's sake, this is what passes for the "top story" on Hacker News these days?
570.
by scblock 15y ago
That question is literally a massive research project and I couldn't begin to answer it here. The best place to start is probably the DOE 20 percent by 2030 report released in 2008. http://www.20percentwind.org/20p.aspx?page=Report The US

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