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Comment: Re:100% of Cable company's throttle bandwidth, esp (Score 2) 181

That 20Mb/4Mb, most cable internet users are advertised was throttled to less than 300Kbps/101Kbps in every city I have ever lived in. Thanks to my dd-WRT router I know this to be absolutely 100% true. You can learn it to, but not from a lying Speedtest!

I can confirm Speedtest's results independently by uploading/downloading content to an Amazon EC2 instance. I am, in fact, getting what both the cable company and have told me I'm getting, which is good, because I refuse to do business with Verizon.

Comment: Re:Only when Tesla .. (Score 1) 329

by Phreakiture (#49569021) Attached to: Why Our Antiquated Power Grid Needs Battery Storage

It's been available in the US as well. The annoying part is that omitting it is part of what brought down the price of solar arrays.

Around ten to twelve years ago, if you wanted a solar array, a battery bank was part of the picture. You would get ahold of a Xantrex or an Outback (I think there may have also been others, but these are the ones I recall) grid-tie inverter and a matching charge controller. It would use generated power first to charge your batteries, and then sell to the grid when the batteries are full. Running from grid-first or batteries-first was something you could configure depending on the capabilities of your equipment.

Then along came the "batteryless" inverters, and that's what almost everyone is using now. They are designed to treat the grid like a battery, and that works until you hit a certain level of saturation, which is what is now keeping electrical engineers up at night -- we may be approaching that level.

Comment: Re:Not *battery* storage (Score 1) 329

by Phreakiture (#49568975) Attached to: Why Our Antiquated Power Grid Needs Battery Storage

Tempers have flared pointlessly here, so let me do my best to provide a simple, hopefully helpful answer.

The hot end of a Peltier device is heated by the heat that gets pumped (by the device) from the cold end. When you apply power to the device, it heats the hot end by moving heat from the cold end, which is how the cold end gets cold.

So you don't want to heat the hot end; you want to cool it, presumably using a heatsink and maybe a fan.

For bonus points, we can take a lesson from the mechanical aircons and do this: The cold end is going to have water condense on it. You need to dispose of that water, of course, but what you can do with some of it is use it to wet down the heatsinks on the hot side so that evaporative cooling is added to the mix. On a typical window aircon, the equivalent takes place in that the condensate is collected in a reservoir (the excess is what drips out of the bottom of the machine) and the outside fan will usually have a ring on it that splashes this water up onto the condenser coil (which is the hot end and heatsink of a mechanical aircon).

In the end, I don't know if your Peltier aircon would be more efficient or not, compared to a mechanical one, but it could be a worthwhile experiment. Just don't heat the hot end, because that's getting the ideas wrong.

Comment: Re:Title (Score 1) 161

Yes, okay, I can see the point about noun vs. verb. I'm not sure that non-title capitalization would have helped, but now that you mention it, it is kind of a silly tradition.

I suppose this could have been cleared up by adding the word 'that', e.g. "Bolivia Demands that Assange Apologize". It's an assumed word in this particular context. Another option might have been "Bolivia Demands Apology from Assange" or some such. Really, though, this is semantics more than grammar.

Testing can show the presense of bugs, but not their absence. -- Dijkstra