Category Archives: Energy

People’s Gas Breach not Infinite

According to the latest reports from the Chicago-area, a contractor who breached an energy company was unable to steal infinity.

It’s still bad news for the “finite” number of records he did access.

Peoples Gas and sister utility North Shore Gas have notified an undisclosed number of customers of the possible theft and potential use of personal information about them by a contract worker.

[…]

They said, though, that the number is “finite and very small.” The companies said they had no information to indicate that the number of customers affected by the possible identity theft would grow.

The contracted employee has been fired and is “subject to criminal investigation and prosecution,” the companies said.

Never mind the X-men. A cartoon comes to mind with an evil character who has the amazing ability to steal an infinite amount of data. Oh no! It’s…it’s…SAN Man! Egress man?

50km wireless link for Farallon Islands

I thought I wrote about this before but it doesn’t seem to show up anywhere. Tim Pozar gave an excellent presentation on how he and Matt Peterson built a wireless link from San Francisco to the Farallon Islands.

WMV and PDF available from NANOG49

The presentation will cover the requirements for a very limited budget and power consumption, issues of remote deployments, long distance microwave links over the ocean, sensitivity to the largest breeding colony the contiguous United States.

Additional network topics will be the requirement to support various services on the island via VLANs, fiber deployment to overcome distance and lightning, RF path calculations, “tuning” of the radio modulations schemes to provide the best up-time and remote support of a location that may only be accessible once a month.


Sailing around the Farallon Islands: Photo by me

Funnel Triples Wind Turbine Output

Wind LensIt has a fancy name and design but as you can tell from the photo it is a simple innovation based on a reverse funnel effect. Cleantechnica reports:

The Wind Lens works by creating an area of low pressure behind the turbine that essentially sucks the wind through the turbine, increasing effective wind speed. As wind power is proportional to the wind speed cubed, the wind lens changes the fluid dynamics around the turbine to increase its power.

Can we expect to see datacenters designed around tubines in the near future? Both new power and cooling solutions may be found by engineers trying to harness the wind. I envision a tunnel that flows through a datacenter to power turbines yet also pull heat out and away.

I’ve already written about the overproduction of power from wind turbines in Germany that has forced them to export energy to their neighbors.

Now the Japanese appear ready to take the issue even further by dropping the cost of wind energy below nuclear energy and forcing a giant shift in risk calculations.

Imagine: no more dirty coal power, no more mining deaths, no more nuclear disasters, no more polluted aquifers as a result of fracking.

Fair enough but don’t forget to imagine instead some new risks such as climbing up giant turbines to service them, the impact to weather and wildlife

How penguins know when to land

New research indicates that penguins can count, or maybe subtract. Either way, they can measure energy spent in order to predict the time to stop flying.

When fishing in open water, the ten free-rangers studied, over the course of 15,978 dives stayed under for an average of 5.7 minutes. When fishing from a hole in the ice however, the three birds under study dived 495 times but stayed under much longer, which led the researchers to believe that the penguins’ decision to end their time under water wasn’t about how long they’d been under at all. This led them to consider the possibility that it was based on energy expended instead, which is how they came to start counting how many times the penguins flapped their wings to propel themselves while chasing after fish.

Turns out regardless of whether the penguins are fishing in open water, or through a hole in the ice, they flap on average 237 times before surfacing. Thus, it seems rather clear that they are basing their time spent under water on energy spent flapping, rather than on some predetermined time span; though, how they count and keep track, is still anyone’s guess.

Emperor penguins flying
Emperor penguins flying. Photo by Guillaume Dargaud