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Comment: Re:Aquaponics (Score 1) 592

by Black Gold Alchemist (#39518487) Attached to: Ask Slashdot: How To Feed Africa?
Another solution with wind alone might be to build a sort of water tower. You could pump water up to the top of the tower whenever the wind was active. Then all that water could fall down and during that process pump more water. In essence, you could use water as an energy storage medium, thereby eliminating all the batteries and biodiesel and stuff. You can also put the wind turbine on the water tower, saving construction costs. If you make the water tower taller than the height of the 1.5 meters you are actually pumping the water, you can use falling water to pump more water. A brief math explanation:
Let H_t be the height of the tower from the bottom of the farm.
Let H_f be the height of the top of the farm from the bottom of the farm. (1.5 m in your case)
g = earth's gravity.
Note 1 kg of water = 1 liter of water.
Now, for every kg of water in the tower, (H_t - H_f) * g joules of energy are released. Each kg pulled up from the bottom of the tower uses up H_f * g joules of energy. So thus, every kg down can lift up (H_t/H_f - 1) kgs of water. So, if the tower is 15 meters tall, then you only need 1 kg to get 9 kg up. In your case, for example, if the tower is 15 m tall and you want 3000 kg/hour, you only need 300 liters of water in the tower to run it for an hour assuming your mechanical pumping system is 100% efficient (obvious it won't be, but it probably will be pretty close). The falling water can also run the air pump, solving that problem while you're at it. You can still have the electric system as a back up. Note that it is often much more windy at night than during the day so you might want a 24 hour storage system. This might get big, but if you are already building a huge tower for the wind turbine, it might not be all that bad.
Australia

Australian Govt Censors Notes From Secret Anti-Piracy Talks 177

Posted by samzenpus
from the need-to-know-basis dept.
An anonymous reader writes "It looks as if the Australian Government really doesn't want the public to know what's going on in its closed-door talks with ISPs and the content industry. The Attorney-General's Department has applied the black marker to almost all of the information contained in documents about the meetings released under Freedom of Information laws. The reason? It wouldn't be in the 'public interest' to release the information. Strange how the public seems to have a high degree of interest in finding out what's being talked about."

Comment: Re:This looks like a failure waiting to happen (Score 1) 243

by CTalkobt (#38819333) Attached to: New EU Legal Privacy Framework: We're Not Kidding

The intent I fully and whole-heartily agree with... However, 2% of _world_wide_revenues_ is what concerns me. I'd rather see it phrased as 2% of world-wide revenue apportioned to user base / affected users (affected or not by breach).

Hence, the larger the breach, the larger the fine. I could easily see Company A arguing to US regulators : "We shouldn't have to pay for US users as the EU already fined us for everyone.".

Comment: Re:155mph isn't green using any fuel (Score 1) 105

by Black Gold Alchemist (#38168912) Attached to: 155 MPH Biofuel Truck Breaks Speed Record
The EROEI of biodiesel fuels is around 3-3.5. Straight vegetable oil, like this, is higher because there is no conversion process. Also, the Haber-Bosch process does not consume natural gas, it consumes hydrogen, and in the past was a totally renewable processing using hydroelectricity and electrolysis systems. Now the economics are different. Also, energy consumption doesn't matter in the end, only emissions.

Comment: Why spread the vile? (Score 5, Insightful) 699

by CTalkobt (#37626314) Attached to: Phelps Clan Tweets Intent To Picket Jobs Funeral Via iPhone
Why do people help these people spread their vile?

Posting stories on Slashdot / Putting it on CNN is only helping them get what they crave : Attention.

Some problems are best ignored - then they'll fade away out of frustration when they realize they're not getting the attention.

Blah blah - free press - I get it. I'm not asking for a law but common sense to take place.

People love dirty laundry - D. Henly.

Politics are almost as exciting as war, and quite as dangerous. In war, you can only be killed once. -- Winston Churchill

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