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I ran into a plumber just now, who, when the subject of environmental sustainability came up, explained that his pet peeve is our society’s lack of concern about the use of potable water for applications in which “gray water” would do just fine.  Examples include flushing toilets and lawn irrigation.

Gray Water

Renewable Energy

Illegal Aliens and U.S. Veterans

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Two comments:

That the United States has homeless veterans is a national (and international) disgrace.

By definition, no one has the legal right to enter the U.S. illegally, but according to our constitution, everyone in America is entitled to due process.

Illegal Aliens and U.S. Veterans

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Renewable Energy

Cancelling Renewable Energy

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This will result in lung disease, climate change, loss of biodiversity, and higher electricity prices.

It will also further alienate the rest of the world from our country, as every other nation on the planet is making gains in the direction of decarbonization, and no other nation suffers from this level of corruption with the fossil fuel industry.

If that pleases you, you’re a warped human being.

Cancelling Renewable Energy

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Renewable Energy

Rooftop Wind

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My doctor, who knows that I understand physics and renewable energy in particular, asked me today what I thought about wind turbines on boats.

I explained that, since boats need their own ways to generate electricity, what is called “small wind” may make sense. Most ships have diesel-powered generators, and that’s an option for smaller craft as well, and solar is not an attractive option because of the small area.

Doctors generally don’t have time to kill, but he asked me further about small wind, to which I explained:

Because the area of a circle is proportional to the square of the radius, big is better.  If you can build a turbine with a radius 100 times larger than a small one, you’re going to generate 10,000 time more power.

Because the power generated by a turbine is proportional to the cube of the wind’s velocity, if you can site a turbine in wind conditions that are 10 times those on your rooftop, with trees and other buildings slowing the wind down, you’re going to generate 1000 times more power.

So, as usual, the answer resides in physics and math. 1000 times 10,000 is 10 million, which is why we see huge turbines on structures that lift huge turbines high above the ground, and it’s why the small wind industry has essentially disappeared.

If you don’t understand elementary school math and high school science, and you have money to burn, the investment offered at left may be right for you.

Rooftop Wind

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