Renewable Energy

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028 - Renewable Energy

In this video Paul Andersen discusses the technology, advantages and disadvantages of six sources of renewable energy; biomass, hydroelectric, solar, geothermal wind, and hydrogen. He also explains how changes in the storage and flow of energy in our power grid must be improved. He also lists the energy returned over energy invested ration for the various forms of energy.

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Music Attribution

Intro
Artist: CosmicD
Creative Commons Atribution License

Outro
Title: String Theory
Artist: Herman Jolly

All of the images are licensed under creative commons and public domain licensing:

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Комментарии

You win best teaching graphics of the year. The whole thing was pretty engaging, kudos

erricomalatesta

Binge watching all your videos for tomorrow's AP Environmental Science Exam at 8 AM, so excited :( Hope the exam goes well, also great work on these videos Mr. Anderson.

swantown

my daughter is doing a report on renewable energy tonight. she's using this video. :)

mistyowen

Your Outro Sounds like the ending of Mr.Bightside by The Killers

SemorreButte

if the ratio stays the same consumption wise, what about the energy/ equipment/ area, would that remain the same? like using soybean oil for desal, will production costs, land taken be the same as oil?

SunnyCook-vz

_"In 2013 research, Keith described how each wind turbine creates a “wind shadow” behind it where air has been slowed down by the turbine’s blades. Today’s commercial-scale wind farms carefully space turbines to reduce the impact of these wind shadows, but given the expectation that wind farms will continue to expand as demand for wind-derived electricity increases, interactions and associated climatic impacts cannot be avoided."_

_"What was missing from this previous research, however, were observations to support the modeling. Then, a few months ago, the U.S. Geological Survey released the locations of 57, 636 wind turbines around the U.S. Using this data set, in combination with several other U.S. government databases, Keith and postdoctoral fellow Lee Miller were able to quantify the power density of 411 wind farms and 1, 150 solar photovoltaic plants operating in the U.S. during 2016."_

_“For wind, we found that the average power density — meaning the rate of energy generation divided by the encompassing area of the wind plant — was up to 100 times lower than estimates by some leading energy experts, ” said Miller, who is the first author of both papers. “Most of these estimates failed to consider the turbine-atmosphere interaction. For an isolated wind turbine, interactions are not important at all, but once the wind farms are more than five to 10 kilometers deep, these interactions have a major impact on the power density.”_

_"The observation-based wind power densities are also much lower than important estimates from the U.S. Department of Energy and the Intergovernmental Panel on Climate Change."_

Comments ?

brucefrykman

Can you give me a ref. where you got the ratios or cost analysis? Great video! What software do you use?

SwappShop

Say EINSTEIN. Then use the three letters EIN when saying Turb-INE.

MaterialObserver

Thanks for sharing this information with us. Su usefull.

ebrulily

Well produced videos. But as a teacher in physics I dare not use them to educate my pupils, since the errors are to big and they will be misled. Start by fixing:

Error 1: Watts is not a measure of energy. TWh, kWh and J are common measures of energy though. What did you really mean with your numbers?

eriksundell

wouldn't burning of wood be carbon neutral, as the carbon is released just be from the carbon that the tree took in

termamonpiediepew

And of course the first problem of the equation is...PROFIT MOTIVE.

We need to change our fundamental way of recourse distribution and thinking.
-The world should be run by science, technology, and intrinsic motivation.
-The world should NOT be run by a labor system for profit/survival (especially in light of machine automation and cybernetics), Profit motive that leads to social inequality and a lot of crime, and a "democratic" government that is actually run by corporate interest as a result of fiat monetary corruption.

Monetary trade is a corrupt system that generates corrupt behavior, and this in turn is the source of almost all structural violence in the world. Plain and simple.

A return ratio of 1.3:1 is more than acceptable. Anything with a positive ratio is fine as long as it's renewable...The point is that it returns more than we put in. And over time, it will only get better. In todays world, we're looking at it from a monetary profit perspective, not an efficiency and symbiotic perspective.

Great video. Thank you :) I just had to rant.

Cara.