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Green Illusions: The Dirty Secrets of Clean Energy and the Future of Environmentalism (Inglese) Copertina flessibile – 1 giu 2012

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Le recensioni clienti più utili su (beta) 4.2 su 5 stelle 67 recensioni
6 di 6 persone hanno trovato utile la seguente recensione
5.0 su 5 stelle A practical review of green power 26 aprile 2015
Di Tom Connor - Pubblicato su
Formato: Copertina flessibile Acquisto verificato
I live in MT where wind farms have popped up like weeds. The promises of cheap power have long since given way to higher energy costs. Wind projects in the 300MW range seemed like a great deal until the project managers negotiated with the state public service commission that local power companies - not wind farms - had to pay for the power lines that bring wind power to the grid, and local power companies HAD to include 20% of renewables in their power portfolio. Ironically, hydro is specifically excluded by state law as a renewable 'to encourage new development.' Things like this alienate the locals. After all that, the wind farms haven't lived up to their billing, producing a fraction of the claimed output. We got railroaded.

Ozzie Zehner's book Described perfectly what happened to us: Promoters bragged up the 'data tag' capacity of the project but forgot to tell us about 'capacity factor - CF.' Data tag ratings are for ideal conditions. CF is a running average of the actual output because nature's hand is on the throttle, not the hand of the grid manager. A 1000Mw coal plant usually has a CF 0f 95%. Due to poor siting (too windy, built near migratory bird routes or rest stops) some of the wind projects have a CF in the single digits. So the power company has to maintain 'spinning reserve' to pick up the load when wind can't.

Ozzie points out that replacing a 1000Mw coal plant with wind gets into some seriously strange numbers. Each tower must be spaced 3 blade diameters from it's neighbor. Blades are pushing 300ft, so we are talking 900 ft tower to tower. Build 1000 1Mw towers to produce 1000Mw to replace the coal plant. But wait, CF for a farm is in the single digits - so one needs 10x that many to replace the coal plant. Pretty soon we are looking at 30 square miles of wind towers to replace one coal plant on ten acres. And they will still need the coal plant as backup in spinning reserve. Increase the number even more if they ever get some sort of battery backup, because the batteries will need charging.

Solar projects suffer even more weaknessses because of dirt, heat, sun angle and reduced output with age. It means that the often repeated claim that we could power the whole USA with a small project in the desert is simply untrue.

That is just one example of ozzies's book. He addresses hydrogen, biofuels, nuclear, clean coal et al in a similar fashion.

Highly recommend.
6 di 6 persone hanno trovato utile la seguente recensione
5.0 su 5 stelle This is a life-changing book! 23 giugno 2014
Di Jocelyn Mercado - Pubblicato su
Formato: Copertina flessibile Acquisto verificato
I already had some mild opinions about environmentalism, drilling for oil, empty consumerism, the U.S. car culture, etc before reading this book. I bought this book because I was seeking an honest, open analysis of "what can the average person do help with the climate/environmental crisis?" This book has absolutely, 110%, answered my question.

Zehner has provided important information that all Americans (really, all people in industrialized countries) should be exposed to. You'll find out why solar cells, wind power, ethanol, and other "green" energy solutions are not as perfect as they are touted in the popular media. You'll probably be shocked to comprehend exactly how deeply ingrained we are in U.S. culture with the need to drive cars, buy as much as possible, and work overtime. Think about it - what do people really want? More vacation time? More time with the people we love, friends and family? More time outdoors in nature? And yet what do we do everyday? We go to work, go to the store, sit in traffic, eat prepackaged food, and watch TV. Do these activities make us happier? Healthier? More able to enjoy every moment? No. Absolutely not. The book includes realistic ways for real people to start small in reversing the unhealthy, damaging habits we have developed in our society over the past few hundred years, as well as larger, more sweeping suggestions for communities and the government to consider.

If you want to read a book that will make you question your current way of life, and start working toward living a better life right now, read this book. If you're paying any attention at all, it will spur you into action. Let's start taking better care of ourselves and our earth, today, right now. Thanks to the author for a candid and striking discussion of topics that have typically been swept under the rug in our American society. This is an excellent book that I will read and refer back to again and again.
3 di 3 persone hanno trovato utile la seguente recensione
5.0 su 5 stelle A worthwhile read 25 gennaio 2013
Di Teacher/Photographer - Pubblicato su
Formato: Copertina flessibile Acquisto verificato
I checked this book out of the library but feel it's such an important book, thatI ended up buying a copy on amazon to keep in my permanent book collection. My only regret is that I did not read it before building a "green" home in a rural area. Although some of the author's suggestions are not practical (people like myself who live in extremely rural areas with few people/neighbors cannot logistically be without a car, cannot expect public transportation, cannot have interdependent/cooperative relationships with neighbors if there are no neighbors, cannot have conveniences such as medical clinic, shopping etc. in one "village" (I have to go 30 miles one way to buy food and other supplies)etc. But he does expose the farce that is green energy today (for instance, our house is solar powered with a battery bank - but in 7 years when the batteries wear out, they will be an environmental landfill nightmare). OTOH, his suggestion to use more passive solar is right on - and it's free (just build lots of windows on your southern and western sides). Our house gets to about 65 degrees F even on terribly cold days due to passive solar. I highly recommend that you read this book if you are hoping to live a "greener" lifestyle.
3 di 3 persone hanno trovato utile la seguente recensione
4.0 su 5 stelle An outstanding effort put forth by someone with leftist sympathies ... 16 aprile 2015
Di Philip W. Tatler - Pubblicato su
Formato: Copertina flessibile Acquisto verificato
An outstanding effort put forth by someone with leftist sympathies who truly wishes alternate energy was viable, but is honest enough to come to grips with the current reality of the industry. Many will scan the first half and think Ozzie leans right politically in the debate, only to find with thorough reading of the second half of the book, he actually leans left. Time well spent!
24 di 26 persone hanno trovato utile la seguente recensione
5.0 su 5 stelle An Environmentalist Gut Punch 24 agosto 2012
Di Isaac M. Gaetz - Pubblicato su
Formato: Copertina flessibile Acquisto verificato
Zehner goes right after many environmentalist sacred calves and holds nothing back in Green Illusions. The result is a really intriguing work that hammers home several key points. I'll try to summarize a few of them.

1. Increasing energy production sources (by using power from "renewable" wind, solar, geothermal sources etc. or improving fossil fuel technologies) results in a reduction in energy prices, which history has proven time and time again, results in a rebound effect in which consumption rises, consuming whatever short term gains were accomplished.

2. Comparing the environmental impact of renewable energies to fossil fuels is fundamentally flawed because being more environmentally friendly than fossil fuels is a preposterously low bar which to clear. This results in "less bad" technologies being portrayed as "good" because they are slightly better than the previous "bad" options.

3. Looking exclusively at the power generation side of the equation, whether fossil or renewable, is an approach akin to treating a symptom. Environmentalism would be more productive treating the causal side of the equation, which is consumption.

Zehner's Green Illusions first section is quite similar to Robert Bryce's Power Hungry . Zehner systematically goes down the list of energy technologies, fossil and renewable, and describes the realities of both their energy production potential and their environmental impacts.

The latter half of the book is closer in tone to Robert Laughlin's Powering the Future . Zehner describes real solutions and ideas of what could occur to actual address the world's power problems via practical reductions in consumption through social, political and cultural changes.

Zehner doesn't have all the answers, but he seems to have honed in on the problem, and as they say, before we can agree on the solution, we have to agree on the problem.