Showing posts with label Planet. Show all posts
Showing posts with label Planet. Show all posts

Wednesday, July 13, 2011

Tomorrow's Energy - Hydrogen, Fuel Cells, And The Prospects For A Cleaner Planet

The hydrogen economy is the topic of many discussions that often are more like ideological debates than rooted in reality.

This is partly due to the fact the literature on this subject is either very technical, or written as some form of wishful thinking daydream.

In his book Tomorrow

It is a book that is well worth reading for all who are interested in renewable energy forms. The writer Peter Hoffmann is a promoter of the use of Hydrogen as fuel for more than 30 years. With this book he proves that he not only knows his stuff. But is also capable of presenting it in clear accessible terms.

Because of his background as advocate of this energy form one might expect a certain preoccupation in favor of hydrogen. I found this not to be the case, his point of view is clear, the information in this book allows the reader to take an educated standpoint of their own.

Even the chapters that are covering the chemical characteristics of Hydrogen are written in an engaging objective form. His views on the energy needed to generate the fuel, transportation, and the further development of the fuel cell itself all have their place in the book. And challenges do remain, this technology is not about to bring about utopia in a fortnight.

His analyses on the need to transform our carbon based energy pattern to a more ecological friendly one is clear and not one of those pointing finger kind of analysis that some ecological groups seem to favor. His tone remains firm on his own point of view but open to reason.

Hoffmann discusses a rather extensive amount of possibilities for the Fuel Cell in my opinion he is overdoing this a bit. When reading through them I got the feeling of right got the point let's move on.

I'm not sure if on purpose or not but other hydrogen applications and possibilities are a bit overshadowed by this preoccupation.

One point that can cause some misunderstandings is the fact that he rather freely changes measurement units. Most of his intended public will not have energy conversion formula's hard wired in their brain.

The form of writing about each topic is original. Throughout the book he is covering the topics in a past, present and future style.

There are critics who feel that this book is incomplete, and there are some technical details left out. But the reader that wants to get more in-depth technical and chemical information is by other publications already well provided for.

If you want to get a clearer picture on the topic of hydrogen, fuel cells and energy in general Hoffmann's book is a good place to start.

Tomorrow's Energy: Hydrogen, Fuel Cells, and the Prospects for a Cleaner Planet Peter Hoffmann paints a vivid picture of the possibilities of Fuel Cells and a deeper understanding of the phenomenon Hydrogen and Fuel Cells. (ISBN 0-262-08295-0 2002 MIT Press Paperback).

Hans reads and writes about Photovoltaic systems and other sustainable energy sources at http://www.alternative-energy-guide.com/


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Tuesday, July 12, 2011

Review - Eaarth: Making a Life on a Tough New Planet

Eaarth: Making a Life on a Tough New Planet, Bill McKibben, 2010, ISBN 9780805090567

Mankind has irreparably changed the Earth's climate and weather conditions. This book gives the details, and tells how to survive on this new world.

The Earth that mankind knew, and grew up on, is gone. A new planet needs a new name; hence Eaarth. It is a place of poles where the ice caps are severely reduced, or gone. It is a place where the oceans are becoming more acid, because of excess carbon absorbed into the water, not to mention the toxic chemicals and other pollutants being dumped into it. It is a place of more extreme weather patterns.

The average person might not care if an entire glacier completely melts away, like the Chacaltaya Glacier in Bolivia. Those living downstream, dependent on that glacier for their water supply, will certainly care. Since 1980, the tropics have expanded worldwide by 2 degrees north and south. Over 8 million more square miles of land are now tropical, with dry subtropics pushing ahead of them. The chances of Lake Mead, which is behind Hoover Dam, running dry in the next 10 years, have reached 50 percent. The residents of an oceanside town in North Carolina are spending up to $30,000 each to place large sandbags in front of their homes to keep the ocean at bay.

The times when America, or the world, can simply grow its way out of its financial problems are gone forever. Building enough nuclear power plants to get rid of even a tenth of the climate change problem will cost at least $8 trillion. According to one estimate, America needs to spend over $200 billion a year for decades, just on infrastructure, to avoid the kind of gridlock that will collapse the economy. A small village in Alaska is being evacuated, because of rising sea levels, at a cost of $400,000 per person. There is not enough money on Earth to evacuate everyone threatened by rising sea levels.

What to do? Some people are taking another look at small-scale agriculture, getting away from a dependence on artificial chemicals and fertilizer. Eliminate the middlemen, like advertising and transport, and put more money in the farmer's pocket. Along with local agriculture, consider local power generation.

This is a really eye-opening book. The first half is pretty bleak, showing just how bad things have gotten. But, there is plenty of hope in the second half of the book. It is very much recommended.

Paul Lappen is a freelance book reviewer whose website, http://www.deadtreesreview.com/, has over 800 reviews on all subjects, with an emphasis on small press books.


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