Energy Myths and Realities review Ð 3

review Energy Myths and Realities

Energy Myths and Realities review Ð 3 Ô ➵ [Read] ➱ Energy Myths and Realities By Vaclav Smil ➿ – Dogsalonbristol.co.uk There are many misconceptions about the future of global energy often presented as fact by the media politicians business leaders activists and even scientists wasting time and money and hampering thErgy challenge When will the world run out of oil Should Energy Myths eBook #8608 nuclear energy be adopted on a larger scale Are ethanol and wind power viable sources of energy for the future Vaclav Smil advises the public to be wary of exaggerated claims and impossible promises The global energy transition will be prolonged and expensive and hinges on the development of an extensive new infrastructure Establishe. In Energy Myths and Realities Vaclav Smil brings a pragmatic view to popular ideas for our energy system of the last few decades electric cars nuclear decentralized energy production peak oil carbon seuestration biofuels and wind power His key message is that energy technologies are often over hyped often ignore environmental conseuences or infrastructure reuirements and that transitions are slow His analysis benefits from an extensive and current reference list mostly journal articlesWhile Smil rightly critiues excessive technological optimism at times he overreaches Selected facts are contorted to create an energy myth for Smil to debunk dismissing those who made foolish claims as naive or incompetent As an example when Smil constructs and estimated of land use reuirements for wind power he calls out wind capacity factors used by industry and academia as overly optimistic Although the range of 20 25 percent has been freuently assumed in recent literature the most complete examination of the actual record for the EU the world's largest concentration of wind power shows that during the five years between 2003 and 2007 the capacity factor amounted to less than 21 percent This means that the cost of wind power is two thirds higher and the reduction of CO2 emissions is 40 percent lower than was previously assumed p124 Source Boccard N 2009 Capacity factor of Wind Power Realized Values vs Estimates Energy 272679 88Smil's premises are wind capacity factors and power production per unit area estimates are overstated From this he concludes that CO2 reductions potentials are much lower than often stated His first premise is misleading He spends the first part of the chapter mentioning how wind power has grown substantially in recent years and that turbine size has increased Turbine capacity factor estimates have improved along with turbine size12Smil should have used estimates for new turbine installs not the average over the several years In the same paragraph he cites capacity factors of 70% for coal and 85% for nuclear while also citing data that total electric production capacity factor is 50% of which nearly all is coal nuclear and gas These figures are incompatible The 70% and 85 figures are for newer plants not average Many plants are kept in reserve because they are older and less efficient These older plants may have capacity factors in the range of 30 40% thus the net 50% figure The same comparison should be used for wind power using new turbine capacity factors to calculate the space reuired for new turbines Using the appropriate capacity factor erases Smil's claim of overstated reduction potential It's easy to pick out overly optimistic projections of certain energy technologies and dismiss them as such which Smil does But Smil doesn't do a great job of presenting the context Were the majority of promoters overly optimistic or was it a minority within the field Did they wield any substantial wealth or political power or were they just academic exercises or toothless celebrities Jacobson's projections for all renewables by 2030 is a example of the analysis without much power Even if there was p

free read Ð eBook or Kindle ePUB í Vaclav Smil

There are many misconceptions about the future of global energy often presented as fact by the media politicians business leaders activists and even scientists wasting time and money and hampering the development of progressive energy policies Energy Myths and Realities Bringing Science to the Energy Policy Debate debunks the most common fallacies to make way for a constructive scientific approach to the global en. I liked the core idea presented by Smil that energy dreams are not properly connected to reality He presents many cases to prove his beliefs and I think he fairly mentions many uantitative results to support his ideas; however there are some failures in his book that should be discussed Although he tries to think about problems scientifically I would never name his book as ‘bringing science to the energy policy debate’ as his disagreements are not fully supported by science In some parts he just reviews the history and based on that review argues an energy or technology forecast for the futureI absolutely agree with Smil on the importance of timing and extend of future adoption of new energy sources but I believe he does not provide enough scientific evidence in many cases to make his conclusion For instance he only reviews the maturity durations of oil and natural gas in the US and tries to convince his audiences that any new source of energy needs to wait for at least half a century to be used in the country I was also surprised that he does not discuss about solar energy as much as other energy sources in his book it seems he just ignored itI believe he did a better job on the first part of the book ‘Lessons from the past’ on electric cars nuclear electricity and soft energy than the second Finally his uick summation in the conclusion chapter notes some good advice that could be pretty useful for technical authors in the field of energy Following such advice would reduce the number of publications that only play with mathematicalstatistical models and try to produce some forecast on the use of energy

Vaclav Smil í 3 free read

Energy Myths and RealitiesD technologies and traditional energy sources are persistent and adaptable enough to see the world through that transition Energy Myths and Realities brings a scientific perspective to an issue often dominated by groundless assertions unfounded claims and uncritical thinking Before we can create sound energy policies for the future we must renounce the popular myths that cloud our judgment and impede true progress. I picked up this book from Bill Gates' reading list and I really liked it Vaclav Smil takes credible well constructed swipes at almost all forms of energy generation This book examines basically all forms of electricity generation and even covers some engines or vehiclesDr Gretchan Bakke in The Grid mentions that there is than enough renewable sources of energy to power the world several times over Vaclav Smil explains how difficult it is to site construct harness and maintain those wind turbinesThere are no silver bullets when it comes to energy generation and usage Smil really got me thinking critically and I really enjoyed reading this book