Search Results for: "energy density"
Relevance | DateWind Is Not Power at All (Part I – Overview)
By Kent Hawkins -- September 8, 2010 11 CommentsBased on policy pronouncements of governments, the media, and Left environmentalists, one might believe the world is about to enter the renewable energy era. In reality, however, the “new” is about a long gone era that ended before the dawn of the 20th century. Then the primary fuel was wood. Other renewables, including water and wind, were used because they were available and technologically harnessable for some very localized situations.
However primitive, renewables relating to the sun’s flow was the best our ancestors could do.
Will there be a renaissance of this era? Perhaps there will be, but it will be in a significantly different form and dependent upon a vastly transformed world, in both technological and societal terms, which will not be achievable for many generations. The question is: are we as societies and individuals prepared to make the necessary adjustments to realize the potential opportunities, which we do not currently understand sufficiently, that this may present in the future?…
Continue Reading(Book Review) James Hansen’s “Storms of My Grandchildren: The Truth About the Coming Climate Catastrophe and Our Last Chance to Save Humanity” (alarmism on steroids)
By Jim Hollingsworth -- August 20, 2010 65 CommentsMany scientists are concerned about the future and continue to study various aspects of our environment, including the climate. But, for Dr. James Hansen there is no doubt. Our world is headed for disaster unless we take immediate and drastic action to control greenhouse gases, especially carbon dioxide (CO2).
You have to give the man credit: He actually believes what he preaches. He shows pictures of his wonderful grandchildren and his concern for them is certainly evident. There is only one problem with what he shares: There is little evidence to support what he says.
Take this example:
… Continue ReadingPlanet Earth, creation, the world in which civilization developed, the world with climate patterns that we know and stable shorelines, is in imminent peril. The urgency of the situation crystallized only in the past few years.
Obama Gives Oil and Gas a Cold Shoulder (Ducking Houston on his recent visit)
By Robert Bradley Jr. -- August 18, 2010 5 CommentsPresident Obama did not include Houston on his visit to Texas last week rallying his base and raising funds for Democrats for the November elections. The President was originally expected to be here but ended up in Austin and Dallas. Was this bypass a duck-out? After all, Congressman Kevin Brady (R. Tx.) pointedly invited the president to meet face-to-face with Houston energy workers on the other Gulf Crisis—the federal offshore drilling moratorium that threatens tens of thousands of jobs here and in much of the Gulf Coast region.
Sure, Obama’s Texas visit was not about helping Republican candidates or hosting a Tea Party event. But why couldn’t the president reserve an hour to talk to workers whose livelihoods depend on Houston’s largest industry – an industry that is being victimized by the President’s everyone-is-guilty drilling policy?…
Continue ReadingPower Density Primer: Understanding the Spatial Dimension of the Unfolding Transition to Renewable Electricity Generation (Part V – Comparing the Power Densities of Electricity Generation)
By Vaclav Smil -- May 14, 2010 14 CommentsEditor’s note: This is the conclusion of the series that provides an essential basis for the understanding of energy transitions and use. The previous posts in this series can be seen at:
Part I – Definitions
Part II – Coal- and Wood-Fired Electricity Generation
Part III – Natural Gas-Fired Electricity Generation
Part IV – New Renewables Electricity Generation
America’s dominant mode of electricity generation is via combustion of bituminous and sub-bituminous coal in large thermal stations. All such plants have boilers and steam turbogenerators and electrostatic precipitators to capture fly ash, but they burn different qualities of coal that may come from surface as well as underground mines, have different arrangements for cooling (once-through using river water or various cooling towers) and many have flue gas desulfurization to reduce SO2 emissions.…