Feb 28, 2009

Paper vs. Plastic?: BYOB


Bring Your Own Bag for Shopping. Original bag picture from buffaloreuse.wnymedia.net


What bag is the best? paper or plastic? My answer: Bring Your Own Bag !

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Feb 23, 2009

Surface Radiation Calculations


Basic system thermodynamics revisited (click image to view full size)
A colleague of mine emailed me an article (pdf link) containing the above figure. The author Ashworth (2008) contends among many things that the radiation energy balance shown in the figure above is wrong, and that it violates 1st and 2nd law of thermodynamics. I am writing this post to show that Ashworth is completely off base on that point and is not even close to interpreting the above figure correctly. I am not able to decipher any 2nd law implications from the figure though.

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Feb 17, 2009

Game-changing clean energy technologies?

During my recent Ph.D. defense, one of the questions was whether there were any potentially game-changing energy technologies out there, and I put the question to our audience. What do you think are the potential game-changers? There are a multitude of good ideas, and to (mis)quote Chairman Mao, we should "let a thousand ideas bloom".

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Feb 4, 2009

MIT Clean Energy Competition

The MIT (Masschusetts Institute of Technology) Clean Energy Entrepreneurship Competition for the year 2009 opens tomorrow (Feb 5 2009). It is open to full time students in the US. (However, non students can be part of the team as long as at least one of the team members is a student at a US university) [rules] Deadline for submissions is Feb 16 2009.

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Feb 2, 2009

Energy ads: Superbowl XLIII

Here are a couple of GE ads from the Superbowl
Wind energy:


Smartgrid technologies:


GE is working with a handful of utility companies (Duke Energy etc.) to promote smartgrid technologies. I also came across the supposedly eco-friendly Steelers superbowl t-shirt, made from organic cotton. Apart from this, I do not see how selling this t-shirt would be eco-friendly..

 
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