Selasa, 28 Februari 2006

Aerogels finding new applications

Silica aerogels are extremely low-density solids nicknamed "frozen smoke" that hold the record for being the best insulators known. Their widespread adoption could dramatically increase energy efficiency in many areas of technology. While their production costs are still prohibitive for everyday uses, their potential is being realized more and more within industrial applications.

Wired News: A Solid That's Light as Air
Wikipedia - Aerogels


Aerogels made out of carbon can store an incredible amount of electricity for their size and are generating interest especially among those developing hybrid cars.
Aerogel Composite Announces ENERGel(TM) Ultracapacitor

Jumat, 24 Februari 2006

Algae remove CO2 and NOx from flue gas



Greenfuel Technologies has developed a method to use algae to remove CO2 (50-80%) and NOx (80-90 %) from flue gas. The algae can then be used as biofuels thereby replacing fossils.

Kamis, 23 Februari 2006

a solid idea


A smart solution to the problem of tree roots uplifting and breaking sidewalks: rubber sidewalks made from 100% recycled car tires. Air and water can pass to the root structure, and the material’s flexibility allows the tree to grow more freely. (Truck sold separately.)

Rabu, 22 Februari 2006

Publishing LCA data

This year's International LCA Conference (InLCA/LCM 2006, held in Washington DC, October 4-6) will focus on building and supporting the US LCI Database. We are sponsoring a contest to increase awareness of the US LCI Database and to encourage university professors and students to provide new data to it. This contest will continue into future years. There will be a prize for the best submission. Criteria and guidelines are posted at: http://lcacenter.org/InLCA2006/Student-Competition.pdf Please pass this along to any colleagues who may be interested, and we hope to see you in October.

The definition of industrial ecology

Maybe this blog can come up with a good definition of industrial ecology.

First, let's agree on some principles of a definition here.
1. A definition should be clear and unambiguous. Thus "the science of sustainablity" is not a good definition, because it introduces this nasty and vague term sustainability.
2. A definition should at the same time be open enough to accommodate unorthodox methods and analyses. Thus, a term like "quantitative" should not be part of it, as it would rule out all non-quantitative approaches.
3. IE is primarily a science, a field of research. In that way, it is similar to ecology, economics, astronomy or history. Next to it, people may connect it with strategies, but this should not be part of the definition. When economics is "the study of the choices people make to cope with scarcity", there is no mentioning of using economic theory to become rich. Thus, IE should not be defined as "the shifting of industrial process from open loop systems, in which resource and capital investments move through the system to become waste, to a closed loop system where wastes become inputs for new processes" (Wikipedia), just becauses it mixes up theory and action.
4. ...
5. ...
6. ...
Other principles will come in an interaction. Shall we agree to discuss principles by way of such enumerated points?

Then, back to IE. As always, ecology provides a useful analogue here. Three useful definitions on the web for ecology are
a) The science of the relationships between organisms and their environments
b) The study of the relationship between plants and animals (including humans) and their environment
c) The study of how organisms interact with each other and their physical environment.
Each of these three can be easily changed to fit IE:
a) The science of the relationships between industrial activities and their environments
b) The study of the relationship between economic actors (including humans) and their environment
c) The study of how industries interact with each other and their physical environment.

I would appreciate to get some comments on these trials.

Selasa, 21 Februari 2006

gmail account

I've created a gmail account to have some disk space to exchange files related to weblog stuff. You can get the usna and pw with me if you need it.

lunch lecture on power systems

Lunch lecture network sustainable development

The crucial integration of power systems: combining fossil and sustainable energy using fuel cells. Dr. Kas Hemmes

21st of February 06, 12:30 Mekelweg 10 @ the Cultural Center

Hurry! its a late post.