Posted: 13th June 2011
Posted: 10th April 2011
The Current & next issue of "About People" magazine.
This is the cover of the current and next issue.
The next issue will cover carbon training, 100% renewable energy, stories on three sustainable companies, carbon farming, refrigerants they are a greater danger than CO2. A story on another indigenous cultural group from South America
Also included in the next issue is a story on an integrated recycling manufacture that takes 19 streams of waste and recycles all waste with nothing going to landfill and also produces 120,000 tonnes of potable water provides all the power for processing the waste inputs with excess going to external use.
I like to receive feedback on the magazine and your thoughts on the content. I am also interested in people's own story, your own experiences in life the people who has helped you in your area of expertise.
Posted: 8th November 2010
Radiative Cooling. The first ten minutes of a workshop:
Who should watch this video
Who would find this information useful - Anyone who is involved or interested in the design and construction of our built environment i.e. architects, structural engineers, builders of industrial, commercial and residential buildings. specifies, developers, real estate, researchers and the general public.
This video demonstrates how we can reduce our heat loads in our urban environment and inside the buildings we live and work in.
Full length of Radiative Cooling workshop - length 1.00hr Speakers: Prof Geoff Smith & Dr Angus Gentle - UTS
Cooling buildings and cities naturally with higher albedos and night sky radiation
Large cooling capability without external power is easy once you know which materials and structures to use. In addition these approaches to cooling pump heat directly back into space, to improve microclimates around buildings. In contrast compressor driven (and solar absorption) cooling exacerbate the urban heat island problem, which arises mainly from the combination of low urban albedos and high thermal masses. Various ways of using both high solar reflectance and night sky radiative cooling is discussed ranging from special roof paints to simple systems which collect and store sub-ambient "cool" at night. After introducing the principles of radiative cooling, including which surfaces work best, dealing with convective gain, moisture condensation, and role of humidity, exciting initial results with prototype collectors 3.6m2 in area is presented. Models have been developed which predict observed sub-ambient cooling powers, and can be used in design.
Professor Geoff Smith and Dr Angus Gentle
University of Technology, Sydney
Geoff Smith has worked on materials for solar energy, radiative cooling, day lighting and lighting for over three decades, often with industry. A number of products have resulted. Much involves use of nanostructures and thin films. Just out is his book coauthored with Prof Claes Granqvist from Uppsala, Sweden "Green nanotechnology: Solutions for sustainability and energy in the built environment" which shows in detail how we can best get back "in tune" with nature, and what to expect if we make the effort.
Angus Gentle has degrees in both Applied Science and Electrical Engineering from UTS. His PhD involved research on energy efficient window coatings including new work on thermochromic thin films. He has since carried out research on solar cells at UNSW and has recently achieved several advances in radiative cooling coatings and systems at UTS