EcoRenovator – Heat Pump Forum
http://www.lowtechmagazine.com/ – A great site full of interesting articles about technology of ages past
The Museum of RetroTechnology – Just what it sounds like
http://openlibrary.org/ – A great source of book pdfs. Punch up refrigeration published before 1935!
Project Gutenberg – 42,000 free ebooks for kindle, android and ipad
http://www.rustyiron.com/literature/Flywheel_Explosions.pdf – Pictures and descriptions of flywheel explosions!
BuildItSolar: Solar energy projects for Do It Yourselfers to save money and reduce pollution
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http://www.mit.edu/people/dpolicar/writing/prose/text/thinkingMeat.html – Short, but funny!
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FORA.tv – Videos from the World’s Best Conferences and Events – A great place for speeches and lectures
Metanoia Films – Some excellent free documentaries
— Watch Now – The film ‘Earthlings’. About animals and our relationship with them.
Top Documentary Films – Watch Free Documentaries Online
Documentary Network – Watch free documentaries and films online
Watch Free Documentaries Online | Documentary Heaven
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Kickstarter – Fund really cool projects. Crowd source investment.
What’s Mine is Yours: The Rise of Collaborative Consumption
Open Source Ecology – Great open source project producing industrial machines
http://socialistworker.org/ – News publication of the Internationalist Socialist Organization
Professor Richard D. Wolff | Economics Professor – The website of the Marxist economist. Excellent speaker!
The GNU Manifesto – GNU Project – Free Software Foundation (FSF) – Definitely worth reading
Why “Free Software” is better than “Open Source”http://www.appropedia.org/Open_Design_Appropriate_Technology#Terminology
The Case for Open Source Appropriate Technology
Richard Stallman — On “Free Hardware” Open Design-Based Strategies to Enhance Appropriate Technology Development – Interesting, but a little shady. An article by an inventor on why he does not patentTruthout – Some great insightful articles.
Haymarket Books – A book publisher with some great titles.
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HVACR Heritage Center Canada – An incredible collection of refrigerators and other equipment with hundreds of pictures.
Intro / Bitzer Home – Refrigeration compressor manufacturer, open drives
RParts – www.rparts.com – A source of refrigeration parts including open drive compressors
Heat and Entropy – Some explanation of entropy
Law of Maximum Entropy Production – Very important!
Sunfrost Refrigerators – Manufacturers of low energy consuming refrigerators. Expensive, but you get what you pay for in this case.
Article on Refrigerator Efficiencies and Improvements There Of
http://fourmileisland.com/IceBox.htm An awesome passive refrigerator, that utilizes the cold winter temperatures to freeze a block of ice for refrigeration year round. It uses a simple counter-flow two-phase thermosiphon with radiator coils outside, and a working fluid to dissipate the latent heat of liquid going through phase change and freezing. Ingeniously simple!
musings on entropy 
Questions or Comments?