Timbuktu Chronicles writes –
“Sunny Steveson fabricated a self freezing system, he used an old 52 British thermal unit (BTU) air conditioner and tubes that he passed through the concrete walls to enter the freezing room. The air conditioner and the room get electricity from a 6KVA generator…The process takes 10 to 12 hours to fully freeze water and turn them into solid blocks of ice…he has the ability to build a cold storage and use his technology not only to freeze water and make ice, but also to freeze perishable products for the long term. He said, “The only difference between his invented concrete freezer and the imported one is that his freezer is made with concrete while the imported one is made with zinc.”” – Link.
- Nicaraguan Know-How – Revisiting, revamping, and reusing forgotten technology. Tim Anderson describes the homemade solutions he saw on a recent trip to Nicaragua: hand-pedaled bicycles, reused school buses, horse-drawn carriages, sock coffee filters, and ancient cooling systems and water filters abound. MAKE 02 – Page 30. Subscribers–read this article now in your digital edition.
- Chinese Ingenuity. Look for the technology of the future in the oldest civilization. MAKE 04 – Page 38. Subscribers–read this article now in your digital edition.