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21 items found (Showing 1 - 10)
  1. 1981-12-19 This is a question we have been asking for some time. The idea is to prepare pellets using an appropriate technology pelletizer, using waste biomass or charcoal made from it. We do not have much to report at this time except that an engineer has designed and is making a simple pelletizer for us....  
  2. 2010-10-20 Photos of the modified seed dryer described in EDN 109  
  3. 2011-07-20 We share many ideas in EDN for agricultural techniques that can increase crop production. Higher production translates into more food and potentially more income; this is very important, especially for farmers whose livelihood comes from a small piece of land.Another way to increase food supply...  
  4. 2005-07-20 Feedback from the ECHO networking with information on cookstoves and indoor pollution.  
  5. 2004-01-20 The Malian Peanut/Groundnut Sheller is a simple machine, requiring less than $10 US of materials.  
  6. 2007-10-20 For many years, a popular demonstration on ECHO’s farm has been the rope washer pump, made from materials that are available in any country—PVC pipe, an old tire, rope, washers made from tires, and a little wood. Because it can be made on the farm it can also be repaired by those who made it.  
  7. 2004-10-20 Smoke from open fires can be a nuisance, and it can also lead to severe health problems. The Intermediate Technology Development Group (ITDG) has issued a document called “Smoke—the Killer in the Kitchen” that shares statistics on indoor air pollution caused by burning solid fuels like wood,...  
  8. 2016-10-18 Bamboo’s reputation is largely based upon intrinsic peculiarities of certain varieties. The plant can grow a meter a day and is the staple diet for giant pandas; though a grass, it can grow to 30 meters tall with hollow wooden stems which are stronger than steel; and bamboo has a reproductive...  
  9. 2018-07-18 Recently, ECHO Community member Brad Ward asked on our online forum about metal silo construction. “I'm going to be building a 3.5 cubic meter metal silo. I have come across a couple of good resources online that cover the topic pretty well, but I would love to hear from those of you who have...  
  10. 1994-04-19 The “tubular juice pasteurizer,” as it is formally called, strikes me as an “appropriate technology” with unusual promise. It is designed for situations where a large quantity of fruit is available for a limited period of time and for which there is no ready market or where marketing is not...