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  1. Session:With 90% of the world’s engineering focused on 10% of the population, a significant opportunity exists to serve the most vulnerable and marginalized people in developing countries. Many attempts have been made to develop so-called appropriate technology, with some success, and much...
  2. Drying can be expensive. Fuel is expensive and the cost of electricity in many countries is prohibitive. And yet sunshine is in abundance where tropical fruit grow. Solar drying makes so much sense, both economic and environmentally. Solar drying by the way is NOT photovoltaic. We don’t try to...
  3. 15-11-2022 Session :Lessons learned from small farm equipment in the field. Topics to be covered: What sustaining equipment can help the most at you mission. Church missions as equipment lending centers. Multi-use farm cart. Equipment as checked baggage. Asking for your vote to inform what equipment we...
  4. The UC Davis chimney solar dryer was designed to provide efficient drying even in hazy or partially cloudy conditions. Constructing the dryer is simple, and it can be built from low-cost materials found locally in markets and shops around the world. The objective of this manual is to provide the...
  5. Globally, drying is the most widely used method for preserving foods for use in the home or for sale. When drying foods such as fruits, vegetables, spices, herbs and nuts value is added by dryingand in such cases an investment in improved drying technologies may be economically viable. This...
  6. There are two main reasons for drying food: to prevent (or inhibit) the growth and activity of micro-organisms and hence preserve the food to reduce the weight and bulk of food for cheaper transport and storage. This technical brief describes some of the requirements for proper drying and...
  7. This information service on biogas technology has been developed and produced on the order of the GTZ project Information and Advisory Service on Appropriate Technology (ISAT) for the ISAT Website in a collaborative effort. Information included in this document include application and production...
  8. This information service on biogas technology has been developed and produced on the order of the GTZ project Information and Advisory Service on Appropriate Technology (ISAT) for the ISAT Website in a collaborative effort. Information within this document includes the basics of biogas, the...
  9. 01-01-1986 Over the centuries, the treadle has been the most common method of using the legs to produce power. Treadles are still common in the low-power range, especially for sewing machines. Historically, two treadles were used for some tasks, but even then the maximum output would have been quite small,...
  10. 01-01-1983 This study is an assessment of the "appropriateness" of biogas technology in meeting some of the needs of India's rural population. Such an assessment is quite complicated, despite claims that a biogas system is a simple village-level technology. While there is evidence that biogas systems have...