Practical Answers
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How to Make Sausages
A wide variety of sausages are produced in countries throughout the world. Most are produced from meat (especially pork and beef) but in some countries, fish sausages are also popular. Vegetarian and vegan sausages are available in some countries, made from tofu, nuts, pulses, mycoprotein, soy...
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What is Appropriate Technology?
Technology: choice or compromise?
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Solar Photovoltaic Water Pumping
The advantages and disadvantages of solar water pumping are outlined in this document.
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Extrusion of Foods
There are two types of extrusion process: cold extrusion, which mixes and shapes foods such as biscuit dough and pasta without cooking them; and hot extrusion (or extrusion cooking).
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Cable Selection in Small Off-grid Solar energy Installations
Ideally, voltage drop in a solar energy installation should be
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Spurs and Dykes for Flood Protection
Spurs and dykes are structures that protect river banks and contain flood waters. They can be built by communities using stones and wire.
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How to Build a Small Vertical Shaft Lime Kiln
An example of a continuous production, mixed feed kiln from Zimbabwe.
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Solar Thermal Energy in Nepal
Renewable energy practices in Nepal
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Health Care Waste Management in Developing Countries
This brief gives an overview on health care waste treatment options focusing on incineration.
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Interlocking Stabilized Soil Blocks
Using Practical Action's technical information, Andrew from Nairobi is developing many new enterprises using locally available resources. His most recent is the development of interlocking stabilized soil blocks.