Practical Answers
-
Low-Cost Civil works for Micro-Hydro Schemes
Civil works can suffer from cracking and significant scour damage. This document looks at some of the approaches that were taken to combat these problems in hydro schemes in the Cajamarca region of Peru.
-
How to Grow Your Own Onion Seed
Here is some basic information on how to grow onions and produce onion seeds. The document focuses on Burkina Faso but this approach can be used in many other locations.
-
Preparation of Risk Maps
This document looks at risk map usage in the emergency preparedness project in Peru, recognising that more comprehensive risk-reduction strategies are constantly emerging.
-
Fodder Conservation Using a Manual Baler
A simple method for baling fodder.
-
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).
-
Cable Selection in Small Off-grid Solar energy Installations
Ideally, voltage drop in a solar energy installation should be
-
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...
-
Solar Photovoltaic Water Pumping
The advantages and disadvantages of solar water pumping are outlined in this document.
-
What is Appropriate Technology?
Technology: choice or compromise?
-
Small-scale Off grid Solar PV Installation Manual
A complete installation guide for Solar PV systems up to 235W (or one solar panel.) Written in collaboration with Quetsol, primarily for applications in Guatemala.