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Nepal Improved Stove by Simon de Trey White WWF-UK |
There are 3 billion people in developing countries that rely on solid fuels for almost all of their cooking. The question can be asked how many of these over 800 million households cook with an improved stove? The answer comes from a new study by the World Health Organization (WHO) and the United Nations Development Programme (UNDP). Like any good mystery story you will have to skip to the end for the answer. All I will say is that the results may surprise you.
Before turning to the numbers, it is important to define an improved stove, and this is actually quite a contentious subject among specialists. The original programs were developed during the energy crisis of the
1980s and stoves were developed mainly to conserve biomass fuels. So energy conservation is the first definition. During the
1990s the literature on indoor air pollution was starting to link smoky stoves and health issues. At the time it was accepted that you need a chimney to remove smoke from the house. Thus energy conservation and smoke removal became a popular mandate. More recently in the
last 10 years there is beginning to be evidence that the pollution from incomplete combustion of biomass energy might be the main health issue. Chimneys simply move the smoke to the outside only to drift back indoors. Now let’s add to this mix climate change and green house gases that must be taken into consideration. The demands on the humble biomass stove seem to grow and grow.
More below....