Abstract: . . .  problems in developing countries where such materials have to be imported. Some countries do have a manufacturing base for solar thermal products but it is often small by no means widespread throughout the world. The market for solar products, such as solar water heaters, is small and growing only slowly. Solar passive technology, especially solar cooling, tends to be used traditionally in developing countries. Many technological . . .
. . .  predicting the performance of a system. The variability of the solar resource is such that any accurate prediction lends itself only to complex analytical techniques. Simpler techniques are available for more rudimentary analysis. These techniques can be found in the relevant texts. Solar thermal energy applications Water heating Low temperature (below 100ºC) water heating is required in most countries of the world for both domestic . . .
. . .  seen as a very expensive item by over 53% of the respondents, especially since it can only cook during the day. In seven out of ten project areas visited firewood is freely available and there is little incentive for people to buy or use the cooker. Strong winds and dust disrupt solar cooking in some areas, although this could be solved by making the cooker more robust. Socio-economic factors appear to influence adoption more . . .
. . .  Socio-economic factors appear to influence adoption more than the technical features of the cooker. The survey showed that choice of dissemination method or approach has affected adoption. This is true especially where the wrong choice of target group and area is made. Source: Stephen Gitonga, Practical Action East Africa, Kenya  . . .
. . .  especially since it can only cook during the day. In seven out of ten project areas visited firewood is freely available and there is little incentive for people to buy or use the cooker. Strong winds and dust disrupt solar cooking in some areas, although this could be solved by making the cooker more robust. Socio-economic factors appear to influence adoption more than the technical features of the cooker. The survey showed that . . .
. . .  rely on sophisticated, exotic modern materials for their manufacture. This presents problems in developing countries where such materials have to be imported. Some countries do have a manufacturing base for solar thermal products but it is often small by no means widespread throughout the world. The market for solar products, such as solar water heaters, is small and growing only slowly. Solar passive technology, especially . . .
. . .  Technologies, Indian Institute of technology and the British High Commission, 1997. 2. Karekezi, S. and Ranja, T., Renewable Energy Technologies in Africa, AFREPREN / SEI, 1997 3. Twidell, J. And Weir, T., Renewable Energy Resources, E & F.N. Spon, 1990. 4. Hulscher, W., and Fraenkal, P., The Power Guide, IT Publications, 1994 5. Rozis. J. And Guinebault, A ., Solar Heating in Cold Regions, IT Publications, 1996 6. Boiling Point, . . .
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