Practical action publishing dez 1983 (2 Ergebnisse)

Taschenbuch. Zustand: Neu. Neuware - Like all forms of renewable energy, micro hydro-electric power has recently attracted worldwide interest; and yet the basic technology is not new. While seeming to offer power at extremely low annual running cost and with very few technical complications, there are yet few countries where its use has become widespread. It is found that design, installation, and management have all to be treated very care-fully. It has been demonstrated in many places that small hydro power can make a very important contribution towards rural development, such as in the Peoples' Republic of China, where some 80,000 mini hydro plants have been installed over the last twenty years. But there are pitfalls for the unwary. This paper introduces the techniques and a guide how to approach mini hydro projects. It is concerned only with systems of up to approximately 100kW output.…

Taschenbuch. Zustand: Neu. Neuware - This book aims to meet the needs of all those concerned with development projects involving waht are ineffect, simple engineering works in rural areas. It will be of use to district officers, extension workers and the staff of development agencies and all non-governmental agencies in the development field. It will be valuable to volunteers who do not have ready access to technical assistance, and will also be of interest to anyone planning work on a small holding, homestead or farm.Chapters deal with site surveying, engineering materials, water supplies, sanitation in general, planning and construction of roads, simple river crossings, bridges and small dams and draws on the advice of experts in each subject and is the result of many years' practical experience in developing countries.…