Improved biomass cookstoves has been a topic of research for more than 40 years, but still 2.6 billion people cook over an open biomass fire. A large volume of information on the biomass cookstoves though widely scattered, is available in the literature. This paper gives a comprehensive review...

Escalating demand for a cost efficient energy source has opened up opportunities for the utilization of solar energy. The abundance of solar energy is making a noticeable impact in the lives of rural people. This energy is being tapped for the drying of agricultural products. Numerous designs of...