Our world is developing very fast. This fast paced development needs a lot of energy. Our
conventional, non-renewable sources are not enough to satisfy this huge demand …

Solar water purification by distillation has been used for decades as a method of making
water safe for human consumption, but it has not been commercialised in Africa. At one …

This paper introduces a new solar crop dryer design for small scale entrepreneurs going into
crop storage and marketing. It is an indirect drying system requiring 2 m 2 ground space for …

This chapter advocates and exemplifies a change in delivering mechanical engineering
design (MED) to undergraduate students. It looks at, and critiques the current delivery mode …

Alloy solidification is a two stage process, which starts by nucleation and ends by growth of
solid phases. Subsequently, number, distribution and morphology (dendritic or nondendritic) …