Energy consumption for cooking accounts for most (90%) of the total energy used in developing countries. Solar cookers may play a significant role in conserving traditional cooking fuels (firewood, cowdung cake, etc.). Here, we examine different solar cookers (the solar oven, a hot-box solar...

A natural circulation type solar water heater has been fabricated and installed at the CAZRI Guest House. Its field performance has been evaluated. The heater provides 2001 of hot water at 50–60 °C at all times. This solar water heater is economical.