The Ullo community in Ghana has a school that houses between 1000 and 1500 students. Every day, cooks make 2-3 meals for these students, using stoves by the school in the kitchen area. The kitchen uses about 3500 L of water every day. The current stoves being used are shown in the figure to the right.
During the dry season, there is a higher rate of burning as a result of the higher degree of firewood drying and a relatively low relative humidity. This could cause the firewood to supply heat for about four (4) consecutive days before finishing. The wet season, on the other hand, does experience a much lower burning rate because of the high moisture that may be contained in the atmosphere (high relative humidity), hence taking an equal amount of firewood or fuel to supply heat for about six (6) days for cooking.
After several meetings in 2020, the teams proposed a number of designs which are still undergoing assessment.
Find below the report prepared by the EWB team at KNUST