Equipment
Indirect solar collector and drying cupboard
A solar air collector that heats air separately, then passes it through a shaded tray cupboard and out of a chimney. The product never sits in direct sunlight.
Equipment
626 sourced equipment pages: vessels, tools, appliances and built structures.
Everything
Built structures
Sudanese community matmora for sorghum
A Prolinnova-Sudan field catalogue describes a community matmora grain pit, 1.25 m deep and holding 16 tonnes of sorghum as a drought reserve. It gives no village, diameter or construction specification.