Appropiate Technology
Refers to a technology that is suitable to the social and economic conditions of a particular geographic area, that also is environmentally sound, and promotes self-sufficiency among those using it. It aims to increase the resilience of a community promoting the local economy and strengthening social cohesion.
A masonry stove is a high efficiency heating system based on the thermal inercia properties of some materials like brick and stone of accumulating heat in the same way that a battery accumulates electricity.
A compact and efficient heater, which also allows you to cook, reheat, and dry food. It’s large radiating surface provides heat. It feeds on small pieces of wood burning slowly and efficiently thanks to a restricted air intake. Inside there is a second sealed container, and hot gases rise between the two spaces.
Installed in a south facing wall of a house, facing the sun, and connecting with the interior. Aluminum cans are heated through the glass thanks to the greenhouse effect; cold air enters the bottom outlet and rises as it warms up, finally enters the house through the upper outlet at more than 40 degrees Celsius.
Water is heated in the radiator, which is wrapped in aluminium foil cut from beer cans to increase thermal conductivity. Due to the thermosiphon effect (hot water expands and weighs less) hot water rises, displacing cold water to the bottom outlet. Design and construction: Toni Socies.
A pump designed to move water from a tank located at shallow depth, ie removing rainwater collected in an underground tank. Each depression of the arm produces over 1,5 liter of water. The body of the pump is a recycled fire extinguisher, the base comes from a scuba diving oxygen tank, and the piston is made of an old shaft trimmer.
Automatic soil siever made with a supermarket trolley and a recycled mitre saw. The stones and gravel slide towards the basket while the sieved soil goes though the wire cage.
Design and construction: Miquel Ramis.
Traditional bread oven build with broken roof tiles, soil and insulated with ash and local rice husks.. Tested several times with great success ( bread, pizzas and sucking pigs...)
Left to right: Miquel Angel, Pere Joan, Ramón, Rafael, Gonzálo, Miquel Angel. .
Forge built with car parts, galvalized rubing, iron and a manual fan. The anvil is a piece of rail road. The forge heats up tp 1600ºC, enought to burn steel like if it were wood.
Flour hand mill, built with stone. The design is ancient, used by the roman army, and still in use at the north of africa. Allows you to grind flour or, like in our case, broken roof tiles to obtain artificial puzzolana.
