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Appropriate Technology, Sustainable Living
DSCF1858Sunseed has a low impact fridge! This summer two French interns, Benjamin and Sylvain, joined us in the AT department. Their project was to design and experiment with a low impact fridge for Sunseed. The fridge design that they worked with was called “refrigerateur gigogne” and it aims to conserve food longer and fresher without using electricity. Felix Trombe was the first to experiment with this model in 1962 in France. He demonstrated that it is possible to produce a cold space for food and drink that is simple and electricity free. DSCF1859As it doesn´t use electricity, this fridge is perfectly suitable for an off grid area such as Sunseed. Only a few examples of constructions are available on the Internet and they do not include the storage of food, only the cooling process. Therefore the building of this fridge at Sunseed is very experimental. DSCF1844The temperature is cold enough to keep the food fresh inside the fridge and it is important that the temperature doesn´t rise during the day. Therefore, the way of using the fridge is essentialy this: – Put the fridge outside during the night in a place without trees, buildings or anything that can shade or reflect the heat radiation from the fridge. -Early in the morning (preferably before the rising of the sun)put the lid on the top and move it into a fresh place to keep the cold produced during the night. DSCF1850DSCF1851Well done to Benjamin and Sylvain with their internship, and the maintenance team of Diego and Mirko. DSCF1860

Appropriate Technology, Eco Construction, Sustainable Living, Tutorial

DSCF0503The African Fridge

By Andreia Bastos

Looking for a homemade way of cooling the drinks, we found out how to make an African Fridge.

The African fridge is mostly used to keep the low temperature of the vegetables, and it works very well with drinks also.

Luckily, we didn’t need to make one, Sunseed already has an African Fridge, lonely, waiting for us to fix it!

Make your own!

All you need is:

Two ceramic pots

Fine sand


Wet towel or cotton fabric

DSCF0508Mirko filling the gap between the pots with sand

The ceramic pots must fit inside one another. Make sure the pots are not glazed or painted, otherwise they won’t work.

Usually the ceramic pots have a small hole in the bottom, if it does they need to be plugged.


Put the smaller pot inside the bigger one, fill the space between the inner and outer pots with fine sand and soak it with water.

Then put the vegetables inside, cover the fridge with the wet fabric and leave it in a sunny spot.

Yes! The temperature inside goes down as the water evaporates.



Nevera Africana

Por Andreia Bastos

Buscando una forma artesanal de enfriar las bebidas, aprendimos como hacer una Nevera Africana.

La Nevera Africana es mas utilizada para matener la temperatura de los vegetales y tambien funciona muy bien con bebidas.

Por suerte no tuvimos que hacer una, Sunseed tenia una Nevera Africana, esperando a que la arreglasemos!

Hazlo tu tambien!

Todo lo que necessitas es:

Dos jarrones de ceramica

Arena del Rio


Una toalla o tela de algodon mojada.


Los jarrones de ceramica deben encajar una dentro de la otra. Asegura te de que los jarrones no estan pintadas o esmaltadas.

Por lo general los jarrones de ceramica tienen un pequeno agujero en la parte inferior, asegurate de taparlo si alguno de los tuyos lo tiene.


Pon el jarron mas pequeno dentro del grande y llena el hueco entre los jarrones con arena y agua.

Y ya esta! Ahora, pon las verduras/bebidas dentro, cubrelo con la toalla o tela mojada y dejala en un lugar soleado. Lo que ocurre es que la temperatura dentro de la Nevera baja encuanto el agua se evapora.