Chauferette DIY/en

Low-tech with Refugees - Low-tech & Réfugiés

https://wiki.lowtechlab.org/wiki/Chauferette_DIY/en

Dernière modification le 14/08/2024

Difficulté

Easy Facile

Durée

1,5 hour(s) heure(s)

Coût

1 EUR (€)

Description

Hand heater

Sommaire

Chaleur, Cuisine, Chimie

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Matériaux

- 500 ml White vinegar

- 35 Baking soda

-500 ml Boiling water

Outils

-Coffee filter

-Spoon

-Saucepan

-Sachet

-Funnel

-Trombone

Étape 1 -

Put 500mL of vinegar in a container and gently add the bicarbonate of soda (you will see a gas being released as it foams, this is carbon dioxide).

Étape 2 -

Pour this solution into the 500mL of boiling water in the pan and allow the solution to evaporate: you will notice crystals forming at the bottom of the pan.

Étape 3 -

Remove the crystals from the bottom of the saucepan and crush them so that they fit into the container (in this case, the Pompotes flask).

Étape 4 -

Bring the water to the boil and melt the mixture in the flask at a low temperature until the mixture is liquid.

Étape 5 -

Leave the sachet to stand in the open air, avoiding any shocks.

Étape 6 -

Ajouter le trombone et malaxer par la suite le sachet, pour entraîner la cristallisation d'acétate de sodium qui, étant exothermique, va nous fournir de la chaleur !

Étape 7 -

Afin de la réutiliser, répéter l'etape 4 et 5.

en fr 1 Published