🛠️ Invention or technique

Lorena mud-and-sand stove

Cocina de barro y arena Lorena

Date
1976-1977 · confidence medium
Place
Guatemala City, Guatemala
Credited to
ICAITI, Aprovecho (Ian Evans) and rural communities in Guatemala
Field
Matter & energy

⚠️ Disputed: the sources disagree.

What it is

A mud-and-sand stove with a chimney and an insulated combustion chamber that costs a few dollars and uses far less wood than an open fire. It spread across Latin America, Africa and Asia.

The design is due to Ianto Evans and the ICAITI team around 1976 based on earlier stoves; the exact origin is hazy.

What it led to

  • improved cookstove programmes
  • less deforestation and indoor smoke
  • designs such as the Plancha and the rocket stove
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