Summary

Fig 1: Metal insert rocket box style combustion chamber of the traditional Justa Stove.

The Modified Justa Stove is a version of the Justa stove. This particular version is being disseminated by Foro Para el Desarollo Sostentable Stove Dissemination Program located in San Cristobal de las Casas Chiapas. The Foro stove team refers to this stove as the Justa Mejorada which in Spanish means the "Improved Justa." This page is titled "Modified Justa" because calling this stove an "Improved Justa" may be misleading. The main modification that characterizes this Modified Justa from the original Justa is in the design of the combustion chamber. The combustion chamber of the Justa has a metal insert with the classical rocket box shape that has been proven in laboratories to have a high efficiency of transferring energy from the biomass fuel to the cooking surface. In comparison to this the Modified Justa has a larger combustion chamber that is built with bricks. There is no metal insert.

Fig 2: Example of the Modified Justa Stove combustion chamber. Note the bricks in the back that act as baffles to funnel the hot gases towards the cooking surface and exit.

Examples of Modified Justa Stoves in and around San Cristobal de las Casas

Location

Found in Chiapas State of southern Mexico

Organizations using this stove

Foro Para el Desarollo Sostentable Stove Dissemination Program

Building specifications

Materials

Material Dimensions Quantity
row 1, cell 1 row 1, cell 2 row 1, cell 3
row 2, cell 1 row 2, cell 2 row 2, cell 3

Step by step

More photos courtesy of Foro Para el Desarollo Sostentable Stove Dissemination Program

Cookies help us deliver our services. By using our services, you agree to our use of cookies.