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The Lorena Stove

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Removes smoke from hut through chimney. Constructed of inexpensive raw materials ... Pipe for chimney. Cooking on an open fire in a hut. The Lorena Stove. 3 ... – PowerPoint PPT presentation

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Title: The Lorena Stove


1
The Lorena Stove
Saving the World One Person at a Time
2
What Is a Lorena Stove?
  • Replaces open fires in hut
  • Removes smoke from hut through chimney
  • Constructed of inexpensive raw materials
  • Adobe (mud, straw, water)
  • Large plastic bucket
  • Empty coffee or soup can
  • Pipe for chimney

Cooking on an open fire in a hut
3
Effect of Lorena Stoves on Infant Mortality
Note drop after 2003 when Lorena Stoves were
installed
Cases of respiratory disease not available
4
Why Use Lorena Stoves?
  • Decrease incidence of common diseases from smoke
    inhalation
  • Respiratory infections
  • Eye infections
  • Asthma
  • Increase fuel efficiency
  • Save trees in and around village
  • Save work cutting and gathering wood

Peruvian boy who has suffered from respiratory
infections
5
How Do They Work?
  • Wood or grass placed in fuel chamber
  • Fuel ignited
  • Pot or pan placed on opening on top
  • Cool air enters through fuel chamber
  • Smoke exits through chimney

Chimney pipe
Pipe exits roof
Opening for pot or pan
Adobe Stove
Fuel chamber
6
Selecting the Location
Chimney
Opening for pan
  • Build Lorena stove in corner of hut farthest from
    front door
  • Choose wall so that fuel chamber is on right or
    left, depending on handedness of cook

Lorena stove
Door
Walls of hut
7
Constructing the Stove Making Adobe
  • Select mud with a moderate amount of clay
  • ? Excessive clay causes stove to crack when
    heated
  • ? Insufficient clay causes stove to collapse
  • Mix with water
  • Add straw

Mixing mud and water
Mixing in straw
8
Constructing the Stove Preparing the Frame
Fuel chamber
  • Place large plastic bucket near side of wooden
    form to be fuel chamber
  • Place empty coffee can near other side of form to
    be heat chamber
  • Place chimney pipe midway between other items

Chimney pipe
Heat chamber
Wooden form
9
Constructing the Stove Filling Frame with Adobe
  • Join 3 chambers with pipes or small cans
  • Add adobe around buckets, cans, and pipes
  • Prop sides of form to prevent collapse
  • Allow 48 to 72 hours to dry

Adding adobe to frame
10
Constructing the Stove Adding a Finish
  • After adobe dries, remove wooden frame
  • Remove plastic bucket (other cans and pipes stay
    in stove)
  • Apply wet adobe to outer surface rub until smooth

Photo of completed stove in womans hut
11
Final Notes
  • Work under direction of villagers
  • Train villagers to build stoves
  • Train villagers to cook on stove
  • Villagers like stoves for their fuel economy
  • Lorena stoves save lives
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