Design

Design

Procedure followed to design and construct the cooking Stove Thermal design assumption of the cooking stove

The Thermal and Assumption Table

• Test the performance of designs based on the experience of Zimbabwe residents who cook inside of their dwellings without proper ventilation and suffer from IAP.
• One square meter of discarded sheet metal 1mm thick was used to create several different units.
• The metal sheet was marked using some chalk to create fold lines and cut lines.
• The marked shapes were cut using sheet metal snips. The shapes were joining by folding the edges of the two-dimensional shapes to form threedimensional shapes.

Design of Combustion Chamber

The combustion chamber is designed in a rectangular prism shape. In the combustion chamber fuel (wood pieces) are combusted. It was observed that inner chamber became red hot. To reduce the heat losses from inner chamber, a jacket of coarse sand and heat resistance refractory material was added (Fire Clay). As shown in the figure to the right.

Stove “Cooker” to burn fuel more efficiently and reduce emitted smoke. Chimney and hood, to eliminate fumes from dwelling. The chimney is isolated from the roof by a 2nd outer pipe. Nails are used to isolate the chimney pipe from the insulating pipe and the roof.