This work develops a mini dual powered oven which is mainly made up of the electric coil, the lagging material, temperature control and the gas burner. It has an internal volume of 0.140msup3/sup, with a double tray for baking and drying of food items and outside surface area of 0.142 msup2/sup. The oven was constructed in such a way that the electric coil heater and the gas burner are in one chamber. Using the electrical coil heater and a temperature regulator, the maximum temperature of 220?C was recorded. The oven was insulated with a material (slag wool) that has a thermal conductivity of 0.042 w/msupo/supC. The oven can bake maximum of 12 loaves of bread (area of 0.022 msup2/supper loaf) and it was constructed with locally available materials.
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机译：这项工作开发了一个微型双动力烤箱，该烤箱主要由电线圈，滞后材料，温度控制装置和燃气燃烧器组成。内部容积为0.140m 3 ，带有用于烘烤和干燥食品的双托盘，外部表面积为0.142m 2 。烤箱的构造应使线圈加热器和气体燃烧器位于一个室内。使用线圈加热器和温度调节器，记录的最高温度为220℃。烤箱用导热系数为0.042 w / m o C的材料（矿渣棉）隔热。该烤箱最多可烤12条面包（每条面包的面积为0.022 m 2 ），并使用当地可用的材料制成。
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