DEVELOPMENT OF DUAL POWER HEAT TREATMENT FURNAC
Abstract
This research is centered on the development of dual-power heat treatment
furnace using locally sourced materials. The development philosophy is to have a
dual power source, that is electricity and fuel(Charcoal) due to irregular electrical
power supply to energize the furnace. Design drawings were produced and 47 ×
47mm square pipe iron, 1.2mm metal sheet was used for the fabrication of the
furnace casing. The furnace was assembled by lining the lagging made from the
mixture of sand, cement, gravel and water, where the electric element was placed
and assemble together, and electrical components (circuit breaker, switch, light
indicator) were positioned. Testing was performed to evaluate the performance
of the furnace. It was observed that the furnace has a fast heating rate as the
result of airflow from the blower to the charcoal brazier. It was also observed the
electric heating element has a minimum temperature of 260°C within 12 minutes
if the composite power source is 220V-240V. It was also observed that the
furnace has good heat retaining capacity
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