Design Analysis and Development of a Drip-Fed Waste Oil Stove for Domestic Cooking

This study presents the design, construction, and performance evaluation of a drip-fed waste oil stove aimed at providing a low-cost, energy-efficient heating solution using readily available waste oil. Thus, addressing the environmental and economic concerns of fossil fuel dependency, the stove operates without electricity, utilizing gravity-fed oil flow and natural airflow combustion. Key design features include an adjustable drip system, primary and secondary air inlets, and an isometric metal structure enabling efficient combustion. Experimental results show that the stove consistently delivers thermal outputs between 4.2–6.7 kW, with optimal performance at a burn rate of 0.6 kg/h and peak thermal efficiency approaching 70%. The stove demonstrates stable, smoke-minimized combustion under appropriate air and fuel regulation. While effective in small-scale, off-grid heating applications, challenges such as fuel quality sensitivity and carbon buildup highlight the need for further refinements. Recommendations for safety enhancements and system scalability are proposed to improve usability and broaden applicability.