[01] Ibrahim Ladan Mohammed, Department of Mechanical Engineering, College of Engineering, Kaduna Polytechnic, Kaduna, Nigeria. [02] Musa Bala Ibrahim, Department of Mechanical Engineering, College of Engineering, Kaduna Polytechnic, Kaduna, Nigeria. [03] Hussaini A. Abdulkareem, Department of Mechanical Engineering, College of Engineering, Kaduna Polytechnic, Kaduna, Nigeria.

In this paper the thermal performance of an inclined-box solar cooker is analysed using a method adopted by ASABE: cooking power and standardised cooking power. During thermal load test 1.6 kg of water was heated from ambient temperature of 29°C to the boiling point in 3 hours 45 minutes. The coefficient of determination, r², for standardized cooking power is 0.5064 and the standardized cooking power for temperature difference of 50°C is 23.00W. This figure is shown to be far less than the figures obtained by other researchers in the field; hence, the thermal and optical properties of the cooker must be greatly improved before it can be considered as a very good cooker. Cooking tests of various food items were carried out to complement the water boiling test. The overall cooking performance of the solar cooker is satisfactory, as it is found to be capable of making 2 cycles of cooking in a day, for 3-4 persons per meal, in a total period of just about 6 hours.

Field, Testing, Inclined-Box, Solar, Thermal, Cooker

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