Papers by Muhammad Bukar Maina
Design, Fabrication and Performance Evaluation of Solar Brick Oven
NIPES Journal of Science and Technology Research, 2020
This work presents evaluation of the energy end exergy efficiency of box-type solar cooker with K... more This work presents evaluation of the energy end exergy efficiency of box-type solar cooker with Kapook Insulator (SCK). Thermodynamic considerations required to developed rational and meaningful methodologies for the evaluation and comparison of the efficiency of the SCK was studied. It was found that the average daily water temperature from 10:00 to 12:00 solar time was 85.02 in the SCK. The average daily temperature difference in the SCK was 43.9 0 C. The energy output of the SC K ranged from 0.87 to 40.38W, for the time interval with an average energy output of 23.81Wfor SCK. The exergy output for the SCK ranged from 0.49 to 16.21 W, for the time interval with an average exergy output of 8.52W for SCK. A linear and polynomial regression of the plotted points was used to find the relationships between energy/exergy outputs, and efficiencies and temperature difference. The energy and exergy output at a temperature difference of 50 o C for the SCK was estimated to be 15.25W and 8.8Wduring the experimental period.
International journal of engineering research and technology, 2015
Electricity consumption characteristics of all the buildings in Ramat Polytechnic were investigat... more Electricity consumption characteristics of all the buildings in Ramat Polytechnic were investigated. The consumption patterns showed distinct seasonal variation, indicating peek electrical demands during the hot, humid summer months from March-June due to significant air conditioning requirements. Monthly electricity consumption data were gathered and analyzed. Results show an average annual electricity consumption of 1,445,448 kWh/Annum, and an average energy used index of 217.00 kWh/Student/Annum. The energy end users in Ramat Polytechnic are air conditioning, electrical appliances and lighting in which the energy use is 39.5%, 40.5% and 20%, annually respectively.
NIPES Journal of Science and Technology Research, 2020
This work presents evaluation of the energy end exergy efficiency of box-type solar cooker with K... more This work presents evaluation of the energy end exergy efficiency of box-type solar cooker with Kapook Insulator (SCK). Thermodynamic considerations required to developed rational and meaningful methodologies for the evaluation and comparison of the efficiency of the SCK was studied. It was found that the average daily water temperature from 10:00 to 12:00 solar time was 85.02 in the SCK. The average daily temperature difference in the SCK was 43.9 0 C. The energy output of the SC K ranged from 0.87 to 40.38W, for the time interval with an average energy output of 23.81Wfor SCK. The exergy output for the SCK ranged from 0.49 to 16.21 W, for the time interval with an average exergy output of 8.52W for SCK. A linear and polynomial regression of the plotted points was used to find the relationships between energy/exergy outputs, and efficiencies and temperature difference. The energy and exergy output at a temperature difference of 50 o C for the SCK was estimated to be 15.25W and 8.8Wduring the experimental period.
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Papers by Muhammad Bukar Maina