Solar Energy

This study focuses on the design, fabrication, and performance evaluation of a solar thermal dryer developed using locally available materials to enhance the drying of agricultural products in both rural and urban environments. Traditional open-air drying methods commonly practiced in Nigeria are fraught with challenges such as contamination, theft, unfavorable weather, and inconsistent drying rates, leading to significant post-harvest losses. To mitigate these limitations, a solarpowered thermal drying system was developed to harness the abundant solar energy available in tropical regions. The research methodology involved a comprehensive review of literature on solar energy utilization, the development of suitable design concepts, determination of relevant design and environmental parameters, material selection, fabrication, and experimental testing. The solar dryer design integrates a photovoltaic-powered air blower and a thermally heated chamber, providing controlled airflow and consistent heat distribution for effective moisture removal. Findings from related studies and prototype evaluations revealed that solar thermal dryers offer improved drying efficiency, reduced drying time, and enhanced product quality compared to conventional methods. The project demonstrates the potential for affordable, energy-efficient, and environmentally sustainable drying technology adaptable for small-scale farmers and households. Furthermore, the design can be scaled up for commercial use, promoting local manufacturing, job creation, and the wider adoption of renewable energy technologies in Nigeria. Keywords: Solar energy, solar thermal dryer, agricultural drying, photovoltaic blower, renewable energy, moisture removal

This study investigates the possibility of using solar energy as an alternative to the University of Benin's unstable electrical supply from the Benin Distribution Company (BEDC). Using a descriptive survey approach, data was collected from 100 students using a standardized questionnaire and analyzed using mean and standard deviation. The findings show that an irregular power supply disturbs academic activity, but solar energy provides economic and environmental benefits. However, obstacles such as funding and policy constraints exist. The analysis suggests supportive policies, financial incentives, and investments to encourage using solar energy on campuses

In this paper, a wireless power transmission (WPT) using resonant magnetic coupling for mobile phone charger is presented. Solar energy was used as the energy source to address the scarcity of non-renewable energy sources and tackles the constraints of wired charging technology such as lack of universal electrical standard, untidiness and inconvenience of wires and wires' wear and tear. The system includes PV panels and battery, oscillator, transmitting coil and receiving coil and rectifier. Proteus 8.1 was used to simulate before implementing in the hardware. The resonant magnetic coupling resonated at 800 kHz ± 10 kHz. The maximum distance to charge a mobile phone was 4 cm at 3.7 V. All the objectives are achieved within the limited time frame. The significance of the project can help to eradicate the use of wires and the need of power plugs. The
future research includes the study of efficiency, coil design, system with multiple loads.