Bachelor of Science in Electrical Engineering

Designing, constructing, and testing of solar-powered rice pest light trap at Abilay Norte, Oton, Iloilo

Thu, 01 Jun 2023 00:00:00 GMT

Designing, constructing, and testing of solar-powered rice pest light trap at Abilay Norte, Oton, Iloilo Bajon, Christian; Consorte, Lorence Anthony; David, Lissele May; Pamotillo, Xavier; Valencia, Anthony Iloilo has an abundance of production of rice each year. It ranked third in rice output in 2011 with 959,270 metric tons in Western Visayas (Bureau of Agricultural Statistics). In prior years of engaging in this type of agricultural activity, farmers frequently experienced pest problems. The development of a solar-powered rice pest light trap can aid in the elimination of these pests. This study aims to design, construct and test a solar-powered rice pests light trap at Abilay Norte, Oton, Iloilo. Two systems were designed: the passive and active systems. A 25 Wp solar panel and 26 Ah battery were used to provide enough power for a 6 Watt UV LED for passive and a 6-Watt UV Electric Mosquito Killer Light for active. A photoresistor sensor was used to control the lighting fixtures automatically. The results showed that the passive system has more trapped rice pests than the active system and the overall efficiency of utilizing solar-powered light trap was 59.62%. The trapped pests were similar to the pests counted during the quadrant method. Overall, the device designed, constructed, and tested was effective in trapping rice insect pests in the field. It can help farmers to manage insect pests on their crops and lessen the use of pesticides that are not healthy and can contaminate crops, soil, and water, which may eventually cause health problems for consumers. Abstract only

Solar-powered crab fattening farm with a recirculating aquaculture system (RAS) for mud crab (Scylla olivacea)

Thu, 01 May 2025 00:00:00 GMT

Solar-powered crab fattening farm with a recirculating aquaculture system (RAS) for mud crab (Scylla olivacea) Agilles, Kyla Deana D.; Bondoc, Brix B.; Gula, Gerald Jay N.; Masangya, Renan P.; Rendaje, Rheniel C. Due to its significant commercial worth and the trend of diversifying seafood output beyond fish and shrimp, the mangrove crab Scylla olivacea has become a prime target for intensive aquaculture. Mud crabs suffer from oxidative stress and lipid peroxidation due to their immunological and physiological reactions to air exposure. To address this challenge, a Solar-Powered Crab Fattening Farm with a Recirculating Aquaculture System (RAS) for Mud Crab (S. olivacea) was developed, addressing the challenges of traditional crab farming, including fat loss and environmental stress. This study aimed to design, assemble, and evaluate at Miag-ao, Iloilo. The System included the RAS frame, monitoring and control system, aeration system, and the solar-powered system. Powering the system required a 500 W Solar Panel and 50 Ah battery. Throughout the testing period, optimal water quality parameters of salinity (15 ppt to 20 ppt), pH (7.5 to 8.5), and temperature (22°C to 28°C) were monitored and controlled. After 5 days, comparisons revealed the difference in the growth, survival, and health rates of the crabs after being kept in a controlled environment in the system. Abstract only

Impact study on the additional air conditioning load at Central Philippine University

Tue, 01 Apr 2025 00:00:00 GMT

Impact study on the additional air conditioning load at Central Philippine University Biongan, Shan Michael B.; Davila, Kyle Christian V.; Dayot, Patricia P.; Jamora, Sean Gabriel L.; Soltis, Stroll S. This study examines how an added load on the electrical infrastructure of Central Philippine University (CPU) affects the system’s capability to carry increased energy requirements. The research targets the evaluation of existing transformer banks and energy consumption patterns to find if the current infrastructure is sufficient to support added cooling systems without causing power overloads or voltage instability. The data collection was done by measuring load, transformer capacity and energy consumption with a data logger and a systematic measurement technique. The baseline energy consumption of university buildings was also studied, energy requirements of new air conditioning units were estimated, and the total energy consumption was projected including the new load. The key findings indicate that the electrical system of the CPU may need improvement in the transformer capacity, power factor correction and load distribution for system reliability and efficiency. The results presented in this research can be used to help the university administration, facilities management, and future researchers find ways of developing sustainable energy solutions and infrastructure improvements in academic institutions. Abstract only

Design, installation and field testing of a solar PV system for a greenhouse in Aganan, Pavia, Iloilo

Tue, 01 Apr 2025 00:00:00 GMT

Design, installation and field testing of a solar PV system for a greenhouse in Aganan, Pavia, Iloilo Revestir, Vynz Keall B.; Artiaga, Michael Andrei P.; Constantino, John Joshua C.; Cabrestante, Dan Christian V.; Datiles, Neil Jaercyn N. This study aimed to design, install and field test a Solar PV System for a Greenhouse in Aganan, Pavia, Iloilo. The system comprises two 500-Watt solar panels linked in series, generating a total output of 1000 kW to power the setup. A 1.8 kW Hybrid Inverter facilitates smooth switching between grid and solar power sources. Additionally, a 12V 200Ah battery stores surplus energy during sunny periods. This study also aims to test the reliability and functionality of the solar-powered system under sunny and cloudy conditions. The results from the reliability test finds that the state of charge of the battery maintained a full charge of 100% from 6 a.m. to 6 p.m. During sunny weather the peak generation is reaching 690 W, while in cloudy weather the peak generation is reaching 874 W. The results from the functionality test guarantees that the system is reliable and continuously providing electricity from 9 a.m. to 4 p.m. Moreover, the electricity generated by the solar panels meets the energy demand of the greenhouse. An economic analysis was also conducted, comparing the greenhouse's average annual electricity bill and kilowatt-hour consumption over the year. Data was gathered from the previous six months' bills to calculate the net return on investment which yielded a return of 109.02%. Furthermore, the payback period was determined to be 0.917 year or 335 days indicating when the return on investment was achieved. Abstract only