Research Article
Sizing and Simulation of a Photovoltaic Hybrid Energy System and Generator for the Electricity Supply of the Residence of the Governor of Mamou, Guinea
Ansoumane Sakouvogui*,
Nene Aissata Balde,
Yacouba Camara,
Saidou Barry,
Elhadj Ousmane Camara,
Thierno Amadou Barry
Issue:
Volume 13, Issue 1, April 2024
Pages:
1-7
Received:
20 December 2023
Accepted:
2 January 2024
Published:
18 January 2024
Abstract: The optimization sizing model of hybrid renewable energy systems is a model that applies to micro-energy and makes it possible to simplify the design and implementation of electrical energy projects in isolated areas of large distribution networks and can be interconnected. The objective of this work is the optimal sizing and simulation on HOMER (Hybrid Optimization Model for Electrical Renewable) software of a hybrid photovoltaic system and generator for the electricity supply of the residence of the governor of Mamou. The methodology followed to estimate the electrical loads of the residence, categorizing them in two ways (low consumers and high energy consumers). The field survey made it possible to know the average temperatures and average irradiations of the site. The dimensioning of the photovoltaic field was initially carried out using analytical formulas. The characteristics of the field elements were also determined. The choice of group was made on the basis of the total load of the residence. Finally, the HOMER software made it possible to carry out optimal sizing and simulation of certain parameters. The main results obtained relate to: the meteorological characteristics of the site (temperature and irradiation). The temperature varies from 23.10°C to 30.30°C with an average of 25.86°C. Irradiation varies from 4.68 kWh/m²d to 6.76 kWh/m²d from August to April with an average of 5.54 kWh/m2d. The elements of the hybrid system are: 20 panels of 260 Wp, for an installed power of 5200 Wp; 8220 Ah batteries, for an installed capacity of 1760 Ah; two (2) converters (Sunny boy and Sunny island) with a power of 84 kW each and a 10 kVA generator. The annual production of electrical energy of the entire hybrid system is thus 39.393 kWh. Including 18.113 kWh for the generator, i.e. 46%, and 21.28 kWh for the photovoltaic system, 54%. The investment cost of the system is estimated at 192420600 FG. The results obtained show that the use of renewable energy sources such as solar coupled with thermal remains the best optimal solution for providing electrical energy to isolated areas.
Abstract: The optimization sizing model of hybrid renewable energy systems is a model that applies to micro-energy and makes it possible to simplify the design and implementation of electrical energy projects in isolated areas of large distribution networks and can be interconnected. The objective of this work is the optimal sizing and simulation on HOMER (H...
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Research Article
Evaluation of Building Energy Use in South Western Nigeria
Christopher Kolade Alegbeleye*,
Janet Mayowa Nwaogu,
Awotunde Ifeoluwa,
Tobi Adelerin,
Adetooto Johnson Damilola
Issue:
Volume 13, Issue 1, April 2024
Pages:
8-18
Received:
2 November 2023
Accepted:
13 December 2023
Published:
18 January 2024
Abstract: The study investigated the energy needs of buildings in South Western Nigeria; examined factors influencing energy loss in buildings and examined the factors influencing implementation of energy saving opportunities in South Western Nigeria with a view to providing information that will enhance economic (cost) and environmental sustainability. The study made use of primary data collected by carrying out building energy audits on 40 buildings that utilize the heating, ventilation and air conditioning (HVAC) system in the study area selected through a purposive sampling technique and administration of questionnaires to the building users. Data collected included energy needs in buildings, building user’s needs for thermal comfort, air leaks in building envelopes and the envelope characteristics, and user's agreement on energy saving measures. The data were analyzed using frequency, percentage, mode, mean score and heat transmission formular. The results on energy needs revealed that space cooling accounts for the highest (100%) energy need than space heating (10%) in South Western Nigeria. Results on energy loss revealed that inadequate envelope from air leaks with external windows having the highest percent (72.5%) of air leaks, and (67.5%) unawareness of building users are factors influencing energy loss in buildings. The results on energy saving opportunities revealed that efficient building insulation is a vital measure (MS= 3.8) to save energy in buildings in South Western Nigeria and it is influenced by financial capability of building users (MS= 3.7). The study concluded that efficient building insulation is a vital measure to enhance energy savings in buildings and it is greatly influenced by the financial capability of the building users.
Abstract: The study investigated the energy needs of buildings in South Western Nigeria; examined factors influencing energy loss in buildings and examined the factors influencing implementation of energy saving opportunities in South Western Nigeria with a view to providing information that will enhance economic (cost) and environmental sustainability. The ...
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