Browsing by Author "Serrano Guerrero, Johnny Xavier"

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Assessing the Feasibility of Hydrogen and Electric Buses for Urban Public Transportation using Rooftop Integrated Photovoltaic Energy in Cuenca Ecuador
(2023) Zalamea León, Esteban Felipe; Barragán Escandón, Edgar Antonio; Cevallos Escandón, María Antonia; Julio, Terrados Cepeda; Serrano Guerrero, Johnny Xavier
Barriers to renewable energy expansion: Ecuador as a case study
(2022) Barragán Escandón, Edgar Antonio; Serrano Guerrero, Johnny Xavier; Zalamea León, Esteban Felipe; Romero Fajardo, Israel Efrain; Jara Nieves, Darwin Andrés
The growth in electricity consumption and the resulting pollution suggests the need to incorporate clean energy sources. Currently, technological advancement is affected by a series of barriers that prevent the adoption of wind energy and solar photovoltaic energy. This research identifies the main barriers that affect these two technologies in the Ecuadorian context. A triangulation approach is applied through a literature review and a structured survey of expert professionals. The homogeneity in the responses affirms that the lack of an energy policy, regulations, inadequate financing, fuel subsidies, and investor uncertainty are useful factors that must be taken into account by various stakeholders to search for mitigating mechanisms that make new projects feasible. Although several studies have been conducted to identify barriers in other contexts, the characterization of barriers has been shown to depend on the conditions of the study environment.
Optimal routing for mass transit systems using multicriteria methodologies
(2023) Serrano Guerrero, Johnny Xavier; Martinez Maldonado, Vicente Alexander; Barragán Escandón, Edgar Antonio; Zalamea León, Esteban Felipe
Transportation consumes approximately 29% of the world's energy and is responsible for approximately 25% of CO2 emissions worldwide. In Cuenca, Ecuador, fossil fuels for transportation represent 59.9% of total energy consumption. Ecuadorian legislation has specified gradually replacing traditional public bus transport units with electric units. Because the relevant costs include those associated with replacing equipment and improving route networks, alternatives that prioritize incorporating the first units on the best routes are being sought. This work establishes a methodological process with a set of tools to prioritize the gradual migration from conventional to electric buses according to the characteristics of each route. The Preference Ranking Organization Method for Enrichment of Evaluation (PROMETHEE) multicriteria technique is used to detect the best routes according to technical, social, environmental, economic and location criteria. A final rank of routes is obtained using Visual PROMETHEE software. After the values defining each criterion and its corresponding weight were processed, the final ranking makes it possible to prioritize one route before others. Given 23 lines and 475 bus units, the method enabled us to determine that in an initial phase, 68 electric buses are required to be used on five lines to reduce fuel consumption. The factors that most influence decision making are the number of passengers served, the length of the trip and the energy required by the route
Power Quality Analysis of Photovoltaic Systems
(BOARD, 2023) Barreto Naula, Marlon Arturo; Guananga Guananga, Ariel Oswaldo; Barragán Escandón, Edgar Antonio; Zalamea León, Esteban Felipe; Serrano Guerrero, Johnny Xavier
This research analyses the quality of the electricity produced on photovoltaic systems connected to the power grid in the city of Cuenca (Ecuador). For this, an overview of the literature and the Ecuadorian, American, and European regulations concerning power quality was carried out to determine the regulatory parameters and admissible limits. From the quality records, it is concluded that, in general, there are no power quality problems, except for momentary current balances. In one of the cases, violations of voltage parameters, voltage unbalance, current unbalance and flicker were found. There commended parameters to be included in the Ecuadorian quality standards are individual harmonic distortion and frequency have been registered.
Technical and economic feasibility study of a solar plant on a commercial surface in Azogues, Ecuador
(2021) Serrano Guerrero, Johnny Xavier; Matute Vásquez, Lucas Eduardo; Barragán Escandón, Edgar Antonio; Bermeo Tenesaca, Iván Martín; Zalame León, Esteban Felipe
The submitted paper deals with the shopping mall project that will be supplied with solar power. The selected location was "La Playa Store" shopping center located in the city of Azogues, south of Ecuador. This type of building has at least two characteristics worth studying i) the available surface on the roof, ii) the characteristics of the energy demand curve. This evaluation process establishes the energy requirement of the installation; that is, the energy potential available depending on the surface of its roof, to design a solar plant according to international standards and local ARCONEL 003/18 regulations. The tools used for the involving simulation were the Lumion software, an IFC file created and imported into the Solarius Pv energy simulator, a software specialized in the design of photovoltaic systems. The designed photovoltaic system has a projected annual energy generation of 9,3695.26 kWh; an installed price per watt of $1.1 with viable results at the end of the fifth year of implementation with an IRR of 7.33% and NPV of $390.51. As this is a commercial facility, a constant and flat consumption throughout the day is expected, so implementing solar energy would reduce the actual power requirements by 32.63%.