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This paper presents an energy performance assessment on an educational building in Barranquilla, Colombia. The electricity consumption performance was assessed using the software DesignBuilder for two different Air Conditioning (AC) systems. The current electricity intensity is 215.3 kWh/m2-year and centralized AC systems with individual fan coils and a water chiller share 66% of the total consumption and lighting at 16%. The simulation of the AC technology change to Variable Refrigerant Flow (VRF) resulted in an improvement of 38% in AC energy intensity with 88 kWh/m2-year and significant savings in electricity consumption and life-cycle cost of AC systems in buildings.
Milen Balbis-Morejón; Juan Cabello-Eras; Javier Rey-Hernández; Francisco Rey-Martínez. Energy Evaluation and Energy Savings Analysis with the 2 Selection of AC Systems in an Educational Building. Sustainability 2021, 13, 7527 .
AMA StyleMilen Balbis-Morejón, Juan Cabello-Eras, Javier Rey-Hernández, Francisco Rey-Martínez. Energy Evaluation and Energy Savings Analysis with the 2 Selection of AC Systems in an Educational Building. Sustainability. 2021; 13 (14):7527.
Chicago/Turabian StyleMilen Balbis-Morejón; Juan Cabello-Eras; Javier Rey-Hernández; Francisco Rey-Martínez. 2021. "Energy Evaluation and Energy Savings Analysis with the 2 Selection of AC Systems in an Educational Building." Sustainability 13, no. 14: 7527.
The selection of the most suitable HVAC technology for buildings, is a complex challenge. Many factors such as, the features of the building, climatic conditions, energy consumption, Indoor Air Quality (IAQ), thermal comfort, regulations, aspects, economic and environmental aspects, all of which are shown on a local and national scope. There is no standard methodology that guarantees a single criterion for the selection of HVAC systems. Therefore, in its solution, as in almost all decision-making problems in the field of engineering, two different aspects are considered, theoretical and practical (Moreno, 2002) [1], thus forming a typical multi-criteria decision problem. This study proposes an integral performance indicator for the selection of air conditioning systems (ACPI), based on the multicriteria method of the Analytic Hierarchy Process (AHP), in order to choose the best HVAC system variant, based on its classification by integrating energy, environmental, and economic criteria. For the definition of the criteria, studies on HVAC system selection were reviewed and classified, applying multi-criteria on methods. The criteria were weighted based on surveys issued by a team made up of Professors/Researchers, architects, engineers, installers and managers linked to the HVAC sector. The ACPI model obtained, shows that the highest weighting corresponds to building energy consumption index 26.6%, IAQ 20.6%, thermal comfort 18.6%, CO2 emissions 12.1%, and finally, investment costs, operation and maintenance costs 11.6% and 10.3% respectively. The proposed ACPI, together with its analysis methodology, will allow researchers, architects, engineers, and government administration, to consider a wide range of alternative HVAC systems applied in buildings. With this, it will be possible to select them based on a decision-making model with a reliable source of information.
Milen Balbis-Morejón; Juan José Cabello-Eras; Javier M. Rey-Hernández; Francisco Javier Rey-Martínez. Global Air Conditioning Performance Indicator (ACPI) for buildings, in tropical climate. Building and Environment 2021, 203, 108071 .
AMA StyleMilen Balbis-Morejón, Juan José Cabello-Eras, Javier M. Rey-Hernández, Francisco Javier Rey-Martínez. Global Air Conditioning Performance Indicator (ACPI) for buildings, in tropical climate. Building and Environment. 2021; 203 ():108071.
Chicago/Turabian StyleMilen Balbis-Morejón; Juan José Cabello-Eras; Javier M. Rey-Hernández; Francisco Javier Rey-Martínez. 2021. "Global Air Conditioning Performance Indicator (ACPI) for buildings, in tropical climate." Building and Environment 203, no. : 108071.
This study presents the evaluation of the performance and acceptability of thermal comfort by students in the classrooms of a university building with minisplit-type air-conditioning systems, in a tropical climate. To carry out the study, temperature and humidity measurements were recorded, both outside and inside the selected classrooms, while the students were asked to complete thermal surveys on site. The survey model is based on the template proposed by Fanger and it was applied to a total number of 584 students. In each classroom, the Predicted Mean Vote (PMV) and the Predicted Percentage Dissatisfied (PPD) were estimated according to Fanger’s methodology, as well as the Thermal Sensation Vote (TSV) and the Actual Percentage Dissatisfied (APD), which were obtained from the measurements and the surveys. The results of this study showed that the PMV values, although they may vary with the insulation of the clothing, do not affect the TSV. Furthermore, comparing PMV vs. TSV scores, a 2 °C to 3 °C difference in operating temperature was found, whereby the thermal sensitivity for TSV was colder, so it could be assumed that the PMV model overestimates the thermal sensitivity of students in low-temperature conditions. In addition, an acceptability by 90% with thermal preferences between 23 °C and 24 °C were also found. These results indicate that it is possible to increase the temperature set point in minisplit-type air-conditioning system from 4 °C to 7 °C with respect to the currently set temperatures, without affecting the acceptability of the thermal environment to the students in the building.
Milen Balbis-Morejón; Javier Rey-Hernández; Carlos Amaris-Castilla; Eloy Velasco-Gómez; Julio San José-Alonso; Francisco Rey-Martínez. Experimental Study and Analysis of Thermal Comfort in a University Campus Building in Tropical Climate. Sustainability 2020, 12, 8886 .
AMA StyleMilen Balbis-Morejón, Javier Rey-Hernández, Carlos Amaris-Castilla, Eloy Velasco-Gómez, Julio San José-Alonso, Francisco Rey-Martínez. Experimental Study and Analysis of Thermal Comfort in a University Campus Building in Tropical Climate. Sustainability. 2020; 12 (21):8886.
Chicago/Turabian StyleMilen Balbis-Morejón; Javier Rey-Hernández; Carlos Amaris-Castilla; Eloy Velasco-Gómez; Julio San José-Alonso; Francisco Rey-Martínez. 2020. "Experimental Study and Analysis of Thermal Comfort in a University Campus Building in Tropical Climate." Sustainability 12, no. 21: 8886.
The data included in this study was calculated based on data provided by the national project registry provided by the Colombian government. The data forecasts the evolution of the power generation capacity registered in non-conventional renewable energy source projects in three scenarios of implementation of the power generation capacity registered in the projects. Results can be used to benchmark non-conventional renewable energy sources in Colombia, interpret the effectiveness of renewable policies, and monitor the evolution of non-conventional renewable-based power generation. The data presented in the article relates to the research study: A look to the electricity generation from non-conventional renewable energy sources in Colombia [1].
Alexis Sagastume Gutiérrez; Milen Balbis Morejon; Juan José Cabello Eras; Mario Cabello Ulloa; Francisco Javier Rey Martínez; Juan Gabriel Rueda-Bayona. Data supporting the forecast of electricity generation capacity from non-conventional renewable energy sources in Colombia. Data in Brief 2019, 28, 104949 .
AMA StyleAlexis Sagastume Gutiérrez, Milen Balbis Morejon, Juan José Cabello Eras, Mario Cabello Ulloa, Francisco Javier Rey Martínez, Juan Gabriel Rueda-Bayona. Data supporting the forecast of electricity generation capacity from non-conventional renewable energy sources in Colombia. Data in Brief. 2019; 28 ():104949.
Chicago/Turabian StyleAlexis Sagastume Gutiérrez; Milen Balbis Morejon; Juan José Cabello Eras; Mario Cabello Ulloa; Francisco Javier Rey Martínez; Juan Gabriel Rueda-Bayona. 2019. "Data supporting the forecast of electricity generation capacity from non-conventional renewable energy sources in Colombia." Data in Brief 28, no. : 104949.
Accurately forecasting energy consumption in a building is an important strategy for achieving the goal of reducing energy demand and improving energy efficiency. University campuses represent specific groups of diverse buildings with significant energy consumption. Therefore, they provide an excellent testbed to characterize and understand the energy consumption of a group of mixed-use buildings. This paper presents a novel methodology that considers the recommendations of ISO 50001: 2011 and ISO 50006: 2014 for establishing energy baselines and energy performance indicators in higher education institution buildings to identify electrical energy consumption reduction potentials in buildings and establish energy management strategies related to electricity use. The study was implemented in three buildings at the Federal University of Itajubá (José Rodrigues Seabra Campus). Several methods and indicators were evaluated to monitor and measure energy performance in buildings. A wide range of factors that influence operating system energy consumption in the buildings were studied and taken into account, such as the types of activities carried out in the building, weather conditions, building materials, air conditioning system and occupancy, since these contribute directly and indirectly to the difficulty of accurately measuring the building’s energy consumption. The results showed that potential annual savings in electric energy consumption for the campus could be around 9.6%, which translates into a R$ 93,647.2 economic value and a 20.3 tCO2eq emissions reduction without economic investment. It was concluded that the methodology proposed for establishing and monitoring an energy efficiency indicator can be applied to any institute of higher education because it is flexible and adaptable since each institute can define the period of analysis for the indicator. This research is expected to provide theoretical guidance and a practical data reference for relevant evaluations of building energy efficiency.
Eric Alberto Ocampo Batlle; José Carlos Escobar Palacio; Electo Eduardo Silva Lora; Arnaldo Martín Martínez Reyes; Maurish Melian Moreno; Milen Balbis Morejon. A methodology to estimate baseline energy use and quantify savings in electrical energy consumption in higher education institution buildings: Case study, Federal University of Itajubá (UNIFEI). Journal of Cleaner Production 2019, 244, 118551 .
AMA StyleEric Alberto Ocampo Batlle, José Carlos Escobar Palacio, Electo Eduardo Silva Lora, Arnaldo Martín Martínez Reyes, Maurish Melian Moreno, Milen Balbis Morejon. A methodology to estimate baseline energy use and quantify savings in electrical energy consumption in higher education institution buildings: Case study, Federal University of Itajubá (UNIFEI). Journal of Cleaner Production. 2019; 244 ():118551.
Chicago/Turabian StyleEric Alberto Ocampo Batlle; José Carlos Escobar Palacio; Electo Eduardo Silva Lora; Arnaldo Martín Martínez Reyes; Maurish Melian Moreno; Milen Balbis Morejon. 2019. "A methodology to estimate baseline energy use and quantify savings in electrical energy consumption in higher education institution buildings: Case study, Federal University of Itajubá (UNIFEI)." Journal of Cleaner Production 244, no. : 118551.
This study identifies the main factors affecting the electricity efficiency and productivity of the lead acid battery formation process. A representative sample of 12,286 battery formation processes, developed between June 2014 and June 2015, were used in a statistic analysis. As a result, an energy performance indicator was developed to assess the electricity consumption of battery formation. Given that there are several formation circuits in the formation area, an energy performance indicator was developed for each circuit. The influence of the operational practices, operational teams, workings shift starting time and technical condition of the circuits were analyzed. The influence of the operational practices and the technical conditions of the formation circuits were identified as the main factors affecting the productivity and the electricity consumption. These factors cause a time waste, affecting productivity between 2 and 5%, and increasing the electricity consumption. As a result it is recommended to improve maintenance and operational practices towards higher productivity and electricity efficiency.Keywords: Energy efficiency, productivity, training process, lead-acid batteries.JEL Classifications: K32, L94DOI: https://doi.org/10.32479/ijeep.8021
Milen Balbis Morejon; Juan José Cabello Eras; Alexis Sagastume Gutierrez; Vladimir Sousa Santos; Yabiel Perez Gomez; Juan Gabriel Rueda Bayona. FACTORS AFFECTING THE ELECTRICITY CONSUMPTION AND PRODUCTIVITY OF THE LEAD ACID BATTERY FORMATION PROCESS. THE CASE OF A BATTERY PLANT IN COLOMBIA. International Journal of Energy Economics and Policy 2019, 9, 103 -112.
AMA StyleMilen Balbis Morejon, Juan José Cabello Eras, Alexis Sagastume Gutierrez, Vladimir Sousa Santos, Yabiel Perez Gomez, Juan Gabriel Rueda Bayona. FACTORS AFFECTING THE ELECTRICITY CONSUMPTION AND PRODUCTIVITY OF THE LEAD ACID BATTERY FORMATION PROCESS. THE CASE OF A BATTERY PLANT IN COLOMBIA. International Journal of Energy Economics and Policy. 2019; 9 (5):103-112.
Chicago/Turabian StyleMilen Balbis Morejon; Juan José Cabello Eras; Alexis Sagastume Gutierrez; Vladimir Sousa Santos; Yabiel Perez Gomez; Juan Gabriel Rueda Bayona. 2019. "FACTORS AFFECTING THE ELECTRICITY CONSUMPTION AND PRODUCTIVITY OF THE LEAD ACID BATTERY FORMATION PROCESS. THE CASE OF A BATTERY PLANT IN COLOMBIA." International Journal of Energy Economics and Policy 9, no. 5: 103-112.
The aim of this study is to improve energy performance at a battery factory in Colombia by introducing the energy management approach defined in ISO 50001. In the study, the main energy consumptions were identified in the battery formation, the compressed air system and the large electric motors. An energy review was performed in the factory using measurement equipment and statistical techniques. Different actions were proposed to improve energy performance. As a result, a 3.48% reduction in electricity consumption was achieved during the implementation of the proposed measures.
Eliana Noriega Angarita; Juan José Cabello Eras; Hernan Hernández Herrera; Vladimir Sousa Santos; Milen Balbis Morejón; Jorge Ivan Silva Ortega; Alexis Sagastume Gutiérrez. Energy planning and management during battery manufacturing. Gestão & Produção 2019, 26, 1 .
AMA StyleEliana Noriega Angarita, Juan José Cabello Eras, Hernan Hernández Herrera, Vladimir Sousa Santos, Milen Balbis Morejón, Jorge Ivan Silva Ortega, Alexis Sagastume Gutiérrez. Energy planning and management during battery manufacturing. Gestão & Produção. 2019; 26 (4):1.
Chicago/Turabian StyleEliana Noriega Angarita; Juan José Cabello Eras; Hernan Hernández Herrera; Vladimir Sousa Santos; Milen Balbis Morejón; Jorge Ivan Silva Ortega; Alexis Sagastume Gutiérrez. 2019. "Energy planning and management during battery manufacturing." Gestão & Produção 26, no. 4: 1.
This paper discusses energy management in the formation process of lead-acid batteries. Battery production and electricity consumption in during battery formation in a battery plant were analyzed over a 4-year period. The main parameters affecting the energy performance of battery production were identified and different actions to improve it were proposed. Furthermore, an Energy Performance Indicator (EnPI), based on the electricity consumption of battery formation (a difficult and rather expensive parameter to measure), is introduced to assess its energy efficiency. Therefore, a Soft Sensor to measure the electricity consumption in real-time (based on the voltage and current measured during battery formation) and to calculate the EnPI is developed. Moreover, Energy Management (EM), aided by the use of energy baselines and control charts is implemented to assess the energy performance of battery formation, allowing the implementation of rapid corrective actions towards higher efficiency standards. This resulted on the average in a 4.3% reduction of the electricity consumption in battery formation.
Juan J. Cabello Eras; Alexis Sagastume Gutiérrez; Vladimir Sousa Santos; Hernan Hernández Herrera; Milen Balbis Morejon; Jorge Silva Ortega; Eliana Maria Noriega Angarita; Carlo Vandecasteele. Energy management in the formation of light, starter, and ignition lead-acid batteries. Energy Efficiency 2018, 12, 1219 -1236.
AMA StyleJuan J. Cabello Eras, Alexis Sagastume Gutiérrez, Vladimir Sousa Santos, Hernan Hernández Herrera, Milen Balbis Morejon, Jorge Silva Ortega, Eliana Maria Noriega Angarita, Carlo Vandecasteele. Energy management in the formation of light, starter, and ignition lead-acid batteries. Energy Efficiency. 2018; 12 (5):1219-1236.
Chicago/Turabian StyleJuan J. Cabello Eras; Alexis Sagastume Gutiérrez; Vladimir Sousa Santos; Hernan Hernández Herrera; Milen Balbis Morejon; Jorge Silva Ortega; Eliana Maria Noriega Angarita; Carlo Vandecasteele. 2018. "Energy management in the formation of light, starter, and ignition lead-acid batteries." Energy Efficiency 12, no. 5: 1219-1236.
En este estudio que se presenta se integran técnicas utilizadas para analizar problemas asociados a la climatización que por sí no son suficientes para evaluar todo un sistema de acondicionamiento de aire. Se utiliza la termografía para obtener el perfil de temperatura en el área de incidencia del aire climatizado y los focos calientes en el interior del local. Mediante la simulación con el software Trnsys se obtiene el comportamiento de la temperatura interior y se estima el perfil de carga térmica. Con el diseño asistido por computador se crea un modelo espacial de la zona térmica y con el método de los elementos finitos se modela la circulación del aire y la distribución de la temperatura en el espacio. Finalmente, se propone un nuevo esquema para el sistema de frío a partir de los resultados obtenidos con las herramientas anteriores.
José A. Madrigal; Juan J. Cabello; Alexis Sagastume; Milen Balbis. Evaluación de la Climatización en Locales Comerciales, Integrando Técnicas de Termografía, Simulación y Modelado por Elementos Finitos. Información tecnológica 2018, 29, 179 -188.
AMA StyleJosé A. Madrigal, Juan J. Cabello, Alexis Sagastume, Milen Balbis. Evaluación de la Climatización en Locales Comerciales, Integrando Técnicas de Termografía, Simulación y Modelado por Elementos Finitos. Información tecnológica. 2018; 29 (4):179-188.
Chicago/Turabian StyleJosé A. Madrigal; Juan J. Cabello; Alexis Sagastume; Milen Balbis. 2018. "Evaluación de la Climatización en Locales Comerciales, Integrando Técnicas de Termografía, Simulación y Modelado por Elementos Finitos." Información tecnológica 29, no. 4: 179-188.
En el presente trabajo se diseña y aplica un procedimiento de planificación energética, compatible con la norma ISO 50001, a una lavandería industrial. Se analizan tres variables de entrada: nivel de producción, estado técnico del sistema y régimen de operación. Se examina el pasado, presente y futuro del consumo del fuel oíl en el sistema de generación y uso del vapor, estableciendo las causas del deterioro del indicador de consumo. A través de un estudio de carga y capacidad en el sistema se identificaron las potencialidades de ahorro mejorando el esquema de operación. Se propuso un nuevo esquema para la operación de las calderas el cual fue implementado lográndose un ahorro del 16% de combustible. Con los resultados de las mediciones se elabora la línea base y se establecen nuevas metas.
José A. Madrigal; Juan J. Cabello Eras; Hernán Hernández Herrera; Vladimir Sousa Santos; Milén Balbis Morejón. Planificación energética para el ahorro de fueloil en una lavandería industrial. Ingeniare. Revista chilena de ingeniería 2018, 26, 86 -96.
AMA StyleJosé A. Madrigal, Juan J. Cabello Eras, Hernán Hernández Herrera, Vladimir Sousa Santos, Milén Balbis Morejón. Planificación energética para el ahorro de fueloil en una lavandería industrial. Ingeniare. Revista chilena de ingeniería. 2018; 26 (1):86-96.
Chicago/Turabian StyleJosé A. Madrigal; Juan J. Cabello Eras; Hernán Hernández Herrera; Vladimir Sousa Santos; Milén Balbis Morejón. 2018. "Planificación energética para el ahorro de fueloil en una lavandería industrial." Ingeniare. Revista chilena de ingeniería 26, no. 1: 86-96.
Hernán Hernández Herrera; Juan José Cabello Eras; Rafael Goytisolo Espinosa; Milen Balbis Morejón. Tensiones en uniones soldadas a tope con perfiles abiertos bajo torsión. Ingeniare. Revista chilena de ingeniería 2015, 23, 638 -646.
AMA StyleHernán Hernández Herrera, Juan José Cabello Eras, Rafael Goytisolo Espinosa, Milen Balbis Morejón. Tensiones en uniones soldadas a tope con perfiles abiertos bajo torsión. Ingeniare. Revista chilena de ingeniería. 2015; 23 (4):638-646.
Chicago/Turabian StyleHernán Hernández Herrera; Juan José Cabello Eras; Rafael Goytisolo Espinosa; Milen Balbis Morejón. 2015. "Tensiones en uniones soldadas a tope con perfiles abiertos bajo torsión." Ingeniare. Revista chilena de ingeniería 23, no. 4: 638-646.