DESTACADOS
- Libro del INENCO
Instituto de Investigaciones en Energía No Convencional. Ciencia y Tecnología para un futuro sustentable 1980 – 2015. Autores: Silvina Belmonte, Ricardo Caso, Beatriz Balderrama, Silvana Flores Larsen.
- Proyecto de Ley sobre energías renovables para la provincia de Salta
Proyecto de Ley sobre energías renovables para la provincia de Salta. IX Jornadas de Ciencia y Tecnología de Facultades de Ingeniería del NOA, CODINOA 2013,Universidad Nacional de Santiago del Estero, 3 y 4 de Octubre de 2013. ISSN N° 1853-7871. Autores: TILCA F., FLORES LARSEN S. 2013.
- Análisis del ciclo de vida de una vivienda auditada en condiciones reales de uso en la región central de Argentina
Energías Renovables y Medio Ambiente 35, pp. 7-19. ISSN 0328-932X, Argentina 2015.
Autores: Filippín C., Sipowicz E., Flores Larsen S.
Resumen
El objetivo general de este trabajo es: estimar la energía contenida y operativa de una vivienda compacta construida en el año 1975 y localizada en la ciudad de Santa Rosa, La Pampa (latitud: 36.6º, longitud 64.3º y altura sobre el nivel del mar: 189m) en un clima templado frío de la región central de Argentina. Se analizó el consumo de energía total de la vivienda (gas natural y energía eléctrica) entre 1989 y 2009. Para completar la información de la energía operativa del período 1976-1989 se usó una ecuación de regresión lineal simple. En este trabajo los resultados muestran la participación de la energía contenida (inducida, gris e incorporada) y la operativa para satisfacer las necesidades básicas del usuario para un período de 34 años. El mejoramiento energético de la envolvente vertical para satisfacer la recomendación de la Norma IRAM pertinente a invierno significaría aumentar un 5% (de 12 a 17%) la energía contenida en los componentes tecnológicos más significativos de la vivienda. Ese incremento permite reducir un 28% el consumo de energía en calefacción pasando de 234 a 168 kWh/m2 (120 kWh/m2 para un edificio de bajo consumo) a pesar de que la envolvente vertical para las condiciones térmicas del aire interior estudiadas no satisface la certificación de etiquetado energético. En acuerdo con el ahorro de energía habría una reducción de las emisiones de CO2.
Palabras Claves
Análisis de Ciclo de Vida – Energía contenida – Energía operativa – Ahorro de energía
- Modeling double skin green façades with traditional thermal simulation software
Solar Energy 121, pp. 56-67, Ed. Elsevier. Noviembre 2015.
Autores: Flores Larsen S., Filippín C.Lesino G.
Highlights
- A simplified method to simulate the thermal behavior of green walls is presented.
- The model can be used in software not providing a specific green wall module.
- The thermal behavior of the vegetation is explained.
- An application example with EnergyPlus is described.
Abstract
The use of plants attached to the building walls is a bioclimatic strategy that has grown in popularity due to the savings in building energy consumption. The plant is a living component of the façade that responds to the environment in a very complicated way, by regulating their transpiration levels. The simulation of this response is generally not included in the available software for transient thermal simulation of buildings, thus making difficult the simulation of green walls by architects and building designers. The aim of this paper is to present a simplified method to simulate a green wall using a traditional wall/glazing element, with fictitious properties, whose thermal model is included in transient simulation softwares. Thus, green walls can be simulated with softwares that do not provide specific modules for plant calculation. The model is more accurate under humid conditions and for low wind speeds. An application example is presented, consisting of a building prototype with a green façade that was simulated through EnergyPlus software. Inside and outside glass temperatures, plant foliage temperature, and window heat gain and losses were calculated. The results were discussed and recommendations for simulating green façades were done.
- Double skin glazed facades in sunny Mediterranean climates
Energy and Buildings 102, pp. 18-31, Ed. Elsevier. Mayo 2015.
Autores: FLORES LARSEN S., RENGIFO L., FILIPPIN C.
Highlights
- An unoccupied office building with West double gazed façade was monitored in summer.
- The temperature in the cavity exceeded in 10 °C the outdoor air at the sunset.
- Despite the high outdoor air temperatures, indoor ones do not exceeded the outdoor levels.
- Air speed in the cavity was 3.2 times lower than wind speed.
- Well-designed double glazed façades can reduce the cooling energy consumption.
Abstract
Double skin glazed facades (DGF) are an actual worldwide trend in new and refurbished buildings, even in warm climates with high solar radiation levels as in the Middle East and in Mediterranean climates. In such climates, overheating of indoor spaces and therefore excessive energy consumption are the main problems to be faced. These issues are commonly addressed mostly by thermal simulation or experimental evaluations on small prototypes. However, measurements on real-scale buildings with DGFs are very unusual. This information is crucial to understand and validate the predictions of the thermal behavior of the DGF technology. In this paper, thermal measurements were carried out in an unoccupied office building with a West DGF placed in the Northwest region of Argentina during 3 months in spring/summer. The air temperature exceeded in 10 °C the outdoor air and that indoor temperatures have not exceeded the outdoor levels in the hottest hours. Two correct design decisions were the use of low-e double hermetic glazing and the addition of a screenpainting to the external DGF panel. The experimental data showed that well-designed DGFs can reduce the summer energy consumption of buildings, even using West DGFs, in sunny climates.
Keywords
- Double skin façade;
- Glazed façade;
- Ventilated façade;
- Energy efficiency;
- Office building
- Experimental monitoring and post-occupancy evaluation of a non-domestic solar building in the central region of Argentina
Energy and Buildings 92, pp. 267-281, Ed. Elsevier. 2015.
Autores: Filippín C., Flores Larsen S., Marek L.
Highlights
- The technology and solar building design were appropriate for a semi-arid region of Argentina.
- The heating annual energy consumption was 73.5 kW h/m2.
- Cooling energy consumption corresponds to about 80% of the total daily consumption.
- The values of PMV and PPD during the summer satisfy ISO 7730.
- During winter, spring and autumn the PMV value approaches the neutral and slightly cool.
Abstract
Previous experience in designing and monitoring bioclimatic buildings in central Argentina suggests that their thermal behavior is a matter of concern and that further research is needed. Thus, the objectives of this work are: to describe the design and the post-occupancy evaluation of a new non-domestic solar building in a continental semiarid region of central Argentina (37°38′ latitude S, 63°34′ longitude, 175 m above sea level), to analyze the building’s hygrothermal and energy performance, and to estimate the PMV and PPD. The design guidelines were: to minimize the consumption of conventional energy in thermal-lighting conditioning, to use traditional technology, to maximize the thermal comfort, and to reach an extra-cost lower than 10%. The post-occupancy monitoring of the building was performed along one complete year (August 9th 2011–August 18th 2012). Data-loggers were installed in each functional area to sense the indoor temperature and relative humidity at time steps of 10 min. A meteorological station was installed near the building. The experimental results showed that during winter the average temperature in the areas of permanent use was 20.3 °C (average outdoor temperature: 10.1 °C) and the heating energy consumption was around 73.5 kW h/m2. During summer the average indoor temperature in the building was 26.9 °C, 1.7 °C below the outdoor temperature average (28.6 °C); cooling systems were turned on when the indoor temperature reached 28 °C, at approximately 11:30 AM, when the outdoor air temperature exceeded 30 °C. Mechanical cooling consumed around 59% of the daily electricity consumption. The PDD results obtained for winter and summer representative days meet the requirements of ISO Norm 7730. Heating and cooling energy saving was around 63% and 76.5% respectively. The monitoring showed that the thermal behavior and energy performance met the expectations of both designers and users, and it is considered satisfactory and promising for low-energy consumption buildings.
Keywords
- Solar non-domestic building;
- Passive solar strategies;
- Energy efficient envelope;
- Monitoring;
- Energy saving;
- Predicted Mean Vote;
- Predicted Percentage of Dissatisfied