Andrea Pattini

Andrea Pattini
National Scientific and Technical Research Council | conicet · INAHE - Instituto de Ambiente, Hábitat y Energía

PhD

About

109
Publications
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November 1986 - present
National Scientific and Technical Research Council
Position
  • Principal Investigator

Publications

Publications (109)
Article
When solar radiation passes through a window, its spectral composition changes due to the presence of shades and glazing. While many studies have analysed the impact of different types of glass on correlated colour temperature (CCT), there are only a few cases in which the effect of shading and daylighting systems on this parameter was tested. This...
Article
Full-text available
Several studies have focused on the performance of roller shades in terms of glare, outdoor vision, daylight availability and energy performance. Currently, other parameters linked to visual amenity, such as chromaticity and colour rendition, are becoming relevant. When solar radiation passes through a window, it changes its spectral composition du...
Conference Paper
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RESUMEN El objetivo de este estudio es proponer criterios de calibración que permitan minimizar el error en la medición de iluminancia utilizando teléfonos móviles, a partir de la comparación sistemática con un patrón áureo. Para ello se contrastaron los valores de iluminancia obtenidos con un luxómetro profesional como patrón áureo, con las lectur...
Article
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Glazing is one of the dominant features of modern and contemporary architecture. This envelope design may have a great impact on operational energy demand of buildings. In this work, glazed façade systems available in Argentina are analyzed, with the purpose of determining the associated thermal transmittance ranges, in terms of the profiles’ desig...
Article
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Glare is considered one of the most important variables to reach visual comfort and visual quality. It represents one of the fundamental barriers for an effective use of daylighting in buildings. One of the best performing and robust glare prediction models, relative to other available metrics, is a Daylight Glare Probability (DGP). Based on a vali...
Article
This research presents an experiment where the relationship between view outside (VO), daylight availability (DA) and glare protection (GP) of nine shading fabrics were evaluated. This kind of shading device is placed on the market (Argentina) without a proper characterization of their lighting performance, leading to an inadequate application. Gla...
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A partir del análisis de distintos sistemas de Etiquetado-Energético Ambiental de Edificios (EEAE), en particular sus créditos específicos de Iluminación, el presente plan de trabajo doctoral busca proponer y validar un método de acreditación de iluminación integrativa, desde la perspectiva antropocéntrica propia de la ergonomía ambiental. Los resu...
Article
The goal of the paper is to analyse the daylighting design criteria in ancient Roman domus, by using as case study a famous ancient Roman building: the villa of the Mysteries in Pompeii. At this purpose the work is divided in two sections: a typological analysis of the roman houses, aiming at understanding the link between the ancient building crit...
Article
Light reflectance value (LRV) of indoor surfaces impacts on electricity consumption for lighting. For this reason, inner surface reflectance is one of the parameters required by building energy efficiency codes and standards. In countries with advanced building energy certification processes, the LRV of coatings and paints is given by manufacturers...
Conference Paper
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Objetivo. Determinar la exactitud de distintas aplicaciones de medición de iluminancia a partir de la comparación sistemática con un patrón de referencia y analizar la conveniencia de su uso en la práctica cotidiana de la ergonomía. Método. En un entorno oscuro con una única fuente de iluminación (LED 24W 6000K, CRI>70) se contrastaron los valores...
Article
In various regions in the world, including Argentina, low-performance windows are massively sold, which means that windows energy saving potential is high. Windows energy efficiency depends on thermal indices (U-factor, SHGC) but also on climate and building characteristics. In order to identify the most influential factors and to explore energy sa...
Conference Paper
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Nowadays, natural light in the built environment has taken a positive value from several aspects including energy savings, reduction of environmental impacts, and people´s performance and wellbeing: Experts from the fields of design and architecture are re-discovering daylighting. To seize the full potential of natural light as a source of indoor l...
Conference Paper
Full-text available
AIM AND APPROACH In recent years, dynamic daylight paradigm has resulted in new indicators (UDI, DA, DAcon, sDA, ASE, among others) and significant progress in assessing daylight dynamically, mainly based on values of annual illuminances. Illuminance is essentially a two-dimensional concept insofar as it is concerned with the density of luminous fl...
Article
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Windows significantly impact the energy demand for heating, cooling and lighting in buildings. This study characterizes the energy properties of window technologies available in Argentina by calculating their thermal transmittance (U), solar heat gain coefficient (SHGC) and visible transmittance (VT). Additionally, the impact of different parameter...
Article
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The International Energy Agency, in its report on energy efficient building facades, maintains that building envelopes play a fundamental role in determining thermal and visual comfort and energy consumption for indoor lighting and thermal conditioning. Within this framework, the goal of this article is to conduct a review of the opto- thermal eval...
Article
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Advances in research work in the field of numerical analysis of daylight performance have generated in-depth knowledge on photometric measurements of daylight quality. Most dynamic metrics are based on illuminance, which is a two-dimensional concept insofar as it is concerned with the density of luminous flux incident at a point on a surface. In or...
Article
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We developed a lighting measurement protocol (PC-SRT) for Android mobile devices as a replacement of the Argentinean currently mandatory pen-and-paper measurement protocol (SRT-P), and compared their usability in a field study (n = 26) by means of the system usability scale (SUS). Descriptive statistics showed that PC-SRT (SUS = 58.7; SD = 14.9; lo...
Article
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Within the framework of window labelling system elaboration in Argentina, this article questions the suitability of replicating calculation procedures from other countries with different climatic and technological contexts. This paper analyzes the methodological differences between existing standards for calculating window frame U-factor. It focuse...
Article
Window frames can significantly affect the energy demand of buildings. Due to their complex non-planar geometry, two-dimensional, time-consuming simulations are necessary to estimate with precision heat transfer through frames. However, in dynamic heat transfer calculation through computer-based building performance simulation tools, simplification...
Article
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El diseño de edificios sustentables hace uso de herramientas de simulación energética como Ener-gyPlus. Un elemento clave en la eficiencia energética es la ventana, y particularmente el marco, debido a su transmitancia térmica generalmente elevada en relación a los elementos que compo-nen la envolvente edilicia. Además, el diseño de marco reduce la...
Article
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In several developing countries, energy performance rating programs are currently in progress. Complex fenestration systems (CFS) are building components that play a key role in reducing energy consumption. The development and testing of equipment is central for beginning the energy efficiency rating process of complex glazing systems in these coun...
Conference Paper
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La luz natural en el hábitat ha tomado hoy un valor positivo desde varios aspectos que incluyen el ahorro energético y el bienestar de las personas. Desde el diseño y habitabilidad de los espacios, los expertos consideran a la iluminación natural como un redescubrimiento. Para aprovechar la luz natural como iluminación de espacios, nuestro hábitat...
Conference Paper
Full-text available
La luz natural en el hábitat ha tomado hoy un valor positivo desde varios aspectos que incluyen el ahorro energético y el bienestar de las personas. Desde el diseño y habitabilidad de los espacios, los expertos consideran a la iluminación natural como un redescubrimiento. Para aprovechar la luz natural como iluminación de espacios, nuestro hábitat...
Conference Paper
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El desarrollo sustentable es aquel que permite satisfacer las necesidades del presente sin comprometer la capacidad de las generaciones futuras para satisfacer sus propias necesidades. Bajo este marco conceptual, los autores posicionan a los factores humanos como una disciplina clave para lograr el necesario balance entre capital económico, social...
Conference Paper
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Window frames are not taken into account in Argentina and Brazil building energy efficiency labelling systems. However in Europe, window frames are considered a critical envelop component that may produce high thermal bridging. This work seeks to quantify the impact of considering window frames in building thermal loads calculation and identify wh...
Conference Paper
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La importancia de la iluminación natural en el interior de un aula radica en el ambiente visual y su incidencia en el desempeño cognitivo del estudiante. Estudios sobre la iluminación en escuelas sugieren que la luz natural mejora la atención, el comportamiento y el estado de ánimo. Es decir, la luz natural no sólo sigue siendo un factor predominan...
Conference Paper
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A partir del análisis del protocolo de evaluación de iluminación de espacios de trabajo legalmente vigente en Argentina desde el 2012 y sus limitaciones para lograr una adecuada caracterización de las condiciones lumínicas laborales, los autores proponen el Protocolo Complementario SRT (PC-SRT). Esta nueva metodología, destinada al sector profesion...
Article
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La iluminación es una de las características físicas más críticas en un espa- cio de aprendizaje. El objetivo del presente trabajo es evaluar mediante dos instancias experimentales el desempeño atencional en una tarea de detec- ción de detalles monocromáticos en aulas bajo diferentes condiciones de iluminación, contemplando las variables de tempera...
Article
This paper attempts to extend methodologies of analysis derived from medical disciplines into discomfort glare assessment in office environments. Epidemiology is concerned with the occurrence, prevention and control of health-related events in specific populations. Understanding discomfort glare as an occupational risk factor and glare indexes as i...
Article
La iluminación afecta el comportamiento de las personas y su impresión de los espacios, sin embargo muy poco se ha estudiado respecto de la amabilidad visual de un espacio protegido por sistemas de sombreado (Ruck et al., 2000). El presente trabajo analiza tres aspectos vinculados a este concepto –color, visión exterior y apariencia– en espacios in...
Article
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Lograr una iluminación adecuada en las unidades de cuidados intensivos neonatales es un gran desafío: además de las consideraciones habituales de rendimiento visual, costo, energía y estética, aparecen las diferentes necesidades biológicas de los pacientes, profesionales y familiares. Con el objetivo de revisar los efectos de la luz (natural y arti...
Article
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Achieving adequate lighting in neonatal intensive care units is a major challenge: in addition to the usual considerations of visual performance, cost, energy and aesthetics, there appear different biological needs of patients, health care providers and family members. Communicational aspects of light, its role as a facilitator of the visual functi...
Article
Neonatal intensive care units are a special lighting design challenge. Although natural light is highly desirable, it should be carefully planned to maximise benefits and minimise the problems associated with uncontrolled sunlight. This paper discusses the performance of different passive sunlight control strategies in a neonatal intensive care uni...
Article
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One of the most efficient ways to reduce the energy consumption of artificial lighting is through the proper use of daylight in indoor spaces. However, current regulations governing the use of daylight in indoor spaces are outdated and in some cases are not easy to apply. Thus, designers are not encouraged to seek energy efficient solutions that en...
Article
Full-text available
Una de las maneras más eficientes de reducir el consumo eléctrico por iluminación artificial, es a través del adecuado uso de la luz natural para la iluminación de espacios interiores. Sin embargo, las normativas vigentes que regulan el uso de la iluminación natural en espacios interiores se encuentran desactualizadas y en algunos casos no son senc...
Article
Windows are a key factor for designing energy-efficient buildings, particularly the frame area that can produce high thermal bridging. This paper deals with accurately estimating heat transfer through window frames under fluctuating film coefficients. The one-dimensional frame conductance model traditionally used by building simulation programs is...
Article
While the use of satellite weather files is a possibility in regions without terrestrial stations, it is necessary to consider their impact on daylight simulations. This paper aims to verify the variability of dynamic daylight simulation results according to the weather file used. This study compares the results of daylight simulations in learning...
Article
This research investigates the effects of perceived indoor temperature on glare sensation. A laboratory experiment was carried out where volunteers (n = 19) performed an office-like computer task. Three scenarios with sunspots over the desk were evaluated: a cold scenario, a comfort scenario and a hot scenario. All had the same vertical illuminance...
Conference Paper
Aunque las unidades de cuidados intensivos neonatales (UCIN) brindan atención altamente especializada, no necesariamente ofrecen el ambiente ideal para el desarrollo del neonato. El diseño de iluminación de UCIN constituye un gran desafío: Además de las cuestiones tradicionales de rendimiento visual, costo, energía y estética, aparecen las necesida...
Article
Full-text available
Actualmente los estudios de la iluminación natural focalizan en la amabilidad visual del espacio. Esta nueva tendencia surge de la necesidad de profesionales e investigadores de definir indicadores de la calidad de la iluminación natural. Uno de ellos es la temperatura de color correlacionada (TCC). En este trabajo, se propone analizar la influenci...
Article
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Para lograr el confort visual y el potencial ahorro energético con el uso de la iluminación natural, es necesaria una correcta evaluación de la misma en el interior de un espacio. Uno de los indicadores empleados para evaluar la sensación de incomodidad o dolor causados por altas luminancias en el campo de visión del observador es el deslumbramient...
Article
La última década ha generado importantes avances en los métodos de evaluación del factor iluminación natural, esto ha derivado en un cambio de paradigma. Hasta hace unos años, el comportamiento general de la luz natural en un espacio interior era caracterizado numéricamente mediante el coeficiente de luz diurna (CLD), indicador que caracteriza la i...
Patent
Derecho de autor de producciones tecnológicas. Bien de consumo final o su/s componente/s. (Software). Detalles: Con la aprobación del Protocolo de medición del factor iluminación en puestos de trabajo por parte de la Superintendencia de Riesgos de Trabajo (SRT), se realiza esta aplicación con el objetivo de profundizar en los acondicionamientos lum...
Article
Full-text available
In sunny climates, Transition Spaces may place excessive demands on the human eye and become real functional vision barriers, since building morphology is influenced by the dynamics of daylight. In this study, we describe the lighting characterization of a case study located in the city of Mendoza, analysing different lighting magnitudes and their...
Article
Research concerning the effects of glare on distraction is scarce. We designed a 2x2 repeated measures experiment (n¼32) in order to examine the influence of a large area glare source and glare sensitivity on reported discomfort glare and cognitive performance. Daylight glare probability was the within-subjects variable and glare sensitivity was th...
Chapter
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El trabajo con Tecnologías de la Información y las Comunicaciones (TIC) es un caso paradigmático de sistema de trabajo en que la adopción de una nueva tecnología introduce nuevos riesgos asociados: visuales, musculo-esqueléticos y cognitivos. Se diseñó una Evaluación Post Ocupacional en las oficinas administrativas de la sede central de la Universi...
Article
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Office Visual Display Terminal (VDT) work is a paradigmatic case of a work system in which the adoption of a new technology introduces new associated risks of different natures: visual, musculoskeletal and cognitive. We carried out a Post Occupancy Evaluation at University of Mendoza administrative offices, and made a diagnosis of visual, cognitive...
Article
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En el ámbito educativo, las conductas problemas y los desórdenes atencionales son factores de riesgo que afectan el rendimiento académico y social del niño. La importancia del desarrollo de los procesos de aprendizaje genera la necesidad de evaluar las habilidades atencionales de los ni ños en el ámbito educativo con instrumentos válidos, confiable...
Article
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We determined the visual efficiency and visual discomfort for users of a typical transitional space in luminous climates. The subject moves from a brighter exterior to a dimmer interior, facing an abrupt change in the level of lighting as a potential functional vision barrier, mainly for ageing people. We measured suprathreshold visual efficiency i...
Article
The degree of eye opening (DEO) is proposed as a new indicator of glare in sunny climates in the presence of direct sunlight. A laboratory experiment was carried out (n = 20) in a simulated office space where volunteers performed computer office tasks. Four lighting situations, based on ranges of vertical illuminance at the eye level were evaluated...
Article
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Para la legislación Argentina, la luz natural no es un componente del entorno visual, por ello el LAHV desarrolló un protocolo complementario que incluye la evaluación de la iluminación natural en espacios de trabajo. Se presentan los resultados de la aplicación de dicho protocolo durante una Evaluación Post Ocupacional (n=19) donde se evaluaron: Á...
Article
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The U-factor characterizes the thermal behavior of windows. It depends on the design, the technology and the material of the profiles (frames and sashes) and on the environmental conditions of the fenestration system. The sensitivity of the heat transfer calculation software THERM and WINDOW to those characteristics is evaluated, considering two t...
Article
Full-text available
The use of daylighting in educational spaces contributes from different perspectives such as energy, health and comfort. However it requires careful planning during design. The aim of this study is to determine the impact of solar control system in two classrooms (north-south orientationand east-west orientation), typical of regional educational bu...
Article
Benefits of urban trees are evident from the energy and environmental perspective, likewise they reduce glare and control light intensity. Given the hypothesis that trees reduce visible radiation significantly reaching lower level façades, this study is an approach to the analysis of urban forestation as a solar control element. The methodology emp...
Patent
Derecho de autor de producciones tecnológicas. Bien de consumo final o su/s componente/s. (Software). Detalles: DAYLONGSIM, es de la familia de aplicaciones de SEASONSIM (Exp. 5159481). Ésta es una herramienta de procesamiento estadístico de mediciones continuas (hora-hora) de iluminancia horizontal a lo largo de la jornada de ocupación de un espac...
Patent
Derecho de autor de producciones tecnológicas. Bien de consumo final o su/s componente/s. (Software). Detalles: SEASONSIM es una herramienta de pos-procesamiento estadístico del factor iluminación natural anual a partir de archivos anuales (*.ill). Ésta preserva la rigurosa metodología predictiva de las herramientas dinámicas RADIANCE-DAYSIM y perm...
Article
In oasis cities urban forestation shades the lower level facades of buildings. It is thus crucial to analyze the distributional patterns of sun radiation produced by trees on facades. Nevertheless, the complexity of the canopies requires simplified representations for its study through simulation techniques. On the assumption that lighting behavior...
Article
A large variability in response is usually found when assessing discomfort glare by semantic differential scaling. This issue may be addressed by considering the individual’s tolerance to glare, so we designed an experiment to describe the differences in glare sensation vote caused by a simulated window while glare-sensitive and glare-insensitive s...
Article
Full-text available
In towns like Mendoza (Argentina), where sunny, clear skies predominate, solar radiation provides high values of luminous efficacy. This allows minimizing, and sometimes eliminating, the consumption of electricity in indoor spaces during daylight hours. The goal of this study is to analyze and compare the autonomy of daylight and electricity consum...
Conference Paper
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La radiación solar es lo suficientemente “energética” en términos de eficacia luminosa en ciudades con predominancia de cielo claro con sol. Sin embargo esta iluminación debe ser controlada, de no ser así, la luz solar disponible será eliminada por falta de confort térmico-lumínico. Es decir, se anulará el aporte de luz natural y generará espacios...
Conference Paper
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La atención es un proceso psicobiológico complejo el cual se relaciona con múltiples aspectos del comportamiento así como con otros procesos psicológicos. Es por ello sumamente relevante en el contexto de enseñanza-aprendizaje ya que influye en el desempeño académico y social del alumno. El objetivo del presente trabajo es comparar la eficacia aten...
Article
This article studies the ocular behaviour of office workers in the presence of glare. Additionally, the study seeks to obtain a new indicator for glare prediction that compensates the inaccuracies of glare predicted by the existing models of glare sensation vote (GSV), daylight glare probability (DGP) and daylight glare index. A laboratory experime...
Conference Paper
Full-text available
La temperatura de color es un aspecto de habitual preocupación en el estudio de situaciones de fuentes de iluminación artificial, debido a que éstas presentan bajos índices de reproducción del color (IRC) en relación a la radiación solar. Sin embargo, cuando anteponemos un elemento de control solar a una ventana (ej. filtro solar), se generan difer...
Conference Paper
Full-text available
La última década ha sido testigo de múltiples avances en la forma de analizar numéricamente el comportamiento general de la iluminación natural en espacios interiores. Uno de ellos, fue el producido en el campo del deslumbramiento a través de los métodos de evaluación anual de deslumbramiento. Este nuevo paradigma permite la evaluación dinámica de...
Article
La estimación precisa de la cantidad de luz que ingresa a un edificio, es el primer paso requerido para la evaluación de la capacidad visual y la eficiencia energética proporcionada por la luz natural. El objetivo del trabajo planteado es el estudio del impacto de diferentes bases climáticas, generadas y obtenidas (ARG_Mendoza CCT, ARG_MendozaMN6 y...
Article
In oasis cities urban forest shades the lower level facades of buildings. It is thus crucial to analyze the distributional patterns of sun radiation produced by trees on facades. On the assumption that lighting behavior of trees as sun control elements more closely resembles a louvers system rather than other frequently used solar control systems (...
Conference Paper
Full-text available
El uso de la luz natural para iluminar interiores, puede traducirse en importantes ahorros de energía eléctrica. Por consiguiente, este trabajo expone una metodología para su aprovechamiento, mediante el diseño de ventanas concebidas primordialmente como fuentes luminosas. El objetivo es plantear criterios de diseño de ventanas luminotécnicamente ó...
Article
Full-text available
Visual comfort and energy savings are results of the proper daylighting planning of spaces. As a first step to achieve these objectives we should be aware of the possibility of solar radiation access in the visible range of facades. This paper develops a descriptive morphological analysis of the urban, building, pass through component, and solar co...
Conference Paper
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This paper introduces our interdisciplinary research on the influence daylight in human cognition, specifically in working memory and attention in two cognitive demanding contexts where we spend several hours during our lifespan: office and school environments.
Conference Paper
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El modo en que se entrega la luz natural en un espacio determina la capacidad de ahorro energético del mismo, respecto al consumo de energía para iluminación. Partiendo de la hipótesis de que la correcta caracterización óptica de los sistemas de control solar es uno de los puntos fundamentales para un posterior estudio del consumo energético de un...
Article
Glare is a common visual stressor of office work and in today’s offices the prevalence of information and communication technologies adds additional mental demands. The aim of this study was to explore the role of light as a cognitive stressor in visual display terminal (VDT) work. We used a large area light source in a 2x2x2 full factorial experim...
Conference Paper
Full-text available
Background / Purpose: A Transitional Space (TS) – from exterior to interior – becomes a “lighting barrier” due to the extreme lighting conditions involved. Considering the increase in the adaptation time with ageing, strong illumination change effects will dependon peoples age.An experiment was performed to test this dependency. We measured the t...
Article
Cities display an array of microclimates closely related to the composition of their surfaces and the relationships among their structures. The effect of the shadow cast by a high-rise building is a simple case of this situation. The incidence of the shadow on other buildings or urban spaces can be positive or negative, according to the bioclimatic...