Reflectance of the vertical envelopes and its influence on the availability of natural light in the urban canyon of the city of Concepción

Authors

  • Sergio Andrés Venegas-Quintulén Magister en Habitat Sustentable y Eficiencia Energética, Universidad del Bío-Bío, Concepción, Chile.
  • María Beatriz Piderit-Moreno, Dra. Universidad del Bí­o-Bí­o, Concepción

DOI:

https://doi.org/10.22320/07190700.2018.08.01.01

Keywords:

natural light, reflectance, urban canyon, envelope

Abstract

The objective of this study is to evaluate the influence a vertical envelope ́s material has on the availability of natural light in urban settings representative of the city of Concepción, in order to know the potential of these materials to provide natural light. The methodology was based on the selection of case studies from the historic Concepción downtown to build simplified models according to their height/width ratio (H/W). In each case, façade materials with greater presence in the urban canyon were chosen to calculate their reflectance and use in the simulated settings. The results show that the availability of exterior natural light is directly conditioned by the geometric relationship of the urban canyon, which decreases as the H/W ratio increases. It was confirmed that the lighting contribution from the reflection coefficient of the façade ́s material is greater as the H/W ratio increases, that is to say, the greater the density of the urban canyon, the greater the importance of the reflective properties of the façade materials with regards to the availability of natural light.

Downloads

Download data is not yet available.

Author Biography

María Beatriz Piderit-Moreno, Dra., Universidad del Bí­o-Bí­o, Concepción

Departamento de Diseño y Teoría de la Arquitectura 
Universidad del Bio-Bio

References

ALCHAPAR, Noelia y CORREA, Érica. Reflectancia solar de las envolventes opacas de la ciudad y su efecto sobre las temperaturas urbanas. Informes de la Construcción, 2015, vol. 67, no 540, p. 112.

ALCHAPAR, Noelia; CORREA, Érica y CANTÓN, María Alicia. Índice de reflectancia solar de revestimientos verticales: potencial para la mitigación de la isla de calor urbana. Ambiente Construido, 2012, vol. 12, no 3, pp. 107-123.

ARIAS, Silvia y ÁVILA, David. La iluminación natural en la arquitectura. México: Editorial Universidad de Guadalajara, 2007.

CÓRICA, Lorena y PATTINI, Andrea. Protocolo de mediciones de iluminación natural en recintos urbanos. Revista Averma, 2005, vol. 9, pp. 05.85-05.90.

FREEWAN, Ahmed AY; GHARAIBEH, Anne A. y JAMHAWI, Monther M. Improving daylight performance of light wells in residential buildings: Nourishing compact sustainable urban form. Sustainable Cities and Society, 2014, vol. 13, pp. 32-40.

GAFFIN, S. R., IMHOFF, M., ROSENZWEIG, C., KHANBILVARDI, R., PASQUALINI, A., KONG, A. Y. Y., GRILLO, D., FREED, A., HILLEL, D. y HARTUNG, E. Bright is the new black—multi-year performance of high-albedo roofs in an urban climate. Environmental Research Letters, 2012, vol. 7, no 1, pp. 014029.

GREENUP, Phillip y EDMONDS, I. R. Test room measurements and computer simulations of the micro-light guiding shade daylight redirecting device. Solar Energy, 2004, vol. 76, no 1-3, pp. 99-109.

ILUSTRE MUNICIPALIDAD DE CONCEPCIÓN. Ordenanza local del plan regulador comunal de Concepción [en línea]. [Consultado 20 octubre 2017]. Disponible en: https://www.concepcion.cl/wp-content/ uploads/2013/11/Ordenanza-PRCC-Incluye-modif-Ley-20.791-y- decreto-154-de-2015.pdf

MESA, Néstor Alejandro; CORICA, Lorena y PATTINI, Andrea. Evaluation of the potential of natural light to illuminate buildings in dense urban environment. A study in Mendoza, Argentina. Renewable energy, 2011, vol. 36, no 9, pp. 2414-2423.

MONTEOLIVA, Juan Manuel y PATTINI, Andrea Elvira. Iluminación natural en aulas: Análisis productivo dinámico del rendimiento lumínico-energético en clima soleado. Ambiente Construido, 2013, vol. 13, no 4, pp. 235-248.

NASROLLAHI, Nazanin y SHOKRI, Elham. Daylight illuminance in urban environments for visual comfort and energy performance. Renewable and Sustainable Energy Reviews, 2016, vol. 66, pp. 861-874.

PIDERIT, María Beatriz. Ilumina Chile [en línea]. [Consultado 11 septiembre 2017]. Disponible en: http://iluminachile.ubiobio.cl/ RAMÍREZ, David Carlos y OROZCO, Silvia. La envolvente arquitectónica y su influencia en la iluminación natural. Hábitat Sustentable, 2015, vol. 5, no 1, pp. 44-53.

STRØMANN-ANDERSEN, Jakob y SATTRUP, Peter Andreas. The urban canyon and building energy use: Urban density versus daylight and passive solar gains. Energy and Buildings, 2011, vol. 43, no 8, pp. 2011-2020.

YUAN, Jihui; FARNHAM, Craig y EMURA, Kazuo. Development of a retro-reflective material as building coating and evaluation on albedo of urban canyons and building heat loads. Energy and Buildings, 2015, vol. 103, pp. 107-117.

Downloads

Published

2018-06-30

How to Cite

Venegas-Quintulén, S. A., & Piderit-Moreno, M. B. (2018). Reflectance of the vertical envelopes and its influence on the availability of natural light in the urban canyon of the city of Concepción. Sustainable Habitat, 8(1), 06–15. https://doi.org/10.22320/07190700.2018.08.01.01

Issue

V.8, N.1 (2018): June

Section

Artículos

License

The content of articles which are published in each edition of Habitat Sustentable, is the exclusive responsibility of the author(s) and does not necessarily represent the thinking or compromise the opinion of University of the Bio-Bio.

The author(s) conserve their copyright and guarantee to the journal, the right of first publication of their work. This will simultaneously be subject to the Creative Commons Recognition License CC BY-SA, which allows others to share-copy, transform or create new materials from this work for non-commercial purposes, as long as they recognize authorship and the first publication in this journal, and its new creations are under a license with the same terms.

Most read articles by the same author(s)