Banca de DEFESA: João Francisco Walter Costa

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : João Francisco Walter Costa
DATE: 28/11/2024
TIME: 09:00
LOCAL: Híbrida - Auditório do PPG-FAU - https://www.ppgfau.unb.br/component/agenda/agendas
TITLE:

Electrochromic glazing: visual and non-visual effects in non-residential buildings in Brazil.

KEY WORDS:

Electrochromic glazing. Non-residential buildings. Computer Simulations. Visual and non-visual effects. Brazilian luminous context.

PAGES: 411
BIG AREA: Ciências Sociais Aplicadas
AREA: Arquitetura e Urbanismo
SUMMARY:

Glass became a symbol of industrial progress, and hence an inspiration for architects and designers worldwide – regardless of their climatic conditions. Glazed facades in Brazil are used as solution of the dominant economic in non-residential buildings. Since the 1980s, new glazing technologies have been developed as solution. Among them, electrochromic glazing can vary its visible transmittance from 60% to 1%, making it a prominent solution. Therefore, the aim of this research is to investigate the electrochromic glazing for the lighting conditions, including visual and non-visual effects in a representative model of non-residential room within the Brazilian climatic context. Computer simulations using Climate Studio and ALFA were conducted combining 96 variations of the non-residential room across six Brazilian cities/latitudes (Manaus - 3° south, Recife - 8° south, Bom Jesus da Lapa - 13° south, Brasilia - 15° south, Rio de Janeiro - 22° south, and Santa Maria - 29° south), considering four different window orientations, and four glazing materials, including electrochromic glazing, clear, neutral green, and reflective silver glass. Statistical analysis consisted of the categorization of 864 cases for visual effects and 34,560 cases for nonvisual effects. Results demonstrated that electrochromic glazing showed good compliance with criteria for daylight autonomy, particularly at the back of the room, enhancing access to daylight compared to reflective silver glass. Despite its benefits, electrochromic glazing did not prevent problems of glare near the window, presenting similar performance with neutral green glass. Additionally, lack of circadian lighting in the positions in the middle and at the back of the room for electrochromic glazing were detected especially for the north orientation in five of the six cities, except for Recife, and for the south in the cities with lower latitudes. Lack of circadian lighting for the east and the west were less frequent and detected in particular cases. Regarding the spectrum, distortions related to the higher transmission of blue light through the electrochromic glazing in dark tint state can be a source of criticisms from future users if similar technologies are implemented in Brazil. The main contribution of this study was the prediction of the performance of electrochromic glazing regarding visual and non-visual effects of light, indicating potentialities, problems and recommendations regarding the use of this technology in Brazilian latitudes.

COMMITTEE MEMBERS:
Interno - 2658711 - CAIO FREDERICO E SILVA
Presidente - 1662239 - CLAUDIA NAVES DAVID AMORIM
Externo à Instituição - FERNANDO OSCAR RUTTKAY PEREIRA - UFSC
Interna - 1438937 - JOARA CRONEMBERGER RIBEIRO SILVA
Externo à Instituição - PAULO SERGIO SCARAZZATO - USP