Banca de DEFESA: JULIANA PORTELA VILAR DE CARVALHO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : JULIANA PORTELA VILAR DE CARVALHO
DATE: 26/10/2020
TIME: 08:30
LOCAL: Sala virtual
TITLE:

The inhibition of use of natural lighting at low latitude office type environments.

KEY WORDS:

daylight, glare and occupant behavior.

PAGES: 254
BIG AREA: Ciências Sociais Aplicadas
AREA: Arquitetura e Urbanismo
SUBÁREA: Tecnologia de Arquitetura e Urbanismo
SPECIALTY: Adequação Ambiental
SUMMARY:

Low latitude office rooms often feature closed curtains, activated by the users as an adaptive behavior to the detriment of daylight and outdoor connection. Such loss of fenestration basic functions may compromise the indoor environment quality and the mental and physical health, and increase the artificial lighting electric energy consumption. In Natal-RN (Brazil), curtains are recurrently closed in the office room with air conditioning, despite the external shading device properly designed and the users' autonomy and preference. This thesis focuses on reseraching the reasons why users of these building close their curtains, based on user preferences and daylight performance in four newly designed buildings. The first part of the survey assessed users' preferences regarding the use of natural light, activation of shading and electric light systems, and identification of the main causes for shading system closure through questionnaires and auditing, The second part of the research investigated the nature of the causes of glare through a questionnaire, auditing, and illuminance and luminance measurements with HDR images. DGP and DGI indices were calculated using HDR images and Photosphere applications (WARD, 2019b), plug-ing Glare Analysis (WIENOLD, 2018) and WxFalsecolor (BLEICHER, 2015). The research resulted in the identification of the drivers of ther user's actions to close the systems and three recurring profiles, as well as the causes of the obfuscation. The inhibition of fenestration function and the benefits of daylight is a consequence of the nature of visual discomfort, which may be aggravated by the user's profile. Visual glare discomfort occurs due to the brigthness of the sky combined with a high sky visible fraction and improper layout, causing nuisance during the whole day that leads to the users to maintain the curtains closed, with little variation. Visual discomfort due to direct solar radiation has a temporal variation (hourly or yearly), influencing the user's interactioon dynamics with the internal shading system.

BANKING MEMBERS:
Presidente - 1454154 - ALDOMAR PEDRINI
Interna - 3549781 - BIANCA CARLA DANTAS DE ARAUJO
Externa à Instituição - ROSANGELA TENÓRIO
Externo à Instituição - EDUARDO GRALA DA CUNHA - UFPel
Externa à Instituição - SOLANGE MARIA LEDER - UFPB