Strategies for improving thermal performance and visual comfort in office buildings of Central Chile

Bustamante Gómez, Waldo;Encinas Pino, Felipe;Pino, Alan;Otarola, Roberto
(2011) PLEA 2011 - 27th International Conference on Passive and Low Energy Architecture: Architecture & Sustainable Development — Location: Louvain-la-Neuve (13.July.2011)

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Authors
  • Bustamante Gómez, WaldoPontificia Universidad Católica de Chile
    Author
  • Encinas Pino, FelipeUCLouvain
    Author
  • Pino, AlanPontificia Universidad Católica de Chile
    Author
  • Otarola, RobertoPontificia Universidad Católica de Chile
    Author
Abstract
Overheating, high cooling energy demand and glare are recurrent problems in office buildings in Santiago and Valparaíso, Chile. Santiago (33°S) presents a Mediterranean climate, with a high temperature oscillation between day and night during cooling period. Valparaiso (33°S), by the coast, shows lower temperature fluctuation compared with Santiago. In order to evaluate impact on thermal and lighting performance of office buildings of these cities, a sensitivity study has been made. Variations on window façade area, type of glazing, orientation, solar protection and nocturnal ventilation and respective impact on cooling energy demand and lighting performance has been considered. The methodology includes an evaluation of heating and cooling demand and variation of indoor temperature when no conditioning system is applied. For this purpose a simulation software under dynamic conditions was used (TAS). The effect on natural lighting was also analysed using Radiance software. Daylight Factor, Daylight Autonomy (DA) and Useful Daylight Iluminance (UDI) were used in this analysis, considering different sky conditions. Completely glazed facades, even with selective glazing are not recommended for these cities. Glare problems are possible to be avoided with appropriated solar protection, orientation of windows and selective glazing.
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Bustamante Gómez, W., Encinas Pino, F., Pino, A., & Otarola, R. (2011). Strategies for improving thermal performance and visual comfort in office buildings of Central Chile. In Bodart, Magali (ed.), PLEA 2011 - Architecture & Sustainable Development: Conference Proceedings on the 27th International Conference on Passive and Low Energy Architecture vol.1 (p. p. 903-908). Presses universitaires de Louvain. https://hdl.handle.net/2078.5/210103