PUBLICACIONES últimos 10 años

Chi, D.A.; Moreno, D.; Navarro, J. (2018). Impact of perforated solar screens on daylight availability and low energy use in offices

Revista:
Advances in Building Energy Research

Impacto:
SJR (2019): 0.422. BUILDING AND CONSTRUCTION, Q1 (80/248)

DOI:
10.1080/17512549.2018.1550439

Abstract:
In this paper, daylighting and thermal analysis are carried out in synergy to ensure the best overall performance of perforated solar screens (PSS) used on fully glazed offices facing towards South, East, West and North, placed in Seville. The study has been conceived by applying multiple orthogonal arrays to account oriented transverse comparisons of several PSS design variables, with respect to their impact on the Daylight Availability (DAv) and the annual energy demand (lighting plus cooling and heating). Daylighting and irradiation calculations are carried out with DIVAfor-Grasshopper. The irradiation simulations are needed for simplifying the PSS complex geometries in order to perform thermal calculations with EnergyPlus. The results revealed that the use of PSS on façades is effective for enhancing DAv at the four orientations, in terms of the actual fully daylit area and the useful daylight illuminances. In comparison with fully and partly glazed façades, PSS increased the electrical lighting use but they considerably decreased the cooling energy use. Since lighting resulted lower and less influencing than cooling, PSS effectively reduced the total annual energy consumption. Therefore, optimizing daylighting through PSS can lead to low energy projects.