TY - JOUR
T1 - Effectiveness of solar shading devices for buildings
T2 - 7th World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium, WMCAUS 2022
AU - Baltazar, Luís G.
AU - Mata, Bernardo
N1 - Funding Information:
This work was supported by FCT - Portuguese Foundation for Science and Technology under the project UID/CTM/50025. The authors would like to express their gratitude to Turismo de Portugal and Eng. João Catarino for providing indispensable data.
Publisher Copyright:
© 2023 Author(s).
PY - 2023/9/27
Y1 - 2023/9/27
N2 - This study focus on the contribution of solar shading devices on the energy needs of a hotel located in Portugal. There is no doubt that enhancing the energy performance of buildings is a priority given that buildings contribute a major part of European energy consumption. To reduce the buildings' energy consumption, the use of shading systems in the glazing is a passive solution to be considered especially in Mediterranean climates. In this sense, the proposed study arises from the need to make designers aware of the correct choice and dimensioning of solar shading devices. To carry out this study, several numerical simulations were performed using the EnergyPlus® software. First, the existing solar shading devise in the building was analyzed, and then successive simulations were carried out with different solar shadings (such as shutters and Venetian blinds), in order to understand the impact that each one has on energy needs. Additionally, simulations for several orientations and for different SHGC-values of the glazing were made. The results obtained show the importance that the orientations of the glazing and type of shadings have on energy demands as well as the advantages and disadvantages of using a low-emissivity glass. For the climate under study, the use of low-emissivity glass resulted in an increase in heating energy needs between 15 and 19%. Regarding the solar shading devices, it was found that the installation of a Venetian blind on outside of the glazing allowed a reduction of energy needs by up to 45%.
AB - This study focus on the contribution of solar shading devices on the energy needs of a hotel located in Portugal. There is no doubt that enhancing the energy performance of buildings is a priority given that buildings contribute a major part of European energy consumption. To reduce the buildings' energy consumption, the use of shading systems in the glazing is a passive solution to be considered especially in Mediterranean climates. In this sense, the proposed study arises from the need to make designers aware of the correct choice and dimensioning of solar shading devices. To carry out this study, several numerical simulations were performed using the EnergyPlus® software. First, the existing solar shading devise in the building was analyzed, and then successive simulations were carried out with different solar shadings (such as shutters and Venetian blinds), in order to understand the impact that each one has on energy needs. Additionally, simulations for several orientations and for different SHGC-values of the glazing were made. The results obtained show the importance that the orientations of the glazing and type of shadings have on energy demands as well as the advantages and disadvantages of using a low-emissivity glass. For the climate under study, the use of low-emissivity glass resulted in an increase in heating energy needs between 15 and 19%. Regarding the solar shading devices, it was found that the installation of a Venetian blind on outside of the glazing allowed a reduction of energy needs by up to 45%.
UR - http://www.scopus.com/inward/record.url?scp=85177862025&partnerID=8YFLogxK
U2 - 10.1063/5.0170361
DO - 10.1063/5.0170361
M3 - Conference article
AN - SCOPUS:85177862025
SN - 0094-243X
VL - 2928
JO - AIP Conference Proceedings
JF - AIP Conference Proceedings
IS - 1
M1 - 150009
Y2 - 5 September 2022 through 9 September 2022
ER -
