TY - JOUR
T1 - An automated louver with innovative parametrically-angled reflective slats
T2 - Prototyping and validation via using parametric control in Grasshopper along with Arduino board
AU - Eltaweel, Ahmad
AU - Su, Yuehong
AU - Hafez, Mohamed
AU - Eltaweel, Waleed
N1 - Funding Information:
Thanks to the Egyptian Government for their financial support for a full scholarship, and also thanks to Helwan University in Egypt for their help and support to nominate the first author, Mr Ahmad Eltaweel to this scholarship. The authors would also like to express their thanks to Mr Jan Flor his suggestions and technical support to this project.
Publisher Copyright:
© 2020 Elsevier B.V.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2021/1/15
Y1 - 2021/1/15
N2 - Energy-saving potential in lighting is significant in office buildings due to their primary occupancy during the daytime. This potential can be realised with an advanced daylighting system being particularly able to deliver more uniform and steadier illumination. This paper presents prototyping and experimental validation of an automated louver with parametrically-angled reflective slats, in order to reflect sunlight to evenly distributed target positions on a ceiling. The illuminated ceiling acts as a source of diffuse light to the room. The physical rotation of the automated louver is controlled parametrically using Grasshopper software together with Arduino board, motors for the motion and illuminance sensors. Validation is an essential stage to ensure the performance of such systems. Two prototypes of the proposed system with different scales are presented, 1:20 and 1:1 scaled mock-ups. The monitoring results verify the principle and aim of the proposed design, i.e., more uniform and distributed daylight illumination, automation control method besides its practicality.
AB - Energy-saving potential in lighting is significant in office buildings due to their primary occupancy during the daytime. This potential can be realised with an advanced daylighting system being particularly able to deliver more uniform and steadier illumination. This paper presents prototyping and experimental validation of an automated louver with parametrically-angled reflective slats, in order to reflect sunlight to evenly distributed target positions on a ceiling. The illuminated ceiling acts as a source of diffuse light to the room. The physical rotation of the automated louver is controlled parametrically using Grasshopper software together with Arduino board, motors for the motion and illuminance sensors. Validation is an essential stage to ensure the performance of such systems. Two prototypes of the proposed system with different scales are presented, 1:20 and 1:1 scaled mock-ups. The monitoring results verify the principle and aim of the proposed design, i.e., more uniform and distributed daylight illumination, automation control method besides its practicality.
KW - Arduino board
KW - Automated louver
KW - Daylighting
KW - Grasshopper
KW - Parametrically-angled
KW - Prototyping
KW - Validation
UR - http://www.scopus.com/inward/record.url?scp=85096560760&partnerID=8YFLogxK
U2 - 10.1016/j.enbuild.2020.110614
DO - 10.1016/j.enbuild.2020.110614
M3 - Article
AN - SCOPUS:85096560760
VL - 231
JO - Energy and Buildings
JF - Energy and Buildings
SN - 0378-7788
M1 - 110614
ER -