A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Evaluation of integrated daylighting and electric lighting design projects: Lessons learned from international case studies
Graphical abstract Display Omitted
Highlights Energy use can be reduced to a third of the existing benchmarks. Energy saving is achieved by using controls with proper monitoring and verification. Integrative lighting drives innovation, but may be associated with energy rebound. User requirements and behaviors are fundamental for comprehensive performance. A definition of integrated daylighting and electric lighting is proposed.
Abstract This article presents and discusses the lessons learned from the monitoring of 25 integrated daylighting and electric lighting international case study projects. The case studies consist of real occupied buildings that have been monitored as part of the International Energy Agency (IEA) SHC Task 61/EBC Annex 77 Programme. The general goal of the case studies was to balance lighting energy use with occupants’ visual and non-visual requirements. This was achieved using innovative solutions for daylighting and electric lighting with advanced controls, but also implementing simple and out-of-the-box strategies. The findings suggest that energy demands for lighting can significantly be reduced by combining sensible daylight provision, efficient lighting sources, and advances in controls. Yet, the effective achievement of project goals requires adequate monitoring, fine-tuning, and verification. The findings also suggest that the adoption of “integrative” lighting – that is, lighting systems that address both visual and non-visual responses – is getting increasingly popular. Catering to non-visual requirements will likely drive further innovation in lighting technology. Currently, there is limited investment available for developing daylighting systems for integrative lighting, and the current related electric strategies often come at the risk of energy rebound effects. Overall, providing daylighting and understanding user requirements are fundamental steps towards achieving quality projects, with potential benefits beyond saving energy.
Evaluation of integrated daylighting and electric lighting design projects: Lessons learned from international case studies
Graphical abstract Display Omitted
Highlights Energy use can be reduced to a third of the existing benchmarks. Energy saving is achieved by using controls with proper monitoring and verification. Integrative lighting drives innovation, but may be associated with energy rebound. User requirements and behaviors are fundamental for comprehensive performance. A definition of integrated daylighting and electric lighting is proposed.
Abstract This article presents and discusses the lessons learned from the monitoring of 25 integrated daylighting and electric lighting international case study projects. The case studies consist of real occupied buildings that have been monitored as part of the International Energy Agency (IEA) SHC Task 61/EBC Annex 77 Programme. The general goal of the case studies was to balance lighting energy use with occupants’ visual and non-visual requirements. This was achieved using innovative solutions for daylighting and electric lighting with advanced controls, but also implementing simple and out-of-the-box strategies. The findings suggest that energy demands for lighting can significantly be reduced by combining sensible daylight provision, efficient lighting sources, and advances in controls. Yet, the effective achievement of project goals requires adequate monitoring, fine-tuning, and verification. The findings also suggest that the adoption of “integrative” lighting – that is, lighting systems that address both visual and non-visual responses – is getting increasingly popular. Catering to non-visual requirements will likely drive further innovation in lighting technology. Currently, there is limited investment available for developing daylighting systems for integrative lighting, and the current related electric strategies often come at the risk of energy rebound effects. Overall, providing daylighting and understanding user requirements are fundamental steps towards achieving quality projects, with potential benefits beyond saving energy.
Evaluation of integrated daylighting and electric lighting design projects: Lessons learned from international case studies
Gentile, Niko (author) / Lee, Eleanor S. (author) / Osterhaus, Werner (author) / Altomonte, Sergio (author) / Naves David Amorim, Cláudia (author) / Ciampi, Giovanni (author) / Garcia-Hansen, Veronica (author) / Maskarenj, Marshal (author) / Scorpio, Michelangelo (author) / Sibilio, Sergio (author)
Energy and Buildings ; 268
2022-05-17
Article (Journal)
Electronic Resource
English
CIE , International Commission of Illumination , DLC , Daylight-Linked Control , EBC , Energy in Buildings and Communities programme , EC , Electrochromic , EFTE , Ethylene tetrafluoroethylene , HDR , High Dynamic Range , IEA , International Energy Agency , LCS , Lighting Control System , LENI , Lighting Energy Numerical Indicator , M&V , Monitoring and Verification , POE , Post-Occupancy Evaluation , PMMA , Poly methyl methacrylate, also known as plexiglass , SHC , Solar Heating Cooling programme , UI , User Interface , Tv,n-h , Visible light transmittance, i.e., hemispherical (h) transmittance at normal (n) incidence , Daylighting , Electric lighting , Shading , Lighting control , Case studies , Energy saving , View out , Non-visual effects , Integrative lighting , Monitoring and verification
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