Fragliasso, Francesca (2018) SMART LIGHTING CONTROLS FOR ENERGY EFFICIENCY AND VISUAL COMFORT. [Tesi di dottorato]

[img]
Preview
Text
tesi_dottorato_Fragliasso_Francesca.pdf

Download (15MB) | Preview
[error in script] [error in script]
Item Type: Tesi di dottorato
Lingua: English
Title: SMART LIGHTING CONTROLS FOR ENERGY EFFICIENCY AND VISUAL COMFORT
Creators:
CreatorsEmail
Fragliasso, Francescafrancesca.fragliasso@unina.it
Date: 10 December 2018
Number of Pages: 100
Institution: Università degli Studi di Napoli Federico II
Department: Ingegneria Industriale
Dottorato: Ingegneria industriale
Ciclo di dottorato: 31
Coordinatore del Corso di dottorato:
nomeemail
Grassi, Michelemichele.grassi@unina.it
Tutor:
nomeemail
Bellia, LauraUNSPECIFIED
Date: 10 December 2018
Number of Pages: 100
Uncontrolled Keywords: dayligth; lighting; daylight-linked control systems; lighting control systems performance parameters; energy savings
Settori scientifico-disciplinari del MIUR: Area 09 - Ingegneria industriale e dell'informazione > ING-IND/11 - Fisica tecnica ambientale
Date Deposited: 02 Jan 2019 15:22
Last Modified: 23 Jun 2020 14:12
URI: http://www.fedoa.unina.it/id/eprint/12565

Abstract

Daylight-linked control systems (DLCSs) are automated control systems aiming at optimizing the integration between daylight and electric light. They are based on the use of photosensors detecting available light. Photosensor signals are received by controllers, that in turn regulate the luminous flux emitted by luminaires. Despite the benefits in terms of both energy savings (the use of daylight allows to reduce both the luminaires emitted flux and the number of lighting systems operating hours) and comfort improvement (the use of daylight affects both visual and non-visual comfort), such systems are not so spread as expected for different reasons: their functioning is affected by a big amounts of factors (daylight availability, lighting systems components -above all photosensors-, commissioning), but it is not completely clear what is the specific incidence of each one of them on DLCSs global functioning; calculation models implemented in the available software useful to model and simulate DLCSs functioning are not reliable, so it is difficult for designers to estimate the actual benefits connected to DLCSs installation and estimate both achievable energy savings and economic advantage; finally, currently shared parameters useful to evaluate DLCSs do not exist and these systems are evaluated exclusively considering energy savings they allow to achieve. Given these premises the goal of the thesis is to propose a research methodology useful to analyse DLCSs and evaluate their performances both during preliminary design stages and during commissioning. At this purpose the research is organized in the following phases: state-of-the-art analysis aiming at understanding what are the parameters mostly influencing DLCSs performances; proposal of new performance parameters able to evaluate the capability of DLCSs in integrating daylight (Daylight Integration Adequacy -DIA-, Percentage Intrinsic Light Excess -ILE%-, Percentage Light Waste -LW%-, Percentage Light Deficit LD%); development of a simulation tool (called DET- Daylight-linked control systems Evaluation Tool) useful to simulate DLCSs functioning, overcoming the limits of the available software, and to calculate the above-mentioned parameters; setting up of an experimental test-room, where daylight measurements were performed; use of the measured data to simulate the functioning of different control systems by using DET and to evaluate how they would operate, once installed in the test-room and what would be the parameters influencing their performances.

Actions (login required)

View Item View Item