1,720,995 research outputs found
Solid State Lighting systems for application in museums
No full textThis thesis presents the results of an experimental study dealing with conservation of artefacts and visual perception for visitors when Solid State Lighting (SSL) is used in museums. The characterization of white LED sources with different spectral distribution has been carried out, focussing on colour rendering properties and potential damage for museum collections. Conservative aspects have been further investigated with experimental series on fading of light-responsivity materials, showing the suitability of LEDs with respect to traditional light sources such as dichroic halogen lamps. The study on visual comfort and perception of artworks under SSL has been conducted through objective and subjective evaluations of different LED system configurations within a typical museum showcase. The results have demonstrated the potential suitability of LED lighting for this application, but also outlined some drawbacks with respect to lighting quality and visibility of displayed object
Progressive colour change in museum objects: a case study at the Italian National Museum of Cinema
No full textSubjective and objective assessment on LED lighting quality for museum showcases
No full textNowadays, the use of Solid State Lighting (SSL) in museum interior design, and in particular in showcases, is becoming increasingly more frequent. According to a proper object fruition and visual comfort, lighting systems within showcases should provide high colour rendering, appropriate light quantity and distribution, as well as avoiding glare and visual distraction effects. Nevertheless their impact on visual perception is not completely known, due to dramatic differences from traditional lighting technology. This paper presents the results of an experimental study on testing the performance of several LED lighting systems inside typical museum showcases. The main goal of the research was to assess the lighting quality perceived by visitors for LEDs with different colour temperature, spatial arrangement and illuminance level on exhibits inside the showcase. The assessment of lighting and visibility conditions was focused on objective and subjective measurements, respectively based on luminance measurements and questionnaire's deliver
Verifica del livello di pressione sonora di calpestio dal laboratorio all’opera: indagini sperimentali e modelli di calcolo
No full textValutazione del comfort adattivo in un edificio residenziale in assenza di climatizzazion estiva
No full textL’obiettivo principale di questo articolo consiste nel valutare le condizioni di benessere termico in un edificio residenziale privo di impianto di climatizzazione estiva, secondo il modello di comfort adattivo definito dalla norma UNI EN 15251:2008.
L’edificio è stato oggetto di una campagna di misurazioni per valutare sperimentalmente le prestazioni dell’involucro opaco (misurazione della trasmittanza termica con metodo termoflussimetrico) e le condizioni termoigrometriche interne durante il periodo estivo. I risultati di misura acquisiti con le attività sperimentali sono stati successivamente impiegati come dati di ingresso e di confronto per la simulazione del
comportamento termico estivo dell’edificio secondo il modello di calcolo dinamico in conformità alla norma UNI EN ISO 52016-1:201
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