The research presents a study of daylighting performance of Roller and Venetian dynamic shading system in an office of Pellinindustrie, located in Codogno Lombardy, Italy. The methodology was adopted following the approach of the most advanced articles on the subject. The analysis was performed with ventilated double-skin façade and triple glazed façade regarding dynamic shading systems. The illuminance measurements were carried out by both field measurement and software simulations. The simulation was done using HoneybeePlus with 4 categories of Radiance parameters and the accuracy of the results was compared using the analytical calculation mean bias error (MBE) and root mean square error (RMSE). Grasshopper and Honeybee+ use XML-BSDF file for radiance material of the glazing with complex shading systems as an input, which is generated from the LBNL-Windows 7.7.10 software. Using the grasshopper and honeybee+, occupant-based glare metrics (DGP), and dynamic daylight metrics (UDI300-3000lux, sDA300/50%, and ASE) in defining the daylit zone has been analyzed. CBDM simulation carried out for annual illuminance results and monthly average illuminances were performed for the office occupied hours (8-18). The results have shown that the performance of daylighting distributions in the working space is associated with the type of glazing and shading systems (Roller or Venetian), as well as the glazing to wall ratio. A point-by-point illuminance comparison between onsite measurement and software simulation results was performed in a clear sky and overcast sky conditions using similarity coefficient calculation.
La ricerca presenta uno studio delle prestazioni di illuminamento diurno di due sistemi di ombreggiamento dinamici, uno a rullo e uno di tipologia a veneziana, installati in un ufficio della Pellinindustrie, situato a Codogno, Lombardia, Italia. La metodologia di valutazione è stata definita seguendo gli approcci più comuni della letteratura di settore. L'analisi è stata eseguita con facciata ventilata a doppia pelle e facciata a triplo vetro per quanto riguarda i sistemi di ombreggiamento dinamico. Le misure di illuminamento sono state eseguite sia con misurazioni sul campo che con simulazioni software. La simulazione è stata eseguita usando HoneybeePlus con 4 categorie di differenti parametri di Radiance e la precisione dei risultati è stata confrontata usando il calcolo analitico dell'errore medio di bias (MBE) e l'errore quadratico medio (RMSE). Grasshopper e Honeybee+ usano come input il file XML-BSDF per il materiale di LBNL Radiance delle vetrate con sistemi di ombreggiamento complessi, che viene generato dal software LBNL-Windows 7.7.10. Utilizzando grasshopper e honeybee+, sono state analizzate le metriche di abbagliamento basate sull'occupante (DGP) e le metriche di luce diurna dinamica (UDI300-3000lux, sDA300/50% e ASE) nella definizione della zona illuminata a giorno. La simulazione CBDM effettuata per i risultati di illuminamento annuale e gli illuminamenti medi mensili sono stati eseguiti per le ore lavorative di occupazione degli uffici (8-18). I risultati hanno mostrato che la performance delle distribuzioni di luce diurna nello spazio di lavoro è associata al tipo di vetrate e ai sistemi di ombreggiatura (a rullo o veneziana), così come al rapporto tra vetrate e pareti. Un confronto dell'illuminamento punto per punto tra la misurazione in loco e i risultati della simulazione software è stato eseguito in condizioni di cielo sereno e coperto usando il calcolo del coefficiente di somiglianza.
Evaluation of daylighting distribution in office buildings. A case study
Geletu, Hawi Mahmud
2019/2020
Abstract
The research presents a study of daylighting performance of Roller and Venetian dynamic shading system in an office of Pellinindustrie, located in Codogno Lombardy, Italy. The methodology was adopted following the approach of the most advanced articles on the subject. The analysis was performed with ventilated double-skin façade and triple glazed façade regarding dynamic shading systems. The illuminance measurements were carried out by both field measurement and software simulations. The simulation was done using HoneybeePlus with 4 categories of Radiance parameters and the accuracy of the results was compared using the analytical calculation mean bias error (MBE) and root mean square error (RMSE). Grasshopper and Honeybee+ use XML-BSDF file for radiance material of the glazing with complex shading systems as an input, which is generated from the LBNL-Windows 7.7.10 software. Using the grasshopper and honeybee+, occupant-based glare metrics (DGP), and dynamic daylight metrics (UDI300-3000lux, sDA300/50%, and ASE) in defining the daylit zone has been analyzed. CBDM simulation carried out for annual illuminance results and monthly average illuminances were performed for the office occupied hours (8-18). The results have shown that the performance of daylighting distributions in the working space is associated with the type of glazing and shading systems (Roller or Venetian), as well as the glazing to wall ratio. A point-by-point illuminance comparison between onsite measurement and software simulation results was performed in a clear sky and overcast sky conditions using similarity coefficient calculation.| File | Dimensione | Formato | |
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https://hdl.handle.net/10589/174276