Daylight Performance of the Modified Double Light Pipe (MDLP) Through Experimental Analysis on a Reduced Scale Model
This paper is focused on the Modified Double Light Pipe (MDLP), an innovative daylighting system set up by the authors in the Laboratory of Technical Physics of the University “G. D’Annunzio” of Pescara (Italy). It is an evolution of the Double Light Pipe (DLP), designed by the authors to distribute...
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| Format: | Article |
| Language: | English |
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SolarLits
2022-09-01
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| Series: | Journal of Daylighting |
| Subjects: | |
| Online Access: | https://solarlits.com/jd/9-164 |
| _version_ | 1798002324956774400 |
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| author | Paolo Zazzini Alessandro Di Crescenzo Alessandro Di Crescenzo |
| author_facet | Paolo Zazzini Alessandro Di Crescenzo Alessandro Di Crescenzo |
| author_sort | Paolo Zazzini |
| collection | DOAJ |
| description | This paper is focused on the Modified Double Light Pipe (MDLP), an innovative daylighting system set up by the authors in the Laboratory of Technical Physics of the University “G. D’Annunzio” of Pescara (Italy). It is an evolution of the Double Light Pipe (DLP), designed by the authors to distribute natural light in two underground levels of a building and tested through an experimental activity on a reduced scale model. The MDLP has been designed by modifying the same scale model of the DLP with the goal to solve some problems related to its size and the risk of glare, thanks to its smaller encumbrance, and a light shelf applied around the external tube to prevent the occupants of the room from seeing the upper brightest portion of the device. Furthermore, the light shelf reflects light towards the ceiling spreading it more uniformly on the horizontal work-plan. The technological components of the MDLP are shown demonstrating the possibility of installing it in both new and refurbished buildings. Then, the first results of an experimental activity carried out on the model of the MDLP in winter climatic conditions are shown. Although the unfavorable values of external illuminance, the MDLP contributes to distributing natural light in the passage room both with overcast and clear sky conditions. On sunny days, direct solar radiation hits the measure positions on the corners of the room producing peak illuminance values. The illuminance uniformity is calculated according to the EN 12464-1. The results can be considered satisfactory both in terms of internal illuminance and uniformity of light distribution. |
| first_indexed | 2024-04-11T11:50:20Z |
| format | Article |
| id | doaj.art-dba32ceebb9c481f9c2d2c9529863206 |
| institution | Directory Open Access Journal |
| issn | 2383-8701 |
| language | English |
| last_indexed | 2024-04-11T11:50:20Z |
| publishDate | 2022-09-01 |
| publisher | SolarLits |
| record_format | Article |
| series | Journal of Daylighting |
| spelling | doaj.art-dba32ceebb9c481f9c2d2c95298632062022-12-22T04:25:24ZengSolarLitsJournal of Daylighting2383-87012022-09-019216417610.15627/jd.2022.13Daylight Performance of the Modified Double Light Pipe (MDLP) Through Experimental Analysis on a Reduced Scale ModelPaolo Zazzini0Alessandro Di Crescenzo1Alessandro Di Crescenzo2Department INGEO, University “G. D’Annunzio”, Viale Pindaro 42, 65127 Pescara, ItalyDepartment INGEO, University “G. D’Annunzio”, Viale Pindaro 42, 65127 Pescara, ItalyEngineer, Via A.Gramsci n°10/A, Vasto (CH), ItalyThis paper is focused on the Modified Double Light Pipe (MDLP), an innovative daylighting system set up by the authors in the Laboratory of Technical Physics of the University “G. D’Annunzio” of Pescara (Italy). It is an evolution of the Double Light Pipe (DLP), designed by the authors to distribute natural light in two underground levels of a building and tested through an experimental activity on a reduced scale model. The MDLP has been designed by modifying the same scale model of the DLP with the goal to solve some problems related to its size and the risk of glare, thanks to its smaller encumbrance, and a light shelf applied around the external tube to prevent the occupants of the room from seeing the upper brightest portion of the device. Furthermore, the light shelf reflects light towards the ceiling spreading it more uniformly on the horizontal work-plan. The technological components of the MDLP are shown demonstrating the possibility of installing it in both new and refurbished buildings. Then, the first results of an experimental activity carried out on the model of the MDLP in winter climatic conditions are shown. Although the unfavorable values of external illuminance, the MDLP contributes to distributing natural light in the passage room both with overcast and clear sky conditions. On sunny days, direct solar radiation hits the measure positions on the corners of the room producing peak illuminance values. The illuminance uniformity is calculated according to the EN 12464-1. The results can be considered satisfactory both in terms of internal illuminance and uniformity of light distribution.https://solarlits.com/jd/9-164daytimealertnessnon-visual photoreceptionlighting |
| spellingShingle | Paolo Zazzini Alessandro Di Crescenzo Alessandro Di Crescenzo Daylight Performance of the Modified Double Light Pipe (MDLP) Through Experimental Analysis on a Reduced Scale Model Journal of Daylighting daytime alertness non-visual photoreception lighting |
| title | Daylight Performance of the Modified Double Light Pipe (MDLP) Through Experimental Analysis on a Reduced Scale Model |
| title_full | Daylight Performance of the Modified Double Light Pipe (MDLP) Through Experimental Analysis on a Reduced Scale Model |
| title_fullStr | Daylight Performance of the Modified Double Light Pipe (MDLP) Through Experimental Analysis on a Reduced Scale Model |
| title_full_unstemmed | Daylight Performance of the Modified Double Light Pipe (MDLP) Through Experimental Analysis on a Reduced Scale Model |
| title_short | Daylight Performance of the Modified Double Light Pipe (MDLP) Through Experimental Analysis on a Reduced Scale Model |
| title_sort | daylight performance of the modified double light pipe mdlp through experimental analysis on a reduced scale model |
| topic | daytime alertness non-visual photoreception lighting |
| url | https://solarlits.com/jd/9-164 |
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