1,721,026 research outputs found
Experimental assessment of environmental performance of different typologies of light pipes
No full textThe paper presents the results of an experimental activity concerning different kinds of light pipes, characterized by different section, length and material used as conduction element's coating. Such experimentation was carried out inside a scale model placed under both real sky and a sky scanning simulator. The luminous efficiency of the conduction element was measured for different pipe typologies, as well as the quantity and distribution of sunlight and daylight inside the office. So illuminance levels on working planes were measured using the sky simulator and Daylight Factor values were calculated while digital pictures taken inside the model under real sky condition were used to analyze distribution and dynamic variation of sunlight penetration. Collected data were used to verify if standard requirements were met and to compare performance of different pipes. Characteristics of the scale model, the experimental approach as well as results which were obtained are presented
Cultural landscape: Towards the design of a nocturnal lightscape
Full text linkThe current debate on the cultural landscape is focused on an inclusive definition. It proposes active enhancement practices and local planning tools that are also dedicated to the study of scenic-perceptive components and visual values. However, the current indications are limited to the definition of day images of sites, and are not based on investigations of the corresponding nocturnal images. The legislation and the recommendations in force in the field of lighting supply performance requirements, related to street and urban lighting, do not provide any indications regarding territorial contexts or widespread heritage sites. This paper presents a critical analysis of the lighting condition of different territorial contexts, places of widespread heritage, in particular with reference to the Italian context. The present situation has been investigated through a qualitative analysis, based on a comparison between day and night images, and a quantitative analysis, developed through a measurement campaign on representative case studies of the recurrent territorial context. In most cases, an absence of a specific lighting design strategy, aimed at defining a suitable nocturnal perception of the cultural landscape, has emerged from the collected data. The aim of the work has been to underline the importance of the study of nocturnal images and to show the possibility of developing an analysis and design methodology for these contexts. This approach should be based on a systemic vision, which should allow not only single monuments to be valorised, but also the places and landscapes that characterise a territory from a morphological and cultural point of view
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