1,721,005 research outputs found
Illuminazione radente ed a proiezione su grandi superfici
No full textIl presente lavoro contiene i risultati di una ricerca
applicata effettuata dagli autori nell’ambito delle
attività del Dipartimento di Fisica Tecnica dell’Università
di Roma “La Sapienza”, oggetto peraltro
di due tesi di laurea svolte nella Prima Facoltà
di Architettura dello stesso Ateneo. Il tema
riguarda l’illuminazione dell’abside e del transetto,
prima fase di un programma che prevede il rifacimento
completo del sistema di illuminazione
della Basilica di S. Croce in Gerusalemme.
Gli obiettivi principali del progetto prevedevano,
tra gli altri, il contenimento dei livelli di illuminamento
sugli affreschi all’interno dei limiti previsti
per finalità conservative dalla normative vigenti;
l’ottenimento di un corretto equilibrio delle luminanze
per valorizzare al massimo le caratteristiche
morfologiche dello spazio e la plasticità degli
elementi scultorei; la sottolineatura della centralità
dell’altare durante le celebrazioni; il contenimento
dei fenomeni di abbagliamento sui celebranti
e sui fedeli; la minimizzazione dell’impatto
visivo degli apparecchi di illuminazione (anche ad
impianto spento); la concentrazione degli apparecchi
di illuminazione in un numero limitato di zone
facilmente raggiungibili per le operazioni di manutenzione
e puntamento.
Nel presente lavoro vengono documentate tutte le
fasi di lavoro che hanno condotto alla soluzione finale,
attraverso le simulazioni, le misure di illuminamento
e luminanza e le fotografie di cantiere.
I risultati finali sono stati confrontati con quelli
che caratterizzavano la soluzione precedente.This paper presents the results of an applied research developed in collaboration with Technical Physics Department of “Sapienza” University. The focus is a design method applied to Santa Croce in Gerusalemme Basilica indoor lighting. Main challenges has been illuminance values control on frescos, luminance balance on the surfaces and objects in order to enhance morphological characteristics of the Basilica and three dimensional characteristics of sculptures; the centrality of altar during the ceremonies; glare control for priests and believers; visual impact control of lighting fixtures, in switch on and off configuration; lighting fixtures layout in a particular way to optimise maintenance and aiming activities. Paper illustrates all the work phases, lighting simulations, mock-up, lighting measurements, final installation and presents, as conclusion, a generalization of results to use in Basilica with similar morphological and functional characteristics
Dalle urban cells alla smart grid
No full textIl volume tratta i risultati della mid-term review del progetto di grande rilevanza SoURCE- Sustainable Urban Cells, che si inquadra nell’ambito del Programma Esecutivo per la Cooperazione Scientifica e Tecnologica tra la Repubblica Italiana ed il Regno di Svezia per gli anni 2010-2013. La tematica generale affrontata è quella della sostenibilità ambientale nelle aree urbane. Il contributo specifico tratteggia le prospettive di innovazione introdotte dalle smart grid, ne cita alcune significative applicazioni, segnala le politiche europee indirizzate al loro sviluppo ed il ruolo fondamentale che le smart grid assumono nella trasformazione delle città in smart cities
The “D2P” Approach: Digitalisation, Production and Performance in the Standardised Sustainable Deep Renovation of Buildings
Full text linkThe carbon neutrality of the built environment plays a key role in fighting the climate crisis and fully realising ecological transition. In this field, the aim of the paper is to promote a new production paradigm that enables an integrated process from the design phase to the production of high-performance building components, to their “tailor-made installation” for the efficiency enhancement of the national residential building stock, reducing resource consumptions, costs, construction time and the associated environmental impact. The methodological approach is based on three key elements: digitalisation, production and performance. Recent technologies make it possible to achieve important goals, through the creation of the digital cataloguing of existing buildings, advanced dynamic simulations, improved energy performance for building stock and industrial production chain optimisation of the construction sector according to off-site construction criteria. This strategy was tested on a demonstrator building. The methodology application has made it possible to validate a catalogue of standardised insulation solutions that can be applied to 90% of the existing national building stock and that can reduce installation times by 60% and costs by around 30% compared to traditional techniques, while complying with the national requirements on thermal building insulation. The study is able to organise production according to advanced standardisation in order to meet the real demand of the market with advantages in term of production costs and economies of scale
Support decision tool for sustainable energy requalification the existing residential building stock. The case study of trevignano romano
No full textThe control and improvement of energy-environmental quality in buildings are responsible for almost 40% of the emissions related to energy and processes, and are essential to achieve the commitment of the Paris Agreement and the Sustainable Development Goals (SDGs) United Nations (UN). This paper provides a support tool to planners and administrators of the territory for the identification of interventions aimed at the energy requalification of the existing Italian building heritage, mainly for residential use. The purpose of this tool is to reduce energy consumption by intervening on the building envelope with specific solutions that are identified through a matrix resulting from the study. In the first part of the study, an analysis was carried out on various factors such as the existing residential building, the building and construction types and the materials of the envelope typical of each construction period, which are critical for energy efficiency issues. In the second part of the study, the analysis of the state of the art of the insulating materials existing on the international and national market was carried out, in order to standardize the efficiency interventions of the building envelope. By exploiting the potential of the proposed matrix, and integrating it with Geographic Information System (GIS) technology, it would be possible to create a database containing information regarding the characteristics of the building envelope of the residential building stock and to identify a set of insulation interventions more suited to each specific case near Rome, Italy
Urban Renewable Energy Communities and Energy Poverty. A proactive approach to energy transition with Sun4All project
Full text linkThe transition to an environmentally sustainable, low-carbon economy requires
fundamental transformations in various sectors such as industry, technology, and especially in
society as a whole. Adopting and encouraging community energy are the key policies to facilitate
sustainable energy and ecological and social transition. The Sun4All methodology aims at the
design, promotion and building of energy communities based on solidarity, to contrast energy
poverty and foresee the engagement of vulnerable households that normally have many
difficulties in becoming active members of an energy sharing project realising PV plants. The
selection of the beneficiaries’ families in the urban context is a process both technical, including
socio-territorial GIS-based analysis, and social, activating the participation of grass-root
associations, local schools, and facilitators. The strategic role of the municipality is coherent
with the SECAP and results in the offers of several public building roofs with PV plants that are
the cores of the Sun4all Energy Communities and will ensure the delivery of economic benefits
for the vulnerable households, while through workshops, site visits to the plants, and
communication activities will increase the citizens' knowledge. The purpose of this paper is to
explore the benefits that go far beyond energy efficiency, which is only the starting point
Studio sperimentale di una lama d’aria a ugelli per la compartimentazione di ambienti soggetti ad accidentale rilascio di inquinanti gassosi
No full text
The Potential of digital twin model integrated with artificial Intelligence systems
No full textThe paper explores the use of a 'digital twin model' applied to the case study of a residential district, and organized as a three-dimensional data system able to participate to the intelligent optimization and automation of the energy management and efficiency of the building system. The case study focuses on the area called Rinascimento III in Rome, consisting of 16 eight-floor building hosting 216 apartment units with an overall percentage of self-renewable energy produced by the building complex equal to 70%. This already quite high percentage means that the building complex can be defined as a Near Zero Energy Building (NZEB), i.e. a building that has a very high energy performance, and the nearly-zero or very low amount of energy required should be covered to a very significant extent by energy from renewable sources, including energy from renewable source produced on-site or nearby
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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