Search results for "ARCHITETTURA TECNICA"
showing 10 items of 478 documents
DSSC-integrated Glassblocks for the construction of Sustainable Building Envelopes
2014
The paper shows the first results of the optical performance analysis carried out on the DSSC integrated glassblock, an innovative building product developed at the Department of Architecture of the University of Palermo. In the field of a research that is being conducted in order to define innovative solutions for the construction of photovoltaic and energy efficient translucent building envelopes, different hypotheses of integration of DSSC into the glassblock have been foreseen. The integration of glassblock with third generation PV systems allows to define a novel building-PV product that meets the current requirements of the BIPV (Building Integrated Photovoltaics) market. By means of …
Performance of the Glass Block in Photovoltaic Generation
2015
In this article is presented the preliminary evaluation of the performance of radiation transmission of glass block, used in support of photovoltaic cells, investigating different internal surface points of the block, which are subject to different shading during daylight hours. The aim is to establish how the edging setting, the only opaque element, can reduce the amount of light radiation during the day, introducing in this way a reduction of efficiency of the entire generation system. The generation system can be based on traditional photovoltaic cells or on the most suitable dye sensitized solar cells. An experimental measurement setup employing a microprocessor-based instrument has bee…
Integrating thermal and mechanical characteristics of historic masonry categories: Development of a Sicilian database
2021
Detailed construction analysis is essential to the compatible energy improvement of historic buildings. In-situ measurements are crucial for energy diagnosis but their use is limited, especially in vernacular architecture. This paper exposes the development of a hygrothermal and mechanical database for Sicilian historic walls. The proposed method, applied to eleven historic centres, is based on the investigation of those masonry construction features, which recur in local contexts. Preliminary results concern the case study of Petralia Sottana, where a first set of laboratory measurements of stone compressive strength and thermal conductivity was conducted, together with in-situ tests of ma…
The use of wood with an anti-seismic function in the architecture of palermo during the 18th century
2016
The study analyzes the interventions in the historical buildings after the earthquakes that struck Palermo in 1726 and 1751, with a particular attention to the anti-seismic reinforcements. The research, based primarily on archival documents, focuses on a series of interventions in the architectural heritage, in which the use of wood for structural elements, was able to guarantee for an “antiseismic” reconstruction. Although wood was not commonly used as other materials (iron, for instance) in the post-earthquake reconstruction process of Palermo it was certified its use as an anti-seismic system in the reinforcements of the damaged buildings. It is documented, for instance, the insertion of…
Timber anti-seismic devices in historical architecture in the Mediterranean area
2017
Questo lavoro esamina l’uso di un dispositivo strutturale in legno storico utilizzato come rinforzo della muratura per i sistemi di prevenzione sismica nell'area mediterranea. Tale tecnologia viene realizzata mediante un telaio tridimensionale tridimensionale di legno incorporato nella muratura di pietra per legare insieme le varie parti strutturali e contribuire alla resistenza sismica complessiva. Molto spesso, questo principio costruttivo fu esteso non solo per le parti più deboli, ma per l'intero edificio, creando nuove configurazioni strutturali che erano in grado di assorbire gli effetti delle azioni sismiche. Dalle esperienze costruttive di epoca romana (opus craticium), questo siste…
Plaster ventilated façade system for renovating modern and ancient buildings. A CFD analysis
2021
In the past decades several researches have been related to energy saving and emissions reduction. The technologies that exploit passive natural ventilation, like ventilated roofs and fa ades, have been recognized as the effective methods to provide energy saving and comfort. Ventilated fa ades represent dry assembled coating systems for buildings, traditionally made of panels in different materials. Very few ventilated fa ade systems with plaster finishes are already present on the building market. The potentiality of their design solution can be considered, e.g., when an historic building has to be recovered, since they can enhance the energy efficiency of building without changing its ap…
Peter Nielsen e AA.VV.,- Fluidodinamica computazionale applicata alla progettazione della ventilazione
2011
Recensione del testo di P.V. NIELSEN (CURATORE), F. ALLARD, H.B. AWBI, LARS DAVIDSON, A. SCHALIN, Fluidodinamica computazionale - Applicata alla progettazione della ventilazione, Flaccovio Dario, Palermo 2009 (Traduzione italiana del testo: Computational Fluid Dynamics in Ventilation Design, REHVA, Forssa Finland 2007). La ventilazione naturale è un fattore di salubrità e comfort negli ambienti, ma anche un elemento da valutare al fine della conservazione e della tutela. Oggi l’analisi parametrica dell’efficienza di diverse soluzioni progettuali, fra cui quelle legate alla ventilazione, viene effettuata grazie a simulazioni mediante l'utilizzo della Fluidodinamica Computazionale (detta anch…
Tettoia ecologica inclinata verso il sole
2010
La tettoia fotovoltaica progettata consiste in un elegante struttura pensata a servizio di spazi aperti privati o pubblici, per fornire riparo ed ombreggiamento ed al contempo produrre energia elettrica (potenza di circa 3 kWp). E' composta da due file di cinque sostegni in legno lamellare (su una lunghezza di m 5 circa), travi in profilati di acciaio zincato e copertura con pannelli fotovoltaici ancorati alle traverse metalliche. L’innovazione architettonica che si introduce con questo progetto consiste nel sovvertire il tradizionale concetto di piedritto inteso come elemento verticale di sostegno perpendicolare al piano di calpestio. Infatti, considerata l’inclinazione che necessariamente…
Liberty winter gardens in Palermo: contamination from solar design
2020
At the end of the 19th century, the city of Palermo boasted a tradition of steel elements that could include the most beautiful railings and light steel structures of the time. The paper shows how the technological, formal and spatial aspects of the metallic construction was derived by the application of Central Europe areas examples to the local reality, providing notions on designs, experimentations and originalities. Canopies, verandas, winter gardens and orangeries are architectural elements in iron and glass that represent an added value for the building, they improve the life quality of the people who live there. In particular, in the Liberty architecture these elements took shape thr…
Architettura e costruzione delle “gallerie a pozzi” nella piana di Palermo
2014
Se la tutela dei Beni Culturali ed Ambientali “visibili” risulta spesso incentivata e promossa dall’opinione pubblica che percepisce in modo immediato nel degrado dei monumenti, delle opere d’arte o del paesaggio il rischio di una perdita irrimediabile, la salvaguardia di tutto ciò che è nascosto alla vista risulta spesso di più difficile attuazione: è il caso del vasto “Patrimonio Cavo” nascosto nel sottosuolo palermitano. In questo panorama rappresenta un’eccezione il “Corso Gesuitico Alto” a Palermo, una complessa architettura di cunicoli sotterranei destinati alla captazione e all'adduzione dell’acqua, uno dei pochi sistemi ancora attivi, non mutilato dagli scavi ciechi ed irresponsabil…