Francesco Martellotta

Prof. Francesco Martellotta

Department of Civil Engineering Sciences and Architecture (DICAR), Polytechnic University of Bari, via Orabona 4, 70125 Bari, Italy
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Research Focus & Metrics

Academic Career Length

26Years (2001-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 March 2020 in Energies
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Alessandro CannavaleAlessandro Cannavale
Alessandro Cannavale
Ubaldo AyrUbaldo Ayr
Ubaldo Ayr
FFFrancesco Fiorito
Francesco Fiorito
Francesco MartellottaFrancesco Martellotta
Francesco Martellotta
Electrochromic systems for smart windows make it possible to enhance energy efficiency in the construction sector, in both residential and tertiary buildings. The dynamic modulation of the spectral properties of a glazing, within the visible and infrared ranges of wavelengths, allows one to adapt the thermal and optical behavior of a glazing to the everchanging conditions of the environment in which the building is located. This allows appropriate control of the penetration of solar radiation within the building. The consequent advantages are manifold and are still being explored in the scientific literature. On the one hand, the reduction in energy consumption for summer air conditioning (and artificial lighting, too) becomes significant, especially in "cooling dominated" climates, reaching high percentages of saving, compared to common transparent windows; on the other hand, the continuous adaptation of the optical properties of the glass to the changing external conditions makes it possible to set suitable management strategies for the smart window, in order to offer optimal conditions to take advantage of daylight within the confined space. This review aims at a critical review of the relevant literature concerning the benefits obtainable in terms of energy consumption and visual comfort, starting from a survey of the main architectures of the devices available today.

3 December 2019 in Materials
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Chiara RubinoChiara Rubino
Chiara Rubino
MARILÉS BONET-ARACILMARILÉS BONET-ARACIL
MARILÉS BONET-ARACIL
Jaime Gisbert-PayáJaime Gisbert-Payá
Jaime Gisbert-Payá
Stefania LiuzziStefania Liuzzi
Stefania Liuzzi
Pietro StefanizziPietro Stefanizzi
Pietro Stefanizzi
Francesco MartellottaFrancesco Martellotta
Francesco Martellotta
In recent years, the interest in reusing recycled fibers as building materials has been growing as a consequence of their ability to reduce the production of waste and the use of virgin resources, taking advantage of the potential that fibrous materials may offer to improve thermal and acoustic comfort. Composite panels, made of 100% wool waste fibers and bound by means of either a chitosan solution and a gum Arabic solution, were tested and characterized in terms of acoustic and non-acoustic properties. Samples with a 5 cm thickness and different density values were made to investigate the influence of flow resistivity on the final performance. Experimental results demonstrated that the samples had thermal conductivity ranging between 0.049 and 0.060 W/(m K), well comparable to conventional building materials. Similarly, acoustic results were very promising, showing absorption coefficients that, for the given thickness, were generally higher than 0.5 from 500 Hz on, and higher than 0.9 from 1 kHz on. Finally, the effects of the non-acoustic properties and of the air gap behind the samples on the acoustic behavior were also analyzed, proving that the agreement with absorption values predicted by empirical models was also very good.

1 February 2009 in Applied Acoustics
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Francesco MartellottaFrancesco Martellotta
Francesco Martellotta
ECEttore Cirillo
Ettore Cirillo
ACAntonio Carbonari
Antonio Carbonari
PRPaola Ricciardi
Paola Ricciardi

1 August 2010 in The Journal of the Acoustical Society of America
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Francesco MartellottaFrancesco Martellotta
Francesco Martellotta
Just noticeable difference (JND) values are available for most acoustical parameters currently used in practice. However, they have been determined with reference to conditions typically encountered in concert halls and in rooms for speech, covering a range of reverberation times (T) spanning from 0.5 s to 2 s. When reverberation gets longer, the relationship between measured parameters describing acoustic clarity may change significantly and subjective perception might also be different. The proposed research investigates the influence of reverberation time on JND for clarity measures taking into account three reference cases having T values varying from 2 s to 6 s. Measured B-format impulse responses were properly modified to introduce the desired changes and then auralized with two music motifs for presentation on a 4-channel playback system. Listening tests based on paired comparisons were carried out to determine subjective limens. The results proved to be independent of music motifs and showed that JND in the clarity index is almost independent of T, while JND in the center time is significantly related to T and can be assumed as the 8.5% of the reference TS value.

1 October 2008 in Journal of Sound and Vibration
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Francesco MartellottaFrancesco Martellotta
Francesco Martellotta