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Retro-reflectivity is a promising surface capability, which has attracted the interest of researchers for building applications in order to counteract Urban Heat Island (UHI) effects. This work aims at studying the impact of the substrate material on the optic performance of retro-reflective (RR) coatings. Three types of substrate materials were investigated: smooth pine wood panels, rough plywood panels, and smooth acetate sheets. The RR coating samples were made by firstly adding a high reflective white paint onto the substrate material and a homogeneous RR glass beads layer on the top. As a reference case, also diffusive samples, without RR beads, were developed. Samples have been tested through a spectrophotometric and an angular reflectivity analysis. Results show that, despite a lower global reflectance of the RR samples with respect to the diffusive ones, the glass beads coating provides a good retro-reflective capability to all the diffusive samples. Additionally, the roughest RR sample exhibited the highest RR capability of up to 16%, with respect to the other smoother samples. Future developments may involve the optimum design of RR coatings, in terms of their optic performance by varying the substrate materials and roughness, the glass beads density and dimension.
Alessia Di Giuseppe; Marta Cardinali; Beatrice Castellani; Mirko Filipponi; Alberto Gambelli; Lucio Postrioti; Andrea Nicolini; Federico Rossi. The Effect of the Substrate on the Optic Performance of Retro-Reflective Coatings: An In-Lab Investigation. Energies 2021, 14, 2921 .
AMA StyleAlessia Di Giuseppe, Marta Cardinali, Beatrice Castellani, Mirko Filipponi, Alberto Gambelli, Lucio Postrioti, Andrea Nicolini, Federico Rossi. The Effect of the Substrate on the Optic Performance of Retro-Reflective Coatings: An In-Lab Investigation. Energies. 2021; 14 (10):2921.
Chicago/Turabian StyleAlessia Di Giuseppe; Marta Cardinali; Beatrice Castellani; Mirko Filipponi; Alberto Gambelli; Lucio Postrioti; Andrea Nicolini; Federico Rossi. 2021. "The Effect of the Substrate on the Optic Performance of Retro-Reflective Coatings: An In-Lab Investigation." Energies 14, no. 10: 2921.
Wine production is a key sector for the Italian economy, representing 13 billion euros per year. The proportion of the market raises concerns about improving the production technology at low cost, safe practices, and low environmental impacts. The recurrent life cycle assessment performed does not report on the impacts of frost protection. This study presents the potential environmental impact of a novel late frost protection technique for vineyards that is currently under development. It consists of an organic coating made of sugar and straw to prevent vine damage due to frosts in vineyards in the coldest hours of late winter and early spring. From previous research at the University of Perugia (Italy), the technique has proven to be an effective protection method for vine shoots. Currently, the yields are protected by highly energy-demanding methods. For this study, we simulated two different scenarios of frosting protection so we could point out possible hotspots for the field application of the novel method and compare it to a technique usually employed in central Italy. Under the Centrum voor Milieukunde Leiden (CML) method, the cotton candy technique is estimated at 316 kg CO2 equivalent emissions for hectare. Employing the organic sugar-coating means avoiding 69,375 kg of CO2 eq. compared to the traditional technique of oak wood-burning into the vineyard. Preliminary cost analysis demonstrated the economic viability of implementing the organic coating.
Fabiana Frota De Albuquerque Landi; Alessia Di Giuseppe; Alberto Gambelli; Alberto Palliotti; Andrea Nicolini; Anna Pisello; Federico Rossi. Life Cycle Assessment of an Innovative Technology against Late Frosts in Vineyard. Sustainability 2021, 13, 5562 .
AMA StyleFabiana Frota De Albuquerque Landi, Alessia Di Giuseppe, Alberto Gambelli, Alberto Palliotti, Andrea Nicolini, Anna Pisello, Federico Rossi. Life Cycle Assessment of an Innovative Technology against Late Frosts in Vineyard. Sustainability. 2021; 13 (10):5562.
Chicago/Turabian StyleFabiana Frota De Albuquerque Landi; Alessia Di Giuseppe; Alberto Gambelli; Alberto Palliotti; Andrea Nicolini; Anna Pisello; Federico Rossi. 2021. "Life Cycle Assessment of an Innovative Technology against Late Frosts in Vineyard." Sustainability 13, no. 10: 5562.
Late frosts are one of the major impact factors on agriculture worldwide with large economic losses for agricultural crops, with a significant impact also in wine production. Given the importance of the wine sector in the world, more and more efforts are being made to identify innovative techniques capable of creating a low-cost and effective protection for vine shoots, as well as reducing energy consumption. In a previous work, cotton candy was identified as an insulating material to solve the problems related to late frosts on vineyards and limit its damages as much as possible. From the results of the previous research, it has proved that cotton candy is an excellent thermal insulator, but it degrades quickly in windy conditions. Thus, climatic tests carried out in windy condition showed that straw can greatly slow down the degradation of cotton candy over time, giving an indirect contribution to the protective effectiveness of cotton candy. In addition, several tests were conducted with different amounts of sugar and straw without wind to evaluate whether the straw can itself make a contribution in terms of thermal insulation, as well as contribute to the protective effectiveness of cotton candy, minimizing energy use as well.
Alessia Di Giuseppe; Alberto Gambelli; Federico Rossi; Andrea Nicolini; Nicola Ceccarelli; Alberto Palliotti. Insulating Organic Material as a Protection System against Late Frost Damages on the Vine Shoots. Sustainability 2020, 12, 6279 .
AMA StyleAlessia Di Giuseppe, Alberto Gambelli, Federico Rossi, Andrea Nicolini, Nicola Ceccarelli, Alberto Palliotti. Insulating Organic Material as a Protection System against Late Frost Damages on the Vine Shoots. Sustainability. 2020; 12 (15):6279.
Chicago/Turabian StyleAlessia Di Giuseppe; Alberto Gambelli; Federico Rossi; Andrea Nicolini; Nicola Ceccarelli; Alberto Palliotti. 2020. "Insulating Organic Material as a Protection System against Late Frost Damages on the Vine Shoots." Sustainability 12, no. 15: 6279.