Search results for "Green wall"
showing 10 items of 10 documents
Biofiltration of airborne VOCs with green wall systems : microbial and chemical dynamics
2018
Botanical air filtration is a promising technology for reducing indoor air contaminants, but the underlying mechanisms need better understanding. Here, we made a set of chamber fumigation experiments of up to 16 weeks of duration, to study the filtration efficiencies for seven volatile organic compounds (VOCs; decane, toluene, 2-ethylhexanol, α-pinene, octane, benzene, and xylene) and to monitor microbial dynamics in simulated green wall systems. Biofiltration functioned on sub-ppm VOC levels without concentration-dependence. Airflow through the growth medium was needed for efficient removal of chemically diverse VOCs, and the use of optimized commercial growth medium further improved the e…
Building green covering for a sustainable use of energy
2013
Nowadays the growth of the cities increased built and paved areas, energy use and heat generation. The phenomenon of urban warming, called urban heat island, influences negatively outdoor comfort conditions, pollutants concentration, energy demand for air conditioning, as well as increases environmental impact due to the demand of energy generation. A sustainable technology for improving the energy efficiency of buildings is the use of green roofs and walls in order to reduce the energy consumption for conditioning in summer and improve the thermal insulation in winter. The use of green roofs and walls can contribute to mitigate the phenomenon of heat island, the emissions of greenhouse gas…
Evaluating the thermal-radiative performance of ENVI-met model for green infrastructure typologies: Experience from a subtropical climate
2022
Abstract Microclimate knowledge has been intensively integrated into urban planning and design to improve the buildings’ energy performance and outdoor thermal comfort. To assess the climatic mitigation strategies, numerical modeling is gaining higher relevance. ENVI-met, a microclimate model to simulate the complex surface-vegetation-atmosphere interactions in the built environment, is receiving increasing popularity. This study aims to systematically evaluate the thermal-radiative performance of the ENVI-met model based on its recent updates. First, a field measurement was conducted in a subtropical city. Thermal-radiative parameters were collected besides three green infrastructure (GI) …
An optimal dimensioning method of a green wall structure for noise pollution reduction
2021
International audience; This paper concern the optimization of a multilayered green wall structure including substrate and foliage in order to reduce as much as possible backward noise reflection and forward transmission from the wall. Each component involved in the wall structure is fully characterized experimentally to get its transfer matrix. Simulation demonstrated that foliage layer superimposed to substrate layer doesn’t affect the transmission losses but contributes greatly to the increase of return losses of the green wall structure. To achieve the best performances in terms of return and forward losses as well as frequency bandwidth, the methods of optimization are discussed inclu…
Monitoring of the effect of solar radiation and rain on the building envelope with integrated vertical vegetation
2022
The goal of the present paper is the verification of the improvement of the performance of a building envelope with a green wall also in conditions of high irradiance (≥0.6 kW/m2) and with variable meteorological conditions (sunny, cloudy, and rainy), with a focus on intense rainfall and tempest. The object of the analysis has been the Innovation and Technology for Development Center in the University Campus of the Polytechnics of Madrid, where a modular system of integrated vertical vegetation has been installed on the skin of the South and West prospects. The study is based on the analysis of the effective thermoregulation capacity of the system in different climatic situations and has be…
Comparative analysis of the thermal insulation performance of a façade enclosure integrated by vegetation under simultaneous windy and rainy climatic…
2023
The literature offers some studies on the capacity of the greenery apparatus to decrease wind speed and regulate temperatures with the combination of the moisture retained by the plants and the air passing through them, but there is little on the maintenance of performance under particular weather conditions. The aim of this contri- bution is to verify the effectiveness of a vegetal façade in particularly windy conditions combined with rainy and/or high-irradiation events. The subject of the study is the enclosure of the Technology Innovation Centre for Development (itdUPM), on the Polytechnic University of Madrid, where a green wall prototype has been installed. For the purposes of the ana…
Ipotesi di riqualificazione per un alloggio duplex del quartiere Cappuccinelli a Trapani
2021
L’edilizia residenziale pubblica può costituire un ambito privilegiato d’intervento per conseguire gli obiettivi di efficienza energetica e impatto ambientale connessi alla strategia di riqualificazione a lungo termine del patrimonio edilizio nazionale. In particolare, il recente Decreto “Rilancio” e gli strumenti fiscali finalizzati a favorire il recupero e l’efficienza energetica degli edifici esistenti pon- gono in una condizione particolarmente vantaggiosa gli interventi sull’edilizia residenziale. L’ar- ticolo illustra i primi risultati di uno studio – che si innesta in una ricerca più ampia finalizzata a dimostrare i benefici derivabili dall’uso della vegetazione per migliorare le con…
Bio-based Materials. Standardizzazione e processi per la commercializzazione
2021
Il contributo si occupa degli aspetti normativi nel campo della produzione e uso di una malta con componenti organici derivanti dal riciclo di scarti agricoli e silvo-pastorali. Viene prestata attenzione alla normativa internazionale più diffusa e nota, a quella europea e a quella italiana. La riduzione del consumo di suolo e di risorse lapidee, degli scarti, la limitazione dell’utilizzo di materiali di cava naturali sono solo alcuni benefici che hanno indotto la comunità scientifica a investire nell’uso di materie prime-seconde di origine vegetale, ecosostenibili; oggi, lo stato dell’arte è molto ricco. Tuttavia, non ci sono ancora normative tecniche e procedurali relative ai materiali che…
La vegetazione per la rigenerazione della città: possibili scenari a Palermo
2014
L’articolo illustra i primi risultati di una ricerca finalizzata ad indagare le ripercussioni derivabili dall’impiego della vegetazione per la riqualificazione energetica dei quartieri di edilizia residenziale pubblica di Palermo. Alla luce dei benefici ambientali e sociali, da più studi dimostrati, che derivano dalla presenza della vegetazione in aree urbane, si è messa a punto una metodologia di indagine finalizzata al progetto degli interventi possibili per il retrofit degli edifici, che consente di valutare gli effetti della vegetazione sia alla scala edilizia che urbana, fornendo dati certi circa la validità delle soluzioni già ampiamente adottate dall’architettura della tradizione med…
Riqualificazione e sostenibilità - L’involucro verde come campo privilegiato di sperimentazione tecnologica.
2015
The study of the housing green for the redevelopment of the buildings along with the testing of innovative products for the realization of vertical gardens and the design of guidelines for the construction and environmental transformation of the waterfront of Marina Todaro of Palma di Montechiaro "act as instruments to define the possible prospects to Palma di Montechiaro can apply for green city of the Province of Agrigento, exploring scenarios still little practiced in this context and in the short and medium term can be attributed character priority ". The originality of this research is also experienced in site participatory approach with the participation of the inhabitants, considered…