Search results for "SISTEMI"
showing 10 items of 2026 documents
Simplified Energy Model and Multi-Objective Energy Consumption Optimization of a Residential House
2022
Featured Application: The potential application of the proposed model is a computationally inexpensive semi- or fully automated system for the optimization of operation in residential buildings in terms of energy consumption. Some analyses state that buildings contribute to overall energy consumption by 20–40%, which, in the context of the recent geopolitical energy crisis, makes them a critical issue to study. Finding solutions for better energy management in buildings can have a significant impact on the energy sector, thus reducing EU energy dependencies and contributing to the fulfillment of the REPowerEU goals. This paper focuses on proposing a simplified model of a residential house c…
A Methodology for Exploiting Smart Prosumers’ Flexibility in a Bottom-Up Aggregation Process
2022
The electrical power system is evolving in a way that requires new measures for ensuring its secure and reliable operation. Demand-side aggregation represents one of the more interesting ways to provide ancillary services by the coordinated management of a multitude of different distributed resources. In this framework, aggregators play the main role in ensuring the effectiveness of the coordinated action of the distributed resources, usually becoming mediators in the relation between distribution system operators and smart prosumers. The research project DEMAND recently introduced a new concept in demand-side aggregation by proposing a scheme without a central aggregator where prosumers ca…
Portacono SG per alimentazione industriale
2011
Che imprevisti a Sunny Island!
2015
Attraverso un divertente racconto di fantasia, il lettore avrà modo di scoprire i principi del Pensiero Sistemico e familiarizzare con alcuni concetti fondamentali, tra i quali: le relazioni direttamente e inversamente proporzionali, i feedback, i limiti alla crescita, gli effetti a breve e lungo termine, i comportamenti contro-intuitivi. Il lettore potrà allenare la sua mente a cogliere la complessità di fenomeni o eventi che, a uno sguardo superficiale, potrebbero invece apparire semplici da comprendere e da gestire. Il libro si rivolge a ragazzi dai nove anni in su, a insegnanti delle scuole di primarie e secondarie che progettano di presentare i principi del pensiero sistemico ai propri…
Le strutture difensive delle colonie greche di Sicilia. Storia, tipologia, materiali
2010
Il presente Volume si propone di approfondire la conoscenza storica, tipologica e materica delle strutture difensive presenti nei maggiori siti archeologici siciliani di fondazione greca, premessa indispensabile per un qualsiasi tipo di intervento di recupero e fruizione. Il Volume affronta, innanzitutto, il tema della colonizzazione greca in Sicilia, in quanto la nascita delle fortificazioni è strettaente correlata alla necessità di difendersi dalle popolazioni indigene, e indaga sulle relazioni esistenti fra fortificazioni e tipologie insediative, soffermandosi, in seguito ad analizzare i vari subsistemi (fondazioni, muri, coronamenti, smaltimento delle acque) e componenti (porte e torri)…
Sistema di abilitazione selettiva e disabilitazione di sicurezza per moduli fotovoltaici
2008
A numerical approach for the modelling of forming limits in hot incremental forming of AZ31 magnesium alloy
2021
AbstractMagnesium alloys, because of their good specific material strength, can be considered attractive by different industry fields, as the aerospace and the automotive one. However, their use is limited by the poor formability at room temperature. In this research, a numerical approach is proposed in order to determine an analytical expression of material formability in hot incremental forming processes. The numerical model was developed using the commercial software ABAQUS/Explicit. The Johnson-Cook material model was used, and the model was validated through experimental measurements carried out using the ARAMIS system. Different geometries were considered with temperature varying in a…
Process Mechanics in Friction Stir Welding of Magnesium Alloys: Experimental and Numerical Analysis
2012
On the friction stir welding of titanium alloys: Experimental measurements and FEM model fine tuning
2012
Friction Stir Welding (FSW) is a solid state welding process patented in 1991 by TWI; initially adopted to weld aluminum alloys, is now being successfully used also for magnesium alloys, copper and steels. Recently, research is focusing on titanium alloys thanks to the high interest that such materials are getting from the industry as welding of titanium alloys by traditional fusion welding techniques presents several difficulties due to high material reactivity resulting in bonding with oxygen, hydrogen, and nitrogen with consequent embrittlement of the joint. In this way FSW represents a cost effective and high quality solution. The study of the temperatures reached at the varying of the …