671 research outputs found
Sviluppo di un codice di simulazione per la valutazione tecnica ed economica di un sistema di cogenerazione con microturbina a gas
No full text
Technical and economic aspects of municipal Energy planning
No full textThe present paper analyzes the technical and economic aspects of municipal energy planning, assessing the contribution
coming from different energy-saving measures in terms of greenhouse gas (GHG) emission reduction,
and estimating the local authorities’ investment necessary to foster climate change mitigation. Results are based
on three municipal energy plans developed for urban areas located in Marche Region with a number of inhabitants
ranging from 5,000 to 100,000. Different aspects of municipal energy management connected to urban
size have been investigated. The public administration role has been analyzed in detail in order to identify the
determinant factors for municipal energy market involvement
Distributed generation and trigeneration: energy saving opportunities in Italian supermarket sector
No full textThis paper presents an analysis of the potential for introducing distributed generation systems in the
supermarket sector in the light of Italian legislation (inasmuch as concerns tax incentives and regulations)
with a view to arriving at some generally applicable criteria. The energy users in question are
characterized by a strong demand for energy for refrigeration for food preservation and for ambient
air-conditioning during the summer.
This makes supermarkets particularly suitable for trigeneration applications with the prime mover
coupled with absorption systems. This study analyses the feasibility of implementing trigeneration systems
for the combined production of electricity and ambient heating and air-conditioning energy or,
alternatively, for the combined generation of electrical energy and refrigeration for the preservation of
food. Finally, the hypothesis of combining trigeneration systems with photovoltaic systems aimed at
maximizing the energy saving achievable was also considered. This paper analyses the various technologies
from a technical, economic and environmental standpoint, enabling advantages and disadvantages
to be identified in relation to a real case
Local authorities in the context of energy and climate policy
No full textSeveral measures to boost the energy system towards a low-carbon future can be planned and implemented by local authorities, such as energy-saving initiatives in public buildings and lighting, information campaigns, and renewable energy pilot projects. This work analyzes the public administration's role in energy and climate policies by assessing carbon-lowering measures for properties and services managed directly by local governments in central Italy.
Both short- and long-term schemes were considered in the analysis of local authority energy strategies. The MARKAL-TIMES energy model was applied to long-term energy planning to assess the effect of low-carbon initiatives on public-sector energy consumption up to 2030. Two energy scenarios were built, i.e. a Business As Usual (BAU) scenario based on current or soon-to-be-adopted national policies, and an Exemplary Public Scenario (EPS) including some further virtuous local policies suggested by local authorities.
Our results show that a 20% primary energy reduction can be achieved with respect to the baseline year by means of short-term energy policies (5-year time span), while a primary energy saving of about 30% can be reached with longer-term energy policies (25-year time span), even after taking the increase in energy demand into account.
This work goes to show the part that local governments can play in energy policy and their contribution to the achievement of climate goals
Caterina Colombini, o della cugina sedotta. Una ‘ricostruzione’ della figura di Caterina attraverso i testi
No full textIn this essay the author demonstrates that it is possible to “reconstruct” the figure of Caterina Colombini (1340?-1387) – Giovanni Colombini’s cousin – through a group of texts: the hagiography of Caterina, the letters sent to her by Giovanni Colombini and, finally, Giovanni’s biography written by Feo Belcari. The author divides his text into four parts: the first part analyzes the content of Caterina’s hagiography; the second examines the linguistic form of the hagiographic text; in the third, the author analyzes the latent meaning of the window, a symbolic place where Giovanni and Caterina converse on divine topics; in the last part, to conclude, the teachings that Giovanni gives to Catherine and her spiritual daughters – the Gesuate – are analyzed
Demand side management of the built environment for sustainable energy
No full textThe current electricity market, characterized by increasing energy demand and growing penetration of renewable energies, presents a number of challenges to grid operators and is moving toward the Smart Grid infrastructure which includes the Demand Side Management (DSM) concept. Due to the energy consumption involved, an interesting and promising field of application of DSM is the management of the electrically driven thermal systems in buildings. This study focuses on energy demand in buildings for heating and cooling produced by heat pumps (HP), that will hopefully have an increasing penetration in the field of room air-conditioning, given the potential improvement in energy efficiency achievable. Moreover heat pumps are seen as a promising technology for load management in the built environment, also coupled with Thermal Energy Storage (TES) systems to shift electrical loads on the basis of grid request. Main purpose of this paper is to analyze the DSM potential of heating and cooling loads in residential buildings while using heat pumps. Different building characteristics, plant configurations and DSM strategies will be considered
Evaluation of municipal energy planning contribution for the fulfilment of regional energy planning strategies
No full textDubrovnik, HR, September 2011 - Paper #095
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