scholarly journals Halving of consumption and energy efficiency of the “Mario Pagano” National boarding school in Campobasso

2021 ◽  
Vol 312 ◽  
pp. 02010
Author(s):  
Giada Romano ◽  
Francesco Cesare Lallo ◽  
Francesco Mancini
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Boarding School ◽  
Primary Energy ◽  
Global Scale ◽  
Reference Scenario ◽  
New Development ◽  
Reduce Emissions ◽  
Ecological Transition

In the national context, Italy with the Integrated National Plan for Energy and Climate (PNIEC) intends to achieve an indicative target of reducing consumption by 2030 equal to 43% of primary energy and 39.7% of final energy compared to the reference scenario of 2007 while with the National Recovery and Resilience Plan (PNRR), the ecological transition will have to be the basis of the new development model on a global scale. To start it up, it will be necessary to drastically reduce emissions of climate-altering gases in line with the objectives of the European Green Deal. Secondly, it will be necessary to improve the energy efficiency of production chains, civil settlements and public buildings and the quality of air in urban centres and water. In light of these ambitious objectives, particular attention is paid to existing buildings: this research has been focused on the is the National Boarding School “Mario Pagano”, an 8,700 m2 school built in 1899, located in the historical centre of Campobasso (Molise). The effects of the intervention proposals have been simulated in order to evaluate energy savings and the reduction of CO2 emissions. The research is also supported by an economic evaluation that prove the economic sustainability within a period of about 15 years.

scholarly journals Energy Saving for the Suburban Rolling Stock

2018 ◽  
Vol 7 (4.3) ◽  
pp. 361 ◽  
Author(s):  
Andriy Sumtsov ◽  
Anatoliy Falendysh ◽  
Nataliya Chyhyryk ◽  
Oleg Vasilenko
Keyword(s):  
Energy Efficiency ◽  
Thermal Imaging ◽  
Energy Savings ◽  
Local Heat ◽  
Heat Losses ◽  
Rolling Stock ◽  
Passenger Compartment ◽  
Sealing Layer ◽  
Railway Rolling Stock

This article is concerned with the problem of energy savings and rise of comfortableness of railway rolling stock. Done analysis has shown the insufficient paying attention to the energy efficiency of suburban rolling stock. In particular, to the problem of heat comfort for passengers. For this purpose, a procedure was carried out for the thermal audit of electric trains, taking into account the prevailing array of required indicators. To determine the sites of local heat losses, there was done the thermal-imaging inspection of the electrical train ER2 series during which it was determined the local sites of heat losses and entry of cold air. Besides the passenger compartment, there were inspected the outer body liner and driver's cabin. As a result of inspection of driver's cabin, it was found the bad quality of a sealing layer for side small windows from one side. On the basis of inspection, the recommendations for elimination of found irregularities were developed.   

Energy Efficiency of a Web and Database Server System

2014 ◽  
Vol 5 (2) ◽  
pp. 29-48 ◽  
Author(s):  
Jukka Kommeri ◽  
Felipe Abaunza ◽  
Marko Niinimaki ◽  
Peter Thanisch ◽  
Tapio Niemi
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Wait Time ◽  
Efficiency Evaluation ◽  
Database Application ◽  
Database Server ◽  
Server Software ◽  
Energy Efficiency Evaluation ◽  
Server System

Energy-efficiency of server hardware, web server software and databases has been widely studied. However, studies that combine these aspects are rare. In this paper the authors present an energy-efficiency evaluation of a web and database application. They concentrate on the following aspects: server BIOS and operating system energy optimization and “bursting” i.e. queuing requests and then executing them in bursts. The authors have used the bursting method with both a database application and a web plus database application. Their results indicate about 10% energy savings using this method. They analyse the model by statistical tools and present an equation to express the quality of service versus burst wait time relationship.

scholarly journals TAFILELT KSAR: BETWEEN TRADITION AND MODERNITY, AN EXPERIMENT OF ENERGY ENHANCEMENT HOUSING IN ALGERIA

2021 ◽  
pp. 1-8
Author(s):  
Benkechkache Imane
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
High Performance ◽  
Building Materials ◽  
Energy Savings ◽  
Return Time ◽  
Primary Energy ◽  
Conceptual Approach ◽  
Starting Point ◽  
Social Environmental

Energy is one of the common determinant factors related to social, environmental and economic problems, which can also contribute to their solution. Among sectors where studies could be done to reduce energy demand, is building. This latter is the largest primary energy consumer and responsible for more than 40% of total CO2 emissions. Therefore, improving energy efficiency in buildings represents an economic and ecological challenge. The built environment quality, with good insulation and high-performance building materials, constitutes the first step towards this aim. Yet, this is not enough to make buildings low energy consumption. But then again, a starting point for which, it is necessary to manage how it should be occupied and exploited. Improving energy efficiency of buildings involves several steps through which, coherent actions, will enable energy savings acting on different human and material parameters. The conceptual approach for improving energy efficiency is identical for residential and tertiary sectors. However, in practice this is different due to divergences related to: technical aspects; used tools; operating and maintenance costs and return time of investment. The purpose of this research is to investigate an example of Energy Enhancement housing in Tafilelt ksar in the M’zab valley in Algeria (an example of ecologic planning with modern habitat perfectly adapted to environment), with the objective of creating adaptable housing according to changing needs of future generations.

scholarly journals EXERGOECONOMIC APPROACH TO THE PROBLEMS OF ENERGY CONSUMPTION ASSESSMENT IN HOUSING AND COMMUNAL SERVICES OF UKRAINE

2021 ◽  
Vol 2 (37) ◽  
pp. 59-63
Author(s):  
I. Dolgopolov ◽  
V. Tuchin ◽  
D. Marchenko
Keyword(s):  
Energy Efficiency ◽  
Natural Gas ◽  
Water Supply ◽  
Energy Savings ◽  
Price Policy ◽  
Energy Flows ◽  
Just Price ◽  
The Given

An attempt to use the base thermodynamics and exergoeconomic aspects of decision tasks of energy efficiency and energy saving with the examples of in heat-, gas- and watersupply in housing and communal services of Ukraine is presented. The methodology of forming the analytical dependences of account and payment of the got and used heat is presented as a result of this approach. This system of account has the followings advantages: 1) the sum of payment takes into account not only an amount but also quality of energy flows; 2) efficiency of work of all elements of this system is taken into account.  The operating presently system of tariffs on natural gas does not take into account current composition of gas and exergy of gas. Dependence, which takes into account the real exergy of natural gas which is supplied, is offered in relation to the minimum exergy of natural gas, which is foreseen DSTU. At forming of cost of water-supply in dependence for determination of sum of payment for water is suggested to enter a constituent, which takes into account the exergy of stream of water, which influences the amount and pressure of the given water. Realization in practice of the exergyeconomic going near tariffs on energy which is consumed in housing and communal services of Ukraine allows from single power positions objectively to estimate efficiency of functioning of all elements of the systems heat-, gaz- and water-supplys. It allows practically to carry out market approach to forming of tariffs on heat-, gaz- and water-supply and to mobilize producers, suppliers and users of services, in this sphere of housing and communal services of Ukraine on an energy-savings and energy efficiency. It is necessary to expect that introduction of these principles has social influence because it is a step which unites the citizens of Ukraine in the decision of tasks of establishment of transparent and just price policy of the state in housing and communal services of Ukraine and improvements of situations with ecology in our country.

scholarly journals Implementation of Innovative Energy Saving Projects to Strengthen the Competitiveness of Domestic Enterprises

2021 ◽  
pp. 188-196
Author(s):  
Olha SOBKO ◽  
Ihor KRYSOVATYY ◽  
Svitlana SMEREKA
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Alternative Energy ◽  
Energy Savings ◽  
New Technologies ◽  
Energy Audit ◽  
Economic Relations ◽  
Alternative Energy Sources ◽  
Power Stations

The article deals with the features of innovative projects launch of the energy saving on the enterprises of Ukraine, the necessity of research of essence and specific of introduction of such projects is substantiated concerning the energy-savings on enterprises, their place in the system of economic relations is examined. Foreign experience of market of innovative projects introduction of the energy-saving is investigated, that is one of the basic component elements of effective competition which is beneficial in innovative activity of enterprises, which means the launch of innovative developments, new technologies, knowledge, information. The basic most effective districting over of territory of Ukraine is demonstrated, where realization of innovative projects of the energy efficiency introduction and energy-savings of sunny power stations and surface windy power stations is carried out. Considerable technically accessible potential of power mediums production of redintegrated energy and alternative types of fuel sources in Ukraine is revealed. The basic barriers over introduction of innovative projects in the market of energy-savings are shown, in particular: limited access to technologies and innovations, high cost of services in energy efficiency, lack of skilled specialists, sub-zero quality of suggestion of services in energy efficiency in the market etc. Attention is focused on using of project management for realization of innovative projects, as a basic tool of management, in particular to the energy management and energy audit, and their basic tasks on an enterprise are given. The basic strategic constituents regarding the development of fuel and energy complex of Ukraine and its competitiveness are pointed out, as well the use of alternative energy sources on a period to 2035, that is mentioned in operating Power strategy «Safety, energy efficiency, competitiveness». The mechanism of electric power production stimulation of iterated sources in Ukraine is demonstrated which means the «Green» price for the subjects of managing that produce power from the solar and wind energy.

RETROFITTING FOR IMPROVING ENERGY EFFICIENCY: THE EMBODIED ENERGY RELEVANCE FOR BUILDINGS' THERMAL INSULATION

2021 ◽  
pp. 1-15
Author(s):  
Sara Abd Alla ◽  
Vincenzo Bianco ◽  
Federico Scarpa ◽  
Luca A. Tagliafico
Keyword(s):  
Energy Efficiency ◽  
Thermal Insulation ◽  
Energy Savings ◽  
Primary Energy ◽  
Climatic Conditions ◽  
Embodied Energy ◽  
Building Stock ◽  
Insulation Materials ◽  
Energy Impact ◽  
The City

Abstract Envelope insulation is a well-known strategy to improve buildings' energy efficiency. This paper considers two archetypes of an apartment block typology largely diffused in the Italian building stock and evaluates the energy savings resulting from the application of three insulation materials: polyurethane foam, rock wool and resin bonded fibre-board. The energy requirements for winter heating and summer cooling are assessed with EnergyPlus and then compared to the embodied energy of the insulation materials. Hence, the energy and carbon paybacks are calculated, and a cost analysis is proposed to provide an insight on the market impact for the retrofit materials' choice. The apartment block model is analyzed in three main cities (Rome, Milan, Palermo) allowing to assess the climatic conditions impact in terms of minimization of primary energy consumption and environmental emissions. Simulations showed that the thermal insulation has a higher impact on winter heating and slightly affects the summer cooling requirement. In Milan, the refurbishment gains relevance as the energy and carbon payback periods are shorter than those of the city of Palermo characterized by a warmer weather. Considering the embodied energy impact, this method allows to estimate the maximum potential for energy savings in existing buildings and provides an estimation of achievable results in short-medium period.

Retrofitting for Improving Energy Efficiency: The Embodied Energy Relevance for Buildings’ Thermal Insulation

2020 ◽  
Author(s):  
Sara Abd Alla ◽  
Vincenzo Bianco ◽  
Federico Scarpa ◽  
Luca A. Tagliafico
Keyword(s):  
Energy Efficiency ◽  
Thermal Insulation ◽  
Energy Savings ◽  
Primary Energy ◽  
Climatic Conditions ◽  
Embodied Energy ◽  
Building Stock ◽  
Insulation Materials ◽  
Increase Energy Efficiency ◽  
Energy Impact

Abstract Thermal insulation is a well-known strategy to increase energy efficiency of buildings. This paper considers two archetypes of an apartment block typology largely diffused in the Italian building stock and evaluates the energy savings resulting from the application of three insulation materials: polyurethane foam, rock wool and resin bonded fibre-board. The energy requirements for winter heating and summer cooling are assessed with EnergyPlus and then compared to the embodied energy of the insulation materials. Hence, the energy and carbon paybacks are calculated, and a cost analysis is proposed to provide an insight on the market impact for the retrofit materials’ choice. The apartment block model is analyzed in three main cities (Rome, Milan, Palermo) allowing to assess the climatic conditions impact in terms of minimization of primary energy consumption and environmental emissions. Simulations showed that the thermal insulation has a higher impact on winter heating and slightly affects the summer cooling requirement. In Milan, the refurbishment gains relevance as the energy and carbon payback periods are shorter than those of the city of Palermo characterized by a warmer weather. Considering the embodied energy impact, this method allows to estimate the maximum potential for energy savings in existing buildings and provides an estimation of achievable results in short-medium period.

scholarly journals Energy and Economic Assessment of Energy Efficiency Options for Energy Districts: Case Studies in Italy and Egypt

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1012
Author(s):  
Francesco Calise ◽  
Francesco L. Cappiello ◽  
Maria Vicidomini ◽  
Jian Song ◽  
Antonio M. Pantaleo ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Energy Savings ◽  
Electric Energy ◽  
Economic Assessment ◽  
Primary Energy ◽  
Heat Pumps ◽  
Hot Water ◽  
Space Heating ◽  
District Heating System

In this research, a technoeconomic comparison of energy efficiency options for energy districts located in different climatic areas (Naples, Italy and Fayoum, Egypt) is presented. A dynamic simulation model based on TRNSYS is developed to evaluate the different energy efficiency options, which includes different buildings of conceived districts. The TRNSYS model is integrated with the plug-in Google SketchUp TRNSYS3d to estimate the thermal load of the buildings and the temporal variation. The model considers the unsteady state energy balance and includes all the features of the building’s envelope. For the considered climatic zones and for the different energy efficiency measures, primary energy savings, pay back periods and reduced CO2 emissions are evaluated. The proposed energy efficiency options include a district heating system for hot water supply, air-to-air conventional heat pumps for both cooling and space heating of the buildings and the integration of photovoltaic and solar thermal systems. The energy actions are compared to baseline scenarios, where the hot water and space heating demand is satisfied by conventional natural gas boilers, the cooling demand is met by conventional air-to-air vapor compression heat pumps and the electric energy demand is satisfied by the power grid. The simulation results provide valuable guidance for selecting the optimal designs and system configurations, as well as suggest guidelines to policymakers to define decarbonization targets in different scenarios. The scenario of Fayoum offers a savings of 67% in primary energy, but the associated payback period extends to 23 years due to the lower cost of energy in comparison to Naples.

scholarly journals Climate adaptation of listed buildings: an interaction between design, regulations and energy efficiency

2020 ◽  
Vol 172 ◽  
pp. 15003
Author(s):  
Arda Karasu ◽  
Yaser Hantouch ◽  
Claus Steffan
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Climate Adaptation ◽  
Primary Energy ◽  
Climatic Conditions ◽  
Cfd Simulations ◽  
Intermediate Space ◽  
Simulation Based ◽  
Climate Envelope ◽  
The One

Energy retrofitting of listed buildings requires a rethink as it is economically and technically complicated to retrofit. The Technische Universität Berlin has 47 buildings with a total net floor area above 500.000 m2 in its central campus, and 60% of them are listed. In Germany, optimizing the energy efficiency of such buildings has not to fulfill the requirements of the energy efficiency regulations. On the one hand, this situation is not corresponding to the national objectives regarding climate adaptation. On the other hand, they have to be retrofitted because of issues like poor energy efficiency and user comfort, and not privileged with special regulations. However, instead of changing the regulations, it is possible to solve the problem by changing the way of thinking. In this regard, rather than retrofitting such buildings directly, a new approach has been developed where the surrounding climatic conditions are optimized. Hereby, a simulation-based concept has been developed with an external transparent envelope. This “climate envelope” creates an intermediate space between outdoor and indoor, where through controlled air movement and passive solar gains, the balance in seasonal energy efficiency can be kept economically without any implementation on the buildings according to the building thermal and CFD simulations. This overall approach activates the yet not exploited capacity of energy savings by listed buildings using intelligent design and saves up to 30% more of primary energy.

Energy-Efficient Query Processing in a Combined Database and Web Service Environment

2018 ◽  
pp. 62-88
Author(s):  
Marko Niinimäki ◽  
Felipe Abaunza ◽  
Tapio Niemi ◽  
Peter Thanisch ◽  
Jukka Kommeri
Keyword(s):  
Energy Efficiency ◽  
Energy Savings ◽  
Wait Time ◽  
Web Database ◽  
Industrial Grade ◽  
Server Software ◽  
System Energy ◽  
Energy Efficiency Evaluation ◽  
Efficient Query Processing

The energy-efficiency of server hardware, web server software, and databases has been widely studied. However, studies that combine these aspects are rare. In this chapter, the authors present an energy-efficiency evaluation of a web/database application in a Windows/IIS/MSSQL environment running on an industrial grade Intel server. Moreover, they provide a wide overview of related research and technologies. Researchers have noticed that despite energy-saving technologies, energy consumption of data centers is still growing. To resolve this dilemma, the authors explore the background and propose concrete solutions. They concentrate on the following aspects: server BIOS/operating system energy optimization (limited impact) and “bursting” (i.e., queuing requests and then executing them in bursts). The authors have used the bursting method with both database and web/database applications. Their results indicate about 10% energy savings using this method. The authors analyse the model using statistical tools and present an equation to express the quality of service vs. burst wait time relationship.

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