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.   

Expert methods for assessing quality of railway rolling stock repair

2020 ◽  
pp. 3-7
Author(s):  
M.V. Polosin ◽  
◽  
A.D. Makarevich ◽  
A.A. Rogov ◽  
◽  
...  
Keyword(s):  
Rolling Stock ◽  
Railway Rolling Stock

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 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.

scholarly journals Increasing the Efficiency of Railway Transport by Improvement of Suspension of Freight Wagons

1970 ◽  
Vol 24 (6) ◽  
pp. 487-493 ◽  
Author(s):  
Dragan Petrović ◽  
Milan Bižić ◽  
Milomir Gašić ◽  
Mile Savković ◽  
Vladeta Gajić
Keyword(s):  
Suspension System ◽  
Rolling Stock ◽  
Economic Losses ◽  
Railway Transport ◽  
Railway Freight ◽  
Transport Organization ◽  
Technical Reliability ◽  
Railway Rolling Stock ◽  
Freight Wagons

Railway transport has a very important role in economy of every country. The efficiency of railway transport depends both on the quality of transport organization and on the technical reliability of the railway rolling stock. During operation of the railway freight wagons in the last years, a large number of breaks of suspension system elements have been noticed. This feature is especially reported at four-axle double wagon for coal transport (designated Fbd) and three-axle wagon for transport of cars (designated DDam). Frequent breaks of suspension system elements reduce the efficiency of transport and in some cases cause derailment of wagons and lead to large economic losses. In this paper, the causes of breakage of suspension on both wagons (Fbd and DDam) have been analyzed, but also the possibilities of how to resolve these problems, i.e. how to reduce them to a minimum or avoid them completely.

scholarly journals The impact of deformation in the zone of welded joints on the force action of the rolling stock on the track

2020 ◽  
Vol 79 (1) ◽  
pp. 9-16
Author(s):  
V. S. Kossov ◽  
O. G. Krasnov ◽  
M. G. Akashev
Keyword(s):  
Welded Joints ◽  
Welded Joint ◽  
Experimental Studies ◽  
Longitudinal Direction ◽  
Local Heat ◽  
Rolling Stock ◽  
Rolling Surface ◽  
Kolmogorov Smirnov ◽  
The Impact

The causes of deformation in the zone of welded joints are considered. Authors experimentally studied changes in hardness on the rolling surface of the rail in the longitudinal and transverse profiles within the thermally affected zone of the welded joint. It is established that the hardness of the rolling surface of the rail in the longitudinal direction in the thermally affected zone of the joint is uneven and is determined by the structures arising from the effects of the thermal cycles of welding and the quality of the local heat treatment. In this case, two "low spots" are clearly traced with a decrease in hardness to 290...300 HB and with a higher hardness up to 350 HB right in the welded joint. Experimentally investigated the change in the depth of the welded joint from the implemented tonnage. At the same time with strain gauge method, using the force method developed by N. N. Kudryavtsev, continuous changes in vertical forces when the wheels move along the welded joint zone were recorded. Average values of vertical forces from loaded cars were established. Experimental distributions of vertical forces were approximated by theoretical laws according to the Kolmogorov — Smirnov matching criterion. Recommendations are given on minimizing the harmful impact of rolling stock on the track in areas of lowering welded joints.The following conclusions were made.1.            Geometry of the joint irregularity is in the form of a W-shaped deformation with an influx of metal on the receiving rail and lowering on the directing rail. The width of the upper part of the deformation varies between 160...200 mm along the axis of the rail.2.            Deformation zone of the welded joint is a source of increased dynamic impact from the wheels of the rolling stock on the elements of the upper track structure. According to the results of experimental studies it was found that the greatest increase in dynamic effects was observed from locomotive wheels up to 45..               . 70 kN, maximum values reached 180...210 kN, from the wheels of loaded freight cars the values of vertical forces increased by 35..     .45 kN, maximum values reached 145...170 kN, from the wheels of empty cars increase dynamic impacts amounted to 14...16 kN, maximum values reached 32...36 kN.

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.

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.

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