scholarly journals Determining heat losses in university educational premises and developing an algorithm for implementing energy-saving measures

2021 ◽  
Vol 6 (8 (114)) ◽  
Author(s):  
Marina Savchenko-Pererva ◽  
Oleg Radchuk ◽  
Ludmila Rozhkova ◽  
Hanna Barsukova ◽  
Oleksandr Savoiskyi
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Heat Losses ◽  
Thermal Imager ◽  
State Budget ◽  
Third Stage ◽  
Preparatory Stage ◽  
The Difference ◽  
The Right ◽  
The Cost

This paper gives examples of the implementation of energy-saving measures in public premises. The introduction of energy-saving measures at enterprises significantly reduces the fixed component of industrial expenditures. As a rule, educational institutions, for example, public premises, are financed from the state budget, and saving money on utilities will enable redirecting finances to the development of the university’s educational and scientific base. Thus, the main purpose of implementing such measures is to reduce the cost of maintaining buildings. The measures are divided into three stages. At the first preparatory stage, the problem elements of a building and communications, which require the introduction of energy-saving measures using a special Fluke Ti25 device, are identified. Problem elements of the building structure were determined by complete scanning of the ceiling, walls, and floor with the help of a thermal imager. A large (more than 10 %) difference between indoor air temperature and the temperature of the building element indicates a problem element. The research method is thermographic. The study contains an example of scanning the wall of the premises. The temperature difference between the left and the right sides of the wall is 2.6 °C (the difference with the room temperature is 21 %). This indicates significant heat losses through the wall. At the second stage of information processing, measures to reduce energy consumption were determined. At the third stage of the introduction of energy-saving measures, the measures that directly affect the energy consumption of a building and effective functioning of communications were implemented. The practical relevance of the study is to obtain results and practical recommendations that can be applied in practice to improve the energy efficiency of premises and buildings.

scholarly journals Analysis of the electric energy consumption components for mine train traction

2019 ◽  
Vol 294 ◽  
pp. 01001 ◽  
Author(s):  
Serhii Arpul ◽  
Viktor Artemchuk ◽  
Mykola Babyak ◽  
Viacheslav Vasilyev ◽  
Hennadii Hetman ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Energy Intensity ◽  
Electric Energy ◽  
Rolling Stock ◽  
List Type ◽  
Opencast Mining ◽  
Study Results ◽  
Transportation Process ◽  
The Cost

The paper considers the issues of reducing the energy intensity of transportation at opencast mining enterprises, the relevance of which has now increased due to the rise in the cost of fuel and energy resources. It presents the study results concerning the cost structure of the electricity consumed by electric mine transport, which form the basis for the development of technical and operational measures to reduce the energy intensity of the transportation process. It is shown that the work to reduce the electricity consumption for mined rock transportation should be aimed at: Reduction of losses in the power circuits of the traction rolling stock due to the use of more advanced electric rolling stock and regulation of the degree of utilization of the installed traction power; Introduction of new contact materials for electrical circuits with the lowest possible resistivity, including for current collector plates; Introduction of measures to reduce energy consumption for power supply of auxiliary circuits; Development and implementation of rational train control techniques. The introduction of energy-saving measures should include the development and application of effective methods for calculating individual norms of energy consumption and incentives for energy saving of the employees involved in the organization of the transportation process.

Energy Consumption and Economic Analysis to Residential Building Meeting the Criterion of 65% Energy Saving in Zhangjiakou

2011 ◽  
Vol 225-226 ◽  
pp. 239-242 ◽  
Author(s):  
Hong Lei Ma ◽  
Jian Hui Niu
Keyword(s):  
Energy Consumption ◽  
Economic Analysis ◽  
Energy Saving ◽  
Residential Building ◽  
Building Energy ◽  
Simulation Software ◽  
Design Standard ◽  
Third Stage ◽  
Building Energy Saving ◽  
Saving Effect

An energy saving residential building in Zhangjiakou was took as research object, which was designed and constructed according to the criterion of 65% energy saving of the third stage, utilizing simulation software Dest, which was developed by Qinghua University, energy consumption simulation and economic analysis were done to the building. The results show that compared with the former residence which was built according to the non-energy saving design, the implementation of new design standard for building energy saving can not only achieve better energy saving effect, but also its payback period is short, so the new design standard for building energy saving is worth spreading.

scholarly journals Distributed Nonlinear Model Predictive Control for Connected Autonomous Electric Vehicles Platoon with Distance-Dependent Air Drag Formulation

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5122
Author(s):  
Bianca Caiazzo ◽  
Angelo Coppola ◽  
Alberto Petrillo ◽  
Stefania Santini
Keyword(s):  
Energy Consumption ◽  
Model Predictive Control ◽  
Energy Saving ◽  
Predictive Control ◽  
Electric Vehicles ◽  
Nonlinear Model ◽  
Nonlinear Model Predictive Control ◽  
Air Drag ◽  
Cooperative Driving ◽  
The Cost

This paper addresses the leader tracking problem for a platoon of heterogeneous autonomous connected fully electric vehicles where the selection of the inter-vehicle distance between adjacent vehicles plays a crucial role in energy consumption reduction. In this framework, we focused on the design of a cooperative driving control strategy able to let electric vehicles move as a convoy while keeping a variable energy-oriented inter-vehicle distance between adjacent vehicles which, depending on the driving situation, was reduced as much as possible to guarantee air-drag reduction, energy saving and collision avoidance. To this aim, by exploiting a distance-dependent air drag coefficient formulation, we propose a novel distributed nonlinear model predictive control (DNMPC) where the cost function was designed to ensure leader tracking performances, as well as to optimise the inter-vehicle distance with the aim of reducing energy consumption. Extensive simulation analyses, involving a comparative analysis with respect to the classical constant time headway (CTH) spacing policy, were performed to confirm the capability of the DNMPC in guaranteeing energy saving.

scholarly journals KEY DIRECTIONS OF ENERGY SAVING IN AGRICULTURE

2020 ◽  
pp. 34-42
Author(s):  
Vasyl Hradovyi
Keyword(s):  
Energy Consumption ◽  
Energy Balance ◽  
Energy Saving ◽  
Energy Use ◽  
Energy Resources ◽  
Positive Energy ◽  
Environmental Friendliness ◽  
Relevant Today ◽  
The Cost ◽  
Reducing Energy

Introduction. The problem of energy saving becomes more and more relevant in the conditions of organizational and economic relations transformation in agriculture. It is connected with intensive technologies used in the agriculture, with the cost and availability of different energy types. It affects the cost of production, its environmental friendliness and the achievement of sustainable development goals. Methods. The article talks about theoretical provisions related to the application of agro-technological operations in agriculture, including their economic and environmental components. Monographic, abstract and logical methods, as well as methods of comparison, generalization, and analysis, are used. Results. It is established that agriculture, unlike other branches of the economy, is not only a consumer of energy, but also generates it as a finished product. This uses anthropotechnogenic energy, as well as solar and soil energy. It is emphasized that the issue of achieving positive energy balance in agriculture is relevant today and needs to be solved by reducing energy consumption from non-renewable sources. It is determined that energy saving in agriculture involves the application of legislative, organizational, scientific, productional, technical and economic measures. As a result, the balanced energy consumption, rational energy use, optimization of energy saving management through organizational and economic mechanism and reducing energy consumption should occur. It is proved that the directions of energy saving in the agricultural sphere can be determined by the processes of its circulation and manifest itself in the form of providing access to energy resources, creating competitive conditions in the energy supply market, diversifying energy resources, increasing the efficiency of technical means. Considering the tools of energy saving achievement, it is determined that its main areas are: management, energy, technology, technical and selectional measures. Together their action is aimed at reducing energy consumption of fossil origin and using the solar and soil energy optimally. Discussion. The results of the study serve as a theoretical basis for further research in the energy saving field of agriculture, which can be implemented to substantiate comprehensive actions aimed at reducing energy consumption, as well as to develop an organizational and economical mechanism capable of achieving the highest level of energy saving. Keywords: energy saving, energy efficiency, agriculture, energy balance, directions of energy saving.

Dynamic Rightsizing with Quality-Controlled Algorithms in Virtualization Environments

2011 ◽  
Vol 3 (2) ◽  
pp. 29-43 ◽  
Author(s):  
Ming-Jeng Yang ◽  
Chin-Lin Kuo ◽  
Yao-Ming Yeh
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Power Management ◽  
Time Complexity ◽  
Queuing Theory ◽  
Virtual Machines ◽  
Management Systems ◽  
Cloud Environment ◽  
The Right ◽  
Complexity Increase

Virtualization and partitioning are the means by which multiple application instances can share and run multiple virtual machines supported by a platform. In a Green Cloud environment, the goal is to consolidate multiple applications onto virtual machines associated by fewer servers, and reduce cost and complexity, increase agility, and lower power and cooling costs. To make Cloud center greener, it is beneficial to limit the amount of active servers to minimize energy consumption. This paper presents a precise model to formulate the right-sizing and energy-saving mechanism, which not only minimizes energy consumption of the server but also maintains a service quality through the Mt/M/Vt strategy of queuing theory. The authors map the complicated formula of the energy-saving mechanism to an approximation equation and design the fast decidable algorithms for calculating the right size of virtual machines in constant time complexity for power management systems.

Simulation Analysis of Building Energy Consumption with Different Surface-Volume-Ratio and Envelop Performance of Rural Dwellings

2014 ◽  
Vol 953-954 ◽  
pp. 1578-1583
Author(s):  
Tian Yu Xiong ◽  
Xiu Zhang Fu ◽  
Jian Dong
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Simulation Analysis ◽  
Volume Ratio ◽  
National Standard ◽  
Heating And Cooling ◽  
Detached House ◽  
The Difference ◽  
Saving Effect ◽  
The Impact

Rural dwellings have a big difference in the appearance and envelope. Living form is changing a lot from detached house to the apartment in multi-story apartments. These changes affect building’s energy consumption consisting of heating and cooling. This paper focuses on the impact of the energy consumption affected by different surface volume ratios, simulation analysis showed a general argument of the difference. And for the same house type, this paper also compares the energy-saving effect of different envelop performances, Specific contents are the heat transfer coefficient and shading ways. Simulation results identified that SVR has influence on different types of houses, the energy consumption of row houses can be saved more than 30% compared with detached houses. Envelope performance also affects energy consumption and the national standard is recommended for the energy saving and the comfort.

scholarly journals Hungarian spirits palinka as a “hungaricum” II. The effect of tax-free production in Hungary and in the European Union

2016 ◽  
Vol 10 (4-5) ◽  
pp. 137-144
Author(s):  
Imre Milán Harcsa
Keyword(s):  
Election Campaign ◽  
The European Union ◽  
Eu Accession ◽  
State Budget ◽  
Excise Duty ◽  
Previous Election ◽  
The Difference ◽  
Jel Code ◽  
The Right ◽  
Excise Duties

Palinka is a traditional Hungarian fruit spirit prepared exclusively by the distillation of fruit mash or fruit pulp. As an alcohol product, it is subject to the Act CXXVII of 2003 on Excise Duties and Special Regulations on the Distribution of Excise Goods amended several times. The present government of Hungary pledged to grant the right of free palinka distillation again in the previous election campaign. As of 27 September 2010, the excise duty of subcontract-distillation was repealed, and the previously non-existent “official” home distillation was introduced, which resulted in explicit revenue losses for the state budget. The modification of the law mentions distillate instead of the word palinka. The difference between the two notions will be discussed in the present study. Presumably, lawmakers did not consider the fact that at the time of Hungary’s EU accession we entered into an agreement stipulating that the tax on subcontract-distillation should not be lower than 50% of the tax on alcohol products. Having been unable to agree on a solution to the problems in question, Brussels launched an infringement procedure against Hungary. Finally, Hungary was convicted; therefore, tax exemption or palinka distillation shall be ceased. This regulation came into force on 01 January 2015. The reactions of those who used the services of subcontract distillation were negative; turnover plunged by approximately 85% compared to the year of 2014. The present research will present the amendments concerning home distillers due from 2016 and the elements of the bill intended to amend the Act LXXIII. of 2008. JEL CODE: K34, L51, L66

Dynamic Rightsizing with Quality-Controlled Algorithms in Virtualization Environments

2013 ◽  
pp. 122-137
Author(s):  
Ming-Jeng Yang ◽  
Chin-Lin Kuo ◽  
Yao-Ming Yeh
Keyword(s):  
Energy Consumption ◽  
Service Quality ◽  
Energy Saving ◽  
Time Complexity ◽  
Queuing Theory ◽  
Virtual Machines ◽  
Cloud Environment ◽  
Lower Power ◽  
The Right ◽  
Complexity Increase

Virtualization and partitioning are the means by which multiple application instances can share and run multiple virtual machines supported by a platform. In a Green Cloud environment, the goal is to consolidate multiple applications onto virtual machines associated by fewer servers, and reduce cost and complexity, increase agility, and lower power and cooling costs. To make Cloud center greener, it is beneficial to limit the amount of active servers to minimize energy consumption. This paper presents a precise model to formulate the right-sizing and energy-saving mechanism, which not only minimizes energy consumption of the server but also maintains a service quality through the Mt/M/Vt strategy of queuing theory. The authors map the complicated formula of the energy-saving mechanism to an approximation equation and design the fast decidable algorithms for calculating the right size of virtual machines in constant time complexity for power management systems.

Improve the Condition of the Energy Consumption of the Refinery Based on the Exergy Theory

2012 ◽  
Vol 260-261 ◽  
pp. 169-174
Author(s):  
Mou Jia ◽  
Xiao Zhong Song
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Quality Indicators ◽  
Energy Resources ◽  
Save Energy ◽  
The Right

People used to evaluate the energy consumption of the refineries in the quantity respect. There is a need to add quality indicators in the evaluation indicators. The energy consumption indicators about the energy quality are discussed in this paper. And the indicators were used in evaluating the performance of a realistic energy-saving-project. The result shows that choosing appropriate energy with the right quality can save energy resources.

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