scholarly journals Increasing the energy efficiency of the city-forming organizations of ferrous metallurgy

2021 ◽  
Vol 284 ◽  
pp. 01006
Author(s):  
Kymbat Kunanbaeva ◽  
Shakizada Niyazbekova ◽  
Symbat Olzheken ◽  
Sergey Ryabichenko
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Ferrous Metallurgy ◽  
Energy Intensity ◽  
High Energy ◽  
Energy Resources ◽  
Social Significance ◽  
High Concentration ◽  
The City

The issues of increasing the energy efficiency of the city-forming organizations of ferrous metallurgy are considered in this paper. Ferrous metallurgy is characterized by a high concentration of city-forming organizations, high social significance, and high energy intensity. The paper studies the issues of energy consumption of the city-forming organizations of ferrous metallurgy, highlights the directions for increasing the efficiency of the use of energy resources.

scholarly journals EVALUATION OF ENERGY EFFICIENCY OF MACHINE-BUILDING ENTERPRISES ON THE BASIS OF THE INTEGRATED INDICATOR

2021 ◽  
Author(s):  
Yevheniia Makazan ◽  
Oleksandr Veremeenko
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Intensity ◽  
World Market ◽  
High Energy ◽  
Machine Building ◽  
Energy Resources ◽  
Resource Saving ◽  
The World ◽  
Building Enterprises

Summary. One of the main factors in ensuring the energy security of a manufacturing enterprise is to reduce the energy intensity of manufactured products. The world's leading countries have significantly reduced energy consumption in recent years. And domestic enterprises, today, remain one of the least energy efficient in the world. A significant part of energy resources is spent due to depreciation of fixed assets and obsolete equipment. Today, the economical and efficient use of energy is one of the main issues that need to be solved. After all, the lower the level of use of energy resources, the more efficient the production, and the more competitive the products on the world market. Therefore, in order to assess the level of energy efficiency, we have systematized economic indicators that characterize the use of energy resources in the enterprise. Based on them, the structure of an integrated indicator of the level of energy efficiency of a machine-building enterprise is proposed. The structure includes four groups, which in turn include from two to four indicators. The first group of indicators characterizes the energy efficiency of the enterprise, the second - innovative activities in the direction of energy efficiency, the third - investment activities, the fourth - the socio-environmental consequences of the introduction of resource-saving technologies. An algorithm for determining the level of energy efficiency of machine-building enterprises based on the principles of systems analysis, which is based on integrated assessment, is also proposed. The implementation of the proposed algorithm will determine the level of energy efficiency of the enterprise and identify possible ways to reduce energy consumption. The proposed algorithm was tested at four machine-building enterprises of the Zaporizhia region and the obtained results were substantiated. It is established that the level of energy efficiency of the studied machine-building enterprises is very low. Which indicates the irrational use of energy and, accordingly, the very high energy intensity of the products.

scholarly journals Statistical Assessment of Energy Efficiency of Production and Consumption of Energy Resources in Ukraine

2017 ◽  
pp. 42-52
Author(s):  
A. Yu. Deina
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Natural Gas ◽  
Energy Intensity ◽  
Energy Resources ◽  
Energy Services ◽  
Low Level ◽  
Production And Consumption ◽  
Energy Independence ◽  
High Level

Energy independence of the country - one of the key links of the economy policy of many countries, including Ukraine, which full high-quality functioning of economy depends on. Full functioning of all economic institutes is possible only at reliable providing of fuel and energy resources. Economy life in general fades without skillful and rational use of energy resources. One of the main objectives of sustained economic growth and ensuring energy independence is connected with need of achievement of high, competitive level of efficiency of use of fuel and energy resources. Complex assessment of efficiency of production and consumption of energy resources provides use of a set of the indicators characterizing versatility and complexity of energy efficiency category. The method of multidimensional average has been used for calculation of complex assessment of energy efficiency, at the same time the following indicators have been chosen: energy intensity of GDP, export and import of energy resources, production and consumption of energy resources, investments into the energy complex, oil prices, tariffs for natural gas and the electricity for the population, a share of natural gas in the structure of energy consumption and so on. Complex assessment of efficiency of production and consumption of energy resources is executed on two blocks - for producers and for consumers (population). Extremely low level of energy efficiency for both producers and consumers (population) of energy services during 2010-2016 is observed. At the same time factors which influence the low level of integrated assessment of energy efficiency of production and consumption of energy resources are revealed. Achievements of the actual levels of integrated coefficients of energy efficiency substantially depended recently on introduction of extensive factors of development. Such situation has negative effect on achievement of energy independence of Ukraine. The current state of efficiency of production and consumption of energy resources is characterized by existence of a wide range of problems. It is possible to distinguish the lack of the principles of resource-saving of producers and economical use at consumers of energy services/ It results to very high level of energy consumption, the high level of energy intensity, the need to import of fuel and energy resources from other countries because of insufficiency of own production, the low level of income of consumers and groundlessness of increase in tariffs for energy services that promotes increase in level of debt of the population for the provided services and an unprofitable financial condition of the enterprises of the energy complex.

scholarly journals Projeto arquitetônico para a cidade de Catalão/GO: diretrizes para a zona bioclimática 6

2017 ◽  
Vol 14 (1) ◽  
Author(s):  
Débora Adiane Borges ◽  
Antover Panazzolo Sarmento ◽  
Gabriel Bernardes de Carvalho
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Architectural Design ◽  
Residential Buildings ◽  
High Energy ◽  
Bioclimatic Zone ◽  
Maximum Comfort ◽  
The City ◽  
Solar Orientation ◽  
High Energy Consumption

O conforto dos usuários de um ambiente costuma estar atrelado a um alto consumo de energia constituindo um possível problema ambiental. A bioclimatologia é uma das táticas utilizadas para reduzir o consumo de energia com máximo conforto para os usuários através do projeto arquitetônico. Existem normas e diretrizes que especificam estratégias de desempenho térmico, entre elas, a NBR 15220 (ABNT, 2005) é uma norma brasileira que apresenta recomendações para diferentes regiões e zonas bioclimáticas do país. Além dela, existe a NBR 15575 (ABNT, 2013), a Portaria n° 18 de 2012 (RTQ-R: Regulamento Técnico da Qualidade para o Nível de Eficiência Energética em Edificações Residenciais) e o Selo Casa Azul. Este trabalho avaliou as diretrizes construtivas de todas essas publicações para a Zona Bioclimática 6 (ZB6), onde se encontra a cidade de Catalão, objetivando encontrar as melhores estratégias arquitetônicas que podem ser implantadas nas casas de classe média dessa cidade. Utilizou-se o software DLN e dados do INMET para avaliação da orientação solar e dos ventos verificando as recomendações mais pertinentes para Catalão e região. Entre os resultados encontrados estão os tipos de vedações e coberturas, estratégias de condicionamento e posicionamento e dimensionamento das aberturas. A principal contribuição deste estudo foi identificar as características necessárias a um projeto arquitetônico, que atende a bioclimatologia, possibilitando maior eficiência energética para a ZB6, com destaque à cidade de Catalão. Abstract The comfort of users of an environment is usually linked to a high energy consumption, which constitutes a true environmental problem. The bioclimatology is one strategy used to reduce energy consumption with maximum comfort to users through the architectural design. There are standard and guidelines that specify thermal performance strategies, including the NBR 15220 (ABNT, 2005) is a Brazilian standard that makes recommendations for different regions and bioclimatic zones of the country. Beyond it, there is the NBR 15575 (ABNT, 2013) Portaria n°. 18 of 2012 (RTQ-R: Quality Technical Regulation for Energy Efficiency of Residential Buildings in level) and the Blue House Seal. This work assessed the constructive guidelines of all these publications to the bioclimatic zone 6, where it is the city of Catalão, aiming at finding the best architectural strategies that can be deployed in middle-class houses of this city. It was used the DLN software and INMET data for evaluation of solar orientation and wind orientation looking at the most relevant recommendations to Catalão and region. Some results are the types of wall and cover, conditioning strategies and positioning and sizing of the openings. The work contributes to identify the characteristics necessary for an architectural project, which attends to bioclimatology, allowing greater energy efficiency for ZB6, with emphasis on the city of Catalão.

scholarly journals The forecast of total technological energy intensity of ferrous metallurgy products of Ukraine according to the production schemes till 2040

2021 ◽  
Vol 2021 (2) ◽  
pp. 44-52
Author(s):  
G.O. Kuts ◽  
◽  
O.I. Teslenko ◽  
Keyword(s):  
Energy Consumption ◽  
Ferrous Metallurgy ◽  
Structural Changes ◽  
Energy Intensity ◽  
Raw Materials ◽  
Coke Oven ◽  
Energy Resources ◽  
Converter Steel ◽  
Pig Iron ◽  
Coke Oven Gas

The perspective development of ferrous metallurgy of Ukraine for the period up to 2040 is considered. This development will take place due to structural changes of production schemes and technological measures with more effective characteristics of energy resources, energy carriers, and raw materials that directly influence the energy intensity of metallurgical products. The existing energy intensity calculations techniques were advanced and the total technological energy intensity of ferrous metallurgy products was calculated. Comparison of indicators of total technological energy intensity of final products of ferrous metallurgy (rolled metal) showed that rolled products produced by the latest energy-efficient technological schemes, which are projected to be implemented by 2040, will reduce total technological energy intensity up to 20% less than similar technological schemes used since 2017. For example, the total technological energy consumption of rolled billets of oxygen-converter steel will decrease by 17.2% (in terms of physical volume in the forecasted 2040 will be 862.293 kg c.e./t compared to the base 2017 – 1042.044 kg c.e./t), scrap process steel by 8.9% (respectively 923.999 kg c.e./t and 1014.120 kg c.e./t) and electric arc steel by 20% (703.292 kg c.e./t and 878.913 kg c.e./t). Regarding coke production, the total technological energy consumption of coke is projected to decrease by 24.0%: in 2040 it will be 210.040 kg c.e./t (in the base year 2017 it is equal to 244.585 kg c.e./t), and coke oven gas by 16.0%. , 4% (respectively 33.468 kg c.e./t and 38.72 kg c.e./t). The analysis of the role of components of energy intensity of products, namely for such products as iron ore, blast furnace coke, coke oven gas, and pig iron was made. The main components are energy resources, the share of which in the energy intensity of products is from 60 to 90%, and for other products, it is a raw material, the shares of which are within the same ranges. The main component in the structure of the formation of the total technological energy consumption of rolled products is the initial energy consumption of raw materials, the value of which is in the range of 90–92%. Keywords: technological energy intensity, structural changes, technological measures, energy resources, raw materials, pig iron, steel, rolled products

scholarly journals Influence of Population Income on Energy Consumption for Heating and Its CO2 Emissions in Cities

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4531
Author(s):  
Pedro J. Zarco-Periñán ◽  
Irene M. Zarco-Soto ◽  
Fco. Javier Zarco-Soto ◽  
Rafael Sánchez-Durán
Keyword(s):  
Energy Consumption ◽  
Co2 Emissions ◽  
Economies Of Scale ◽  
High Energy ◽  
Energy Resources ◽  
Policy Makers ◽  
Energy Utilities ◽  
The Impact ◽  
The City ◽  
High Energy Consumption

As a result of the increase in city populations, and the high energy consumption and emissions of buildings, cities in general, and buildings in particular, are the focus of attention for public organizations and utilities. Heating is among the largest consumers of energy in buildings. This study examined the influence of the income of inhabitants on the consumption of energy for heating and the CO2 emissions in city buildings. The study was carried out using equivalized disposable income as the basis for the analysis and considered the economies of scale of households. The results are shown per inhabitant and household, by independently considering each city. Furthermore, to more clearly identify the influence of the population income, the study was also carried out without considering the influence of the climate. The method was implemented in the case of Spain. For this purpose, Spanish cities with more than 50,000 inhabitants were analyzed. The results show that, both per inhabitant and per household, the higher the income of the inhabitants, the greater the consumption of energy for heating and the greater the emissions in the city. This research aimed to help energy utilities and policy makers make appropriate decisions, namely, planning for the development of facilities that do not produce greenhouse gases, and enacting laws to achieve sustainable economies, respectively. The overall aim is to achieve the objective of mitigating the impact of emissions and the scarcity of energy resources.

scholarly journals Energy Consumption Analysis and Characterization of Healthcare Facilities in the United States

Energies ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3775 ◽  
Author(s):  
Khaled Bawaneh ◽  
Farnaz Ghazi Nezami ◽  
Md. Rasheduzzaman ◽  
Brad Deken
Keyword(s):  
United States ◽  
Energy Consumption ◽  
Energy Intensity ◽  
The United States ◽  
High Energy ◽  
Total Energy Consumption ◽  
Healthcare Facilities ◽  
Energy Consumption Analysis ◽  
Consumption Data ◽  
End Use

Healthcare facilities in the United States account for 4.8% of the total area in the commercial sector and are responsible for 10.3% of total energy consumption in this sector. The number of healthcare facilities increased by 22% since 2003, leading to a 21% rise in energy consumption and an 8% reduction in energy intensity per unit of area (544.8 kWh/m2). This study provides an analytical overview of the end-use energy consumption data in healthcare systems for hospitals in the United States. The energy intensity of the U.S. hospitals ranges from 640.7 kWh/m2 in Zone 5 (very hot) to 781.1 kWh/m2 in Zone 1 (very cold), with an average of 738.5 kWh/m2. This is approximately 2.6 times higher than that of other commercial buildings. High energy intensity in the healthcare facilities, particularly in hospitals, along with energy costs and associated environmental concerns make energy analysis crucial for this type of facility. The proposed analysis shows that U.S. healthcare facilities have higher energy intensity than those of most other countries, especially the European ones. This necessitates the adoption of more energy-efficient approaches to the infrastructure and the management of healthcare facilities in the United States.

scholarly journals Understanding the Incremental Impact of Built Environment on Climate Change of Metropolitan City Karachi

2020 ◽  
Vol 39 (4) ◽  
pp. 678-685
Author(s):  
Nimra Kanwal ◽  
Nuhzat Khan
Keyword(s):  
Climate Change ◽  
Energy Consumption ◽  
Residential Buildings ◽  
Building Design ◽  
High Energy ◽  
Metropolitan City ◽  
Green Area ◽  
The World ◽  
The Impact ◽  
The City

Buildings are the most important part of development activities, consumed over one-thirds of the global energy. Household used the maximum energy around the world, likewise in Pakistan residential buildings consumed about half of total energy (45.9% per year). The study aims to analyze the impact of building design on climate of Metropolitan City Karachi, Pakistan and to evaluate the change in urbanization patterns and energy consumption in the buildings. To have better understanding of the issues correlations was established amongst population, urbanization patterns, green area, number of buildings (residential and commercial), building design, energy consumption and metrological records (climate change parameters) by collecting the data from the respective departments. With the help of the collected data amount of carbon dioxide was estimated. The results reveled that during last 36 years the urban population of Karachi increased exponentially from 5,208,000 (1981) to 14,737,257 (2017) with increase in urbanized area from 8.35 km2 (1946) to 3,640 km2 (2017) that may led to reduce the green area of the city from 495,000 hectors (1971) to 100,000 hectors (2015). Moreover, the building’s design and numbers are being changed from 21 high-rise buildings (2009) to 344 (2017). It may be concluded that change in temperature pattern and climatic variability of the city may be due to increase in population and change in lifestyle that lead to high energy consumption that is prime source of increased in CO2 emission in the environment of Karachi city, However, Greenhouse Gases (GHG) releases are much lower than the levels reported from metropolitan cities around the world.

Study on the industrial structure optimization under constraint of energy intensity

2020 ◽  
pp. 0958305X2092159
Author(s):  
Xiongfeng Pan ◽  
Mengna Li ◽  
Chenxi Pu ◽  
Haitao Xu
Keyword(s):  
Energy Consumption ◽  
Computable General Equilibrium ◽  
Technological Progress ◽  
Energy Intensity ◽  
Industrial Structure ◽  
High Energy ◽  
Industrial Sector ◽  
Added Value ◽  
Tertiary Industry ◽  
Intensity Control

This study establishes a multi-sector dynamic computable general equilibrium framework that integrates energy intensity module to explore the reverse feedback effect of energy intensity control on industry structure. The results indicate that (1) the tightening effect of energy intensity constrains on the Industrial sector is most significant, followed by the Tertiary Industry, with the least impact on Agriculture; (2) when there is no technological progress in the departments, the change of industrial structure is mainly reflected in the sharp decline in the proportion of Industry and the significant increase in the proportion of Tertiary Industry. When technological progress exists in high energy-consumption departments, the tightening effect of energy intensity constraints on the industrial sector will be reduced; when there is technological progress in all departments, the industrial structure will have a smaller change, and the technology progress can alleviate the tightening effect of the energy intensity target on various sectors; (3) under the constraint of energy intensity, the high energy-consuming industry shifts to the Equipment Manufacturing with low energy-consumption and high-added value. The increasing proportion of Tertiary Industry mainly comes from two industries including Wholesale, Retail, Hoteling and Catering, and Transportation, Storage, and Post.

Research on Energy Efficiency and Environmental Pollution in China: a Simultaneous Equations Approach

2011 ◽  
Vol 361-363 ◽  
pp. 974-977 ◽  
Author(s):  
Ying Nan Dong ◽  
Yu Duo Lu ◽  
Jiao Jiao Yu
Keyword(s):  
Energy Efficiency ◽  
Sustainable Development ◽  
Energy Consumption ◽  
Environmental Pollution ◽  
Energy Intensity ◽  
Industrial Structure ◽  
Economic Loss ◽  
Simultaneous Equations ◽  
Consumption Structure ◽  
The Relationship

This paper examined the relationship between the energy efficiency and the environmental pollution. By using the data of energy intensity and economic loss caused by environmental pollution (ELP) in China from 1989-2009, a simultaneous equations was developed. The result of two-stage OLS estimation suggested that the energy had exerted positive influences on the decreasing of the environmental pollutions. By enhancing the energy efficiency and adjusting the industrial structure and energy consumption structure, China is exploring a road for sustainable development in the energy conservation.

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