scholarly journals Evaluating the Efficiency of Heat and Power Systems by the Data Envelopment Analysis Method

2021 ◽  
Vol 16 ◽  
pp. 185-194
Author(s):  
M. Pokushko ◽  
A. Stupina ◽  
I. Medina-Bulo ◽  
E. Dresvianskii ◽  
A. Stupin ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Data Envelopment Analysis ◽  
Power Systems ◽  
Thermal Energy ◽  
Heat Supply ◽  
Heat Supply System ◽  
Supply System ◽  
Data Envelopment ◽  
Dea Method ◽  
Output Indicators

The article describes the Data Envelopment Analysis (DEA) method and the main features of its application. The main problems of heat and power systems are described, which are addressed by the DEA method of efficiency assessment presented in the article. The approbation of this method is presented at the objects of the centralized municipal heat supply system of the fuel and energy complex: boiler houses and heat and power plants. 9 objects were analyzed according to four input indicators: available heat capacity, installed heat capacity, heat consumption for own needs, fuel consumption. Also, the efficiency of the system was evaluated according to two output indicators: the release of thermal energy to the grid and the mass of the emission. As a result of the analysis and calculations made, it was revealed that 5 objects have the maximum possible efficiency indicator equal to 1, that is, they function as efficiently as possible. 4 objects of the centralized municipal heat supply system have an efficiency indicator less than 1. Accordingly, improvements are required for the operation of the above Decision-Making Units (DMU)s. These objects have deviations in terms of the inputs and outputs of the actual data and those obtained using the DEA method. Based on the calculations obtained for these 4 objects, the article provides recommendations for changing the quantitative values of their input and output indicators. For example, for object number 2, it is recommended to reduce the installed heat capacity in the grid by 72.57%, without changing the available heat capacity and fuel consumption. Reduce the heat consumption for your own needs by 69.383%. In addition, it is recommended to increase the supply of thermal energy to the grid by 6,034%, and reduce the mass of emission by 11.5%. Specific measures have also been developed to modernize the studied objects in order to achieve the recommended indicators of inputs and outputs. The research results presented in the article are of scientific and practical interest and can be used to improve the efficiency of heat and power systems facilities

scholarly journals Data Envelopment Analysis in Performance Assessment of Fuel and Energy Complex Enterprises

2020 ◽  
Vol 2020 (2) ◽  
pp. 251-262
Author(s):  
Mariia Pokushko ◽  
Alena Stupina ◽  
Inmaculada Medina-Bulo ◽  
Egor Dresvianskii
Keyword(s):  
Data Envelopment Analysis ◽  
Performance Assessment ◽  
Heat Supply ◽  
Power Plants ◽  
Heat Supply System ◽  
Supply System ◽  
Data Envelopment ◽  
Advantages And Disadvantages ◽  
Dea Method ◽  
The City

The authors applied the Data Envelopment Analysis (DEA) to assess the performance of the heat supply system in the city of Krasnoyarsk. The article provides a detailed description of the DEA method, its positive sides and shortcomings. The research included a comparative analysis of performance assessment methods in terms of advantages and disadvantages. The DEA method proved the most convenient tool for measuring the production efficiency of an object. The authors modified the architecture of the universal decision support system into a DEA-based one. The DEA method also proved highly efficient in assessing the performance of the heat supply system in the city of Krasnoyarsk. The analysis made it possible to develop recommendations to improve the efficiency of the local heat supply system using the case of thirteen unites, e.g. boilers, heat and power plants, etc. The input indicator was represented by the available heat capacity. Heat output to the grid and emission mass were used as output indicators. Based on the available initial data, the authors constructed an output-oriented model for analyzing the functioning environment with one input and two outputs. They identified inefficient units of the Krasnoyarsk heat supply system and proposed optimization of input and output values for each unit to improve the functioning of the heat supply system as a whole. The developed for the upgrading of boilers and heat and power plants had an efficiency index in the range up to 1.

scholarly journals Benchmarking—A Way of Finding Risk Factors in Business Performance

2021 ◽  
Vol 14 (5) ◽  
pp. 221
Author(s):  
Jarmila Horváthová ◽  
Martina Mokrišová ◽  
Mária Vrábliková
Keyword(s):  
Risk Factors ◽  
Data Envelopment Analysis ◽  
Heat Supply ◽  
Business Performance ◽  
Data Envelopment ◽  
Performance Factors ◽  
Best Value ◽  
Target Values ◽  
Dea Method ◽  
Comparison Of The Results

The purpose of this study was to emphasize that the Data Envelopment Analysis (DEA) method is an important benchmarking tool which provides necessary information for improving business performance. To fulfil the abovementioned goal, we used a sample of 48 Slovak companies involved in the field of heat supply. As their position in the economic and social environment of the country is essential, considerable attention should be paid to improving their performance. In addition to the DEA method, we applied the Best Value Method (BVM). We found that DEA is a highly important benchmarking tool, as it provides benchmarks for units that have problems with performance and helps us to reveal risk performance factors. The DEA method also allows us to determine target values of indicators. The originality of this paper is in its comparison of the results of the BVM and the DEA methods.

scholarly journals The influence of changes in the project on the reliability of heat power systems during construction and installation works

2019 ◽  
Vol 124 ◽  
pp. 05083
Author(s):  
T.G. Gorbunova ◽  
T.O. Politova ◽  
Sh.G. Ziganshin ◽  
E.V. Izmailova ◽  
V.V. Serov
Keyword(s):  
Power Systems ◽  
Heat Supply ◽  
Heat Supply System ◽  
Supply System ◽  
Negative Consequences ◽  
Regulatory Requirements ◽  
Heat Networks ◽  
Design Engineers ◽  
The Cost

However, during the construction and reconstruction of existing heat networks, cases that lead to unstable operation of newly laid or replaced areas arise. An important task is to minimize the reasons that can cause damage to replaced areas. Factors that negatively affect the reliability include: laying pipelines without design documentation, non-compliance of the regulatory requirements for their laying by installation organizations. The assumptions of design engineers developing the project and installers laying the heating main can lead to negative consequences, including a decrease in the reliability of the facilities functioning. Physical deterioration, coupled with the above factors, leads to a large number of failures of heat networks. Breakthroughs reduce the reliability of the entire heat supply system, worsen the quality of the supplied coolant and lead to an increase in the cost of maintenance of heat networks by operating organizations. The paper considers the influence of changes in the project during the construction and installation works on the reliability of the heat supply system.

scholarly journals Reconstruction of power systems of small cities and rural settlements

2020 ◽  
pp. 91-93
Author(s):  
Natalya Anatolyevna Kharlamova
Keyword(s):  
Power Systems ◽  
Heat Supply ◽  
Heat Supply System ◽  
Supply System ◽  
Investment Policy ◽  
Rural Settlements ◽  
Small Cities ◽  
Basic Principles ◽  
Heat Supply Systems ◽  
Supply Systems

The basic principles of developing measures for the reconstruction of elements that make up the heat supply system, including heat consumers, heat networks and heat supply sources, are considered. Some issues of organizing the reconstruction and modernization of heat supply systems for the purpose of energy saving and the specifics of investment policy are analyzed.

scholarly journals Selecting Suitable, Green Port Crane Equipment for International Commercial Ports

2021 ◽  
Vol 13 (12) ◽  
pp. 6801
Author(s):  
Guo-Ya Gan ◽  
Hsuan-Shih Lee ◽  
Yu-Jwo Tao ◽  
Chang-Shu Tu
Keyword(s):  
Data Envelopment Analysis ◽  
Environmental Protection ◽  
Green Energy ◽  
Programming Approach ◽  
Data Envelopment ◽  
Container Handling ◽  
Dea Method ◽  
Green Port ◽  
Large Container ◽  
Gantry Cranes

Responding to the increasing global need for environmental protection, a green port balances economic vibrancy with environmental protection. However, because exhaust emissions (e.g., CO2 or sulfide) are difficult to monitor around ports, data on such emissions are often incomplete, which hinders research on this topic. The present study aimed to fill this gap in this topic. To remedy this problem, this study formulated a new data envelopment analysis (DEA) method for collecting CO2 emissions data at their source. This method was applied to collect real-world operating data from a large container-handling company in Taiwan. Specifically, we provide a real example using a novel green energy index to account for undesirable outputs. Our main objective was to formulate two methods that combine: (1) data envelopment analysis based on a modified slack-based measure, and (2) a multi-choice goal programming approach. The contributions of this paper included the finding that rubber-tired gantry cranes are the greenest and should be used in ports. Finally, our findings aid port managers in selecting port equipment that provides the best balance between environmental protection and profitability.

Investigations and designing of a geothermal heat supply system

2010 ◽  
Vol 57 (4) ◽  
pp. 341-346 ◽  
Author(s):  
V. A. Butuzov ◽  
G. V. Tomarov ◽  
E. V. Bryantseva ◽  
V. V. Butuzov
Keyword(s):  
Heat Supply ◽  
Heat Supply System ◽  
Supply System ◽  
Geothermal Heat

scholarly journals STUDYING HUMAN PARTICIPATION IN MICROCLIMATE MANAGEMENT

ASJ. ◽  
2020 ◽  
Vol 1 (42) ◽  
pp. 42-47
Author(s):  
M. Koroli ◽  
F. Khashimova
Keyword(s):  
Heat Supply ◽  
Mutual Influence ◽  
Heat Supply System ◽  
Supply System ◽  
Sociological Research

In the work on the analysis of sociological research, an author attempts to reveal the mutual influence that exists between the heat supply system and the consumer.

scholarly journals The Efficiency of Non-Bank Financial Intermediaries: Empirical Evidence from Malaysia

2008 ◽  
Author(s):  
Fadzlan Sufian
Keyword(s):  
Risk Factors ◽  
Data Envelopment Analysis ◽  
Empirical Evidence ◽  
Financial Institutions ◽  
Economies Of Scale ◽  
Financial Intermediaries ◽  
Scale Efficiency ◽  
Data Envelopment ◽  
Parametric Data ◽  
Dea Method

This paper investigates the performance of Malaysian non-bank financial institutions during the period of 2000-2004. Several efficiency estimates of individual NBFIs are evaluated using the non-parametric Data Envelopment Analysis (DEA) method. The findings suggest that during the period of study, scale inefficiency outweighs pure technical inefficiency in the Malaysian NBFI sector. We find that the merchant banks have exhibited a higher, technical efficiency compared to their peers. The empirical findings suggest that scale efficiency tends to be more sensitive to the exclusion of risk factors, implying that potential economies of scale may be overestimated when risk factors are excluded.  

Sign in / Sign up

Export Citation Format

Share Document