scholarly journals Effect of environmental capabilities on environmental strategies and performances of thermal power plants in Iran

2019 ◽  
pp. 16-29
Author(s):  
Leila Behnia ◽  
Rohullah Bayat Ph.D.
Keyword(s):  
Structural Equation ◽  
Power Plants ◽  
Positive Impact ◽  
Thermal Power ◽  
Environmental Pollutants ◽  
Thermal Power Plants ◽  
Positive Effects ◽  
Power Company ◽  
Modelling Analysis ◽  
Environmental Strategies

The electricity industry has an important role in the economic growth and industrial dynamics in all countries. However, it is one of the main sources of environmental pollutants as well. Hence, environmental experts are always trying to reduce the amount of pollutants. This study aims to realize the relations between environmental capabilities and environmental strategies with environmental, financial and operational performances. Accordingly, questionnaires, by 39 questions, distributed among 103 participants, including environmental experts of the thermal power plants and thermal power company. Among 103 questionnaires, 70 qualified questionnaires were collected. The reliability of questioners was tested by Cronbach alpha criterion and the amount of this criterion (0.845) verified the reliability of the questionnaire. Also, the validity of the questionnaire confirmed through the Fornell and Locker methods and other factors. For testing the hypotheses of research, the method of structural equation modelling analysis was used. The empirical results show that: 1. The environmental capabilities have a positive impact on environmental strategies 2. The environmental strategies have positive impacts on financial, operational and environmental performances 3. The environmental capabilities can have positive effects on environmental, financial and operational performance through environmental strategies. These results confirm that focusing on environmental issues of thermal power plant activities, not only improve environmental performance, but also improve their operational and financial performances.

A Case Study to Evaluate the Productivity Changes of the Thermal Power Plants of the Taiwan Power Company

2007 ◽  
Vol 22 (3) ◽  
pp. 680-688 ◽  
Author(s):  
Chen-Fu Chien ◽  
Wen-Chih Chen ◽  
Feng-Yu Lo ◽  
Yi-Chiech Lin
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Power Company

scholarly journals Enhancing properties of concrete by addition of fly ash from a thermal power plant for application in geothermal systems

2020 ◽  
Author(s):  
Milica Vlahović ◽  
◽  
Aleksandar Savić ◽  
Sanja Martinović ◽  
Nataša Đorđević ◽  
...  
Keyword(s):  
Fly Ash ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Thermal Power ◽  
Electricity Production ◽  
Thermal Power Plants ◽  
Amorphous Sio2 ◽  
Positive Effects ◽  
Structural Applications

Electric power in Serbia is predominantly provided by thermal power plants. All of eleven existing thermal power plants in Serbia use coal, mainly lignite in the electricity production process thus generating about 6 million tons of fly ash per year. The estimated amount of fly ash from thermal power plants accumulated in Serbian landfills exceeds 200 million tons. On the other hand, during the last decades, respecting the principles of ecologically sustainable development has been imposed on industries, and one of them is the construction industry. Due to the presence of amorphous SiO2 and Al2O3, fly ash as pozzolanic material is convenient for the production of concrete and mortar. Consequently, multiple positive effects can be expected by the proper consumption of fly ash- reducing landfills and improving concrete properties. The idea of ​​this study is to analyze the possibility of recycling fly ash from a thermal power plant by replacing a part of common mineral filler- limestone in the production of self-compacting concrete (SCC). Properties of conventional SCC with limestone and compositions with different fly ash content were compared. Considering that requirements for SCC should be satisfied and all properties remain or enhance in the case of fly ash addition, this study proved that all designed concretes can be used for structural applications.

Research and Development of Viscous Fluid Dampers for Improvement of Seismic Resistance of Thermal Power Plants: Part 9 — Investigation Regarding Damage Between Furnace and Cage

2020 ◽  
Author(s):  
Kiyoshi Aida ◽  
Keisuke Minagawa ◽  
Satoshi Fujita
Keyword(s):  
Power Generation ◽  
Seismic Response ◽  
Power Plants ◽  
Seismic Waves ◽  
Thermal Power ◽  
Great East Japan Earthquake ◽  
Thermal Power Plants ◽  
Power Company ◽  
Fluid Dampers ◽  
Viscous Fluid Dampers

Abstract Boilers in coal-fired thermal power plants were often damaged by earthquakes such as the Great East Japan Earthquake in 2011. Since the coal-fired thermal power generation has been one of the main power generation methods after the Great East Japan Earthquake, mitigation of damage of boilers in thermal power plants by earthquakes is the very important subject in order to recover our daily life immediately after strong earthquakes. Meanwhile, a boiler in a coal-fired thermal power plant was damaged by Hokkaido Eastern Iburi Earthquake in 2018, and this damage was one of the causes of Hokkaido’s prefecture-wide blackout. According to a report by an electric power company, a damage occurred between a furnace and a cage of the boiler. In general, lengths, shapes, weights and so on of a furnace are different from a cage, so vibration characteristics and seismic response are different as well. Thus the connecting part between the furnace and the cage is a weak point in the boiler, and the damages often occurred there. Therefore this paper investigates seismic response of a boiler by a numerical analysis using a frame model from the viewpoint of the damage of the furnace and the cage. Various seismic waves were used as input waves in order to investigate the influence of the input wave. A result of a modal analysis was also provided in this paper.

Optimal Control of Thermal Power Plants

1989 ◽  
Vol 111 (3) ◽  
pp. 511-520 ◽  
Author(s):  
H. Nakamura ◽  
Y. Toyota ◽  
M. Kushihashi ◽  
M. Uchida
Keyword(s):  
Optimal Control ◽  
Power Plants ◽  
Controller Design ◽  
Thermal Power ◽  
Space Representation ◽  
Total Output ◽  
Thermal Power Plants ◽  
State Space Representation ◽  
Power Company ◽  
Control Computer

Application of optimal control system to thermal power plants is introduced. The suggested system consists of the conventional PID controllers and the control computer. It has been successfully applied to five supercritical power plants in Kyushu Electric Power Company (Total output 2,700 MW) since 1978. In the system, system identification or state space representation of the plant is performed based on the AR (Autoregressive) model describing the system dynamics. The optimal controller is designed by the orthodox Dynamic Programming procedure under a quadratic criterion function. In the paper, the procedure of the controller design and the control performance of the system are described with some results obtained both in a power plant simulation model and in the actual plants.

scholarly journals Initial Allocation of SO2 Emission Rights Based on the Combination Weighting Method: Evidence from China’s Thermal Power Plants

2021 ◽  
Author(s):  
Ying Qu ◽  
Yingmin Yuan ◽  
Lingling Guo ◽  
Yusha Li
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Indicator System ◽  
Pollutant Emission ◽  
Thermal Power Plants ◽  
Weighting Method ◽  
Initial Allocation ◽  
Positive Effects ◽  
Emission Rights ◽  
Combination Weighting Method

Abstract Emission trading system is an effective market-oriented means to control pollutant emission and reasonable initial allocation of emission rights is the premise of its smooth implementation. However, at present, the initial allocation of emission rights depends largely on the amount of emissions, which leads to weak positive guidance effect for enterprises. So to explore the optimal initial allocation method of SO2 emission rights, this paper takes 8 thermal power plants in Dalian, China as the research objects to calculate the initial allocation of SO2 emission rights. Because SO2 is the main cause of acid rain, which is one of the most serious air pollution in China, and thermal power plants are among the main SO2-emitters. Firstly, an indicator system is established considering enterprise size, pollutant discharge and social contributions, as well as pollution control capacity. Then, the combination weighting method is developed through integrating the subjective methods G1 and G2 with the objective ones, entropy and maximum deviation. The empirical results show that the enterprises with more desulfurization equipment or large heating supply are supposed to get more emission rights; the actual emission value of SO2 in half of the enterprises exceeds the theoretical ones; SO2 removal rate, desulfurization equipment quantity and heating supply exert the most positive effects on the initial allocation of emission rights. The constructed model can be used as a reference for future research of initial allocation of other pollutants' emission rights. Also, the implications have been proposed for the government, industry, and enterprises.

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