Exergy analysis of Garri “2” 180 MW combined cycle power plant

Abuelnuor, A.A.A.; Saqr, Khalid M.; Mohieldein, Siddig Abuelgasim Abbas; Dafallah, Khalid Ahmed; Abdullah, Mohammednour Mohammed; Nogoud, Yasser Abdullah Mahjoub

doi:10.1016/j.rser.2017.05.077

Cited by 55 publications

(33 citation statements)

References 27 publications

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“…Combine‐cycle power plants (CCPPs) have been evaluated by numerous researchers based on energy and exergy concepts . The majority of studies have focused on the effect of working parameters including TIT, compression pressure ratio, ambient temperature, and humidity on the performance of these systems and their components.…”

Section: Three‐e Analyses Of Power Plantsmentioning

confidence: 99%

“…Combine-cycle power plants (CCPPs) have been evaluated by numerous researchers based on energy and exergy concepts. 17,63,[139][140][141][142][143][144][145][146][147][148][149][150] The majority of studies have focused on the effect of working parameters including TIT, compression pressure ratio, ambient temperature, and humidity on the performance of these systems and their components. Facchini et al 151 In a study, conventional and advanced exergetic analyses were performed on a CCPP consuming natural gas as fuel, as shown in Figure 9.…”

Section: Literaturementioning

confidence: 99%

“…Attributed to this fact, utilizing both energetic and exergetic analysis gives designers a significant insight into the system. This type of analysis enables designers to have more appropriate method to assess and determine the steps toward enhancement …”

Section: Introductionmentioning

confidence: 99%

“…This type of analysis enables designers to have more appropriate method to assess and determine the steps toward enhancement. [14][15][16][17][18] J. Willard Gibbs developed the concept of exergy. More development continued by Zoran Rant later.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic and economic analysis of performance evaluation of all the thermal power plants: A review

Ahmadi

Nazari

Sadeghzadeh

et al. 2018

Energy Science & Engineering

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Surging in energy demand makes it necessary to improve performance of plant equipment and optimize operation of thermal power plants. Inasmuch as thermal power plants depend on fossil fuels, their optimization can be challenging due to the environmental issues which must be considered. Nowadays, the vast majority of power plants are designed based on energetic performance obtained from first law of thermodynamic. In some cases, energy balance of a system is not appropriate tool to diagnose malfunctions of the system. Exergy analysis is a powerful method for determining the losses existing in a system. Since exergy analysis can evaluate quality of the energy, it enables designers to make intricate thermodynamic systems operates more efficiently. These days, power plant optimization based on economic criteria is a critical problem because of their complex structure. In this study, a comprehensive analysis including energy, exergy, economic (3‐E) analyses, and their applications related to various thermal power plants are reviewed and scrutinized.

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Section: Three‐e Analyses Of Power Plantsmentioning

confidence: 99%

Section: Literaturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermodynamic and economic analysis of performance evaluation of all the thermal power plants: A review

Ahmadi

Nazari

Sadeghzadeh

et al. 2018

Energy Science & Engineering

View full text Add to dashboard Cite

show abstract

“…Moreover, 85% of exergy loss of the plant belonged to the combustion chamber and heat exchangers. In another study, a 180 MW Garri 2 combined power plant was evaluated on the basis of exergetic analysis. According to the obtained data, the highest exergy destruction happened in combustion chamber, which is due to high irreversibility of this process.…”

Section: Introductionmentioning

confidence: 99%

Exergetic, economic, and environmental analyses of combined cooling and power plants with parabolic solar collector

Javadi

Ahmadi

Khalaji

2019

Env Prog and Sustain Energy

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Due to the necessity of achieving the energy systems with improved efficiency, combined power plants are developing in recent decades. Moreover, employing renewable energy sources in the power generation and heating/cooling purposes is an attractive idea to obtain more environmentally benign energy systems. In the current study, a combined cooling and power (CCP) plant is analyzed based on exergy and economic concepts. Afterward, by adding lithium‐bromide refrigeration cycle and parabolic solar collectors, the plant is investigated. The exergy efficiency, carbon dioxide emission, and cost of generated electricity are evaluated on the basis of SPECO model. The results of the study show that thermal and exergy efficiencies of the CCP plant with the solar collector depend on various parameters and can be affected significantly. The efficiency of the plant after applying lithium‐bromide refrigeration cycle and the solar collector increased from 50.33 to 51.73%, while the exergy efficiency enhanced from 47.48 to 48.22%. In addition, it was concluded that adding the collector and absorption chiller leads to 1.5% reduction in environmental pollutants.

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Exergy analysis of large and impounded hydropower plants: Case study El Roseires Dam (280 MW)

Abuelnuor

Ahmed

Saqr

et al. 2019

Env Prog and Sustain Energy

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Nowadays, one of the major and serious worldly concerns is the limitation of energy resources. Sudan, in specific, confronts a critical crisis in fossil fuel resources due to its separation science 2011, and mostly concerning the production of electricity energy. There are many sources of renewable energies in Sudan such as hydropower.Which it is widely used in Sudan, and one example is Elroseires hydropower plant.This research aims to conduct an exergy analysis of the performance of the Elroseires hydropower plant to identify areas for improvement using actual operation data. The exergy efficiency and exergy destruction rate of each unit in the plant were determined independently. The thermodynamic inefficiencies of all units of the plant were quantified for analysis to identify breakthrough points for further energy savings.Results indicated that the lowest exergy destruction rate occurs in August (20.6 MW) despite the lowest production of energy during this period. This outcome is due to the volumetric flow rate being less than those in other months, thereby leading to minimal flow turbulence that result in low exergy destruction. By contrast, the greatest exergy destruction occurs in December (106.1 MW) because of the high volumetric flow rate for the same pipe diameter. Such condition leads to turbulent flow and results in considerable exergy destruction. This study emphasizes that exergy analysis is useful in determining irreversibilities and losses in Elroseires hydropower plant to improve its thermodynamic performance. K E Y W O R D S electricity, exergy, hydropower plant, renewable energy 1 | INTRODUCTION The demand for energy has increased drastically since the middle of the last century due to industrial development and population growth.Consequently, many countries have started searching for and developing new and renewable sources of energy. Electricity is considered as the most multipurpose energy carrier in our modern global economy because it is primarily associated with human and economic development. Electricity, as a source of energy, is increasingly growing relative to other sources of energy. This trend is expected to increase for decades as large parts of the world population, especially those in developing countries, become connected to power grids. Electricity needs careful attention with regard to its contribution to global greenhouse gas (GHG) emissions. Energy integration is used to reduce the required energy for any process (power saving) and minimize environmental impact; examples include reheat and regenerative heaters in combined cycle power plants, heat recovery in organic Rankine cycle, and thermocoupling and heat pumping in distillation systems. [1][2][3][4][5][6][7][8][9][10][11]

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Exergy analysis of Garri “2” 180 MW combined cycle power plant

Cited by 55 publications

References 27 publications

Thermodynamic and economic analysis of performance evaluation of all the thermal power plants: A review

Thermodynamic and economic analysis of performance evaluation of all the thermal power plants: A review

Exergetic, economic, and environmental analyses of combined cooling and power plants with parabolic solar collector

Exergy analysis of large and impounded hydropower plants: Case study El Roseires Dam (280 MW)

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