scholarly journals An Approach to Analyse Energy and Exergy Analysis of Thermal Power Plants: A Review

2010 ◽  
Vol 01 (03) ◽  
pp. 143-152 ◽  
Author(s):  
Vundela Siva Reddy ◽  
Subash Chndra Kaushik ◽  
Sudhir Kumar Tyagi ◽  
Narayanlal Panwar
Keyword(s):  
Power Plants ◽  
Exergy Analysis ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis

Energy and Exergy Analysis for Three Type 500MW Steam Power Plants

2011 ◽  
Vol 148-149 ◽  
pp. 1131-1136
Author(s):  
Zhi Li ◽  
Zhong Min Li ◽  
Zhan Liang Yan
Keyword(s):  
Power Plants ◽  
Exergy Analysis ◽  
Thermal Power ◽  
Climatic Conditions ◽  
Low Grade ◽  
Thermal Power Plants ◽  
Energy And Exergy ◽  
Pressure Limitation ◽  
Energy And Exergy Analysis ◽  
Steam Parameters

The paper shows the comparison of energy and exergy analysis of thermal power plants based on advanced steam parameters in China climatic conditions. The research contains coal-based thermal power plants using sub-critical, super-critical, and ultra-supercritical steam conditions. The design configurations of 500 MW unit size were considered. The research contains the effect of condenser pressure on plant and exergy efficiency. The effect of high grade coal on performance parameters as compared to typical China low grade coal was also studied. The major exergy loss took place in coal combustion followed by the steam generator. Due to condenser pressure limitation, the maximum possible overall energy efficiency was found to be about 44.4% with the ultra-supercritical power plant. Installing coal-based thermal power plants based on advanced steam parameters in China will be a prospective option aiding energy self-sufficiency.

Energy and Exergy Analysis of a Biomass Power Plant

2016 ◽  
Author(s):  
João Silva ◽  
Senhorinha F. Teixeira ◽  
Simone Preziati ◽  
José Carlos Teixeira
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Exergy Analysis ◽  
Thermal Power ◽  
Normal Operation ◽  
Strong Incentive ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Dry Climates ◽  
Biomass Power Plant

The fulfilment of energy targets regarding the use of renewable energy has been a strong incentive to the development of dedicated power plants using biomass. Because these facilities operate with low value residues, this orientation has also received a strong incentive by the quest to reduce the amount of fuel in the woods and lowering the risk of fire. This issue is a major problem in dry climates. Although the number of plants planned for Portugal was very large, the actual number of units in operation is small. The first plant to enter production in Portugal was the thermal power plant of Mortágua. In this paper the energy and exergy analysis in this plant is presented. The objective of this work is to develop an analysis for the energy conversion in the plant. This is based on parameters that were retrieved during its normal operation and include: biomass and air flow rate, temperature measurements of the flue gases throughout the facility including the economizer, the two superheaters and flue gas composition. The elemental analysis of the biomass resulting from a blend of various sources was measured in addition to its moisture (ranging between 20 and 45% depending on the sources). The analysis was carried out for a fuel batch with a moisture of 35%. The plant was operated at three loads (full load, 80% and 65% load) and from the energy/mass balances the overall efficiency was calculated to be approximately 26%. The data were also used to perform a second law analysis of the plant which enables the calculation of the exergy destruction in the various components of the facility, including the external irreversibility. It was observed that the combustion chamber is the prime contributor to the overall loss of efficiency. The exergy efficiency was found approximately 22%.

Performance degradation diagnosis of thermal power plants: A method based on advanced exergy analysis

2016 ◽  
Vol 130 ◽  
pp. 219-229 ◽  
Author(s):  
Peng Fu ◽  
Ningling Wang ◽  
Ligang Wang ◽  
Tatiana Morosuk ◽  
Yongping Yang ◽  
...  
Keyword(s):  
Power Plants ◽  
Exergy Analysis ◽  
Thermal Power ◽  
Performance Degradation ◽  
Thermal Power Plants ◽  
Degradation Diagnosis

Thermodynamic and Economic Assessment of Solar Thermal Power Plants for Cameroon

2020 ◽  
pp. 1-46
Author(s):  
Alain Christian Biboum ◽  
Ahmet Yilanci
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Economic Assessment ◽  
Sub Saharan Africa ◽  
Solar Thermal ◽  
Thermal Power Plants ◽  
Solar Thermal Power ◽  
Energy And Exergy ◽  
Sub Saharan ◽  
Installed Capacity

Abstract In this study, it is aimed to conduct the thermodynamic and economic analysis of solar thermal power plants using parabolic trough collectors (PTC), linear Fresnel reflectors (LFR) and solar tower (ST) technologies for Cameroon. The analysis is performed for each power plant with the installed capacity of 5 MWe. Initial investment costs for the solar thermal power plants using PTC, LFR and ST technologies are estimated to be 33.49 Million USD, 18.77 Million USD and 36.31 Million USD while levelized costs of electricity (LCOE) are found to be varying from 145.6 USD/MWh to 186.8 USD/MWh, 112.2 USD/MWh to 154.2 USD/MWh and 179.2 USD/MWh to 220.4 USD/MWh, respectively. For the solar thermal power plants using PTC, LFR and ST technologies, payback periods are obtained to be 6.57 years, 6.84 years and 6.02 years, and also, internal rates on the return are calculated to be 21.03%, 20.42% and 22.47%, respectively. Overall energy and exergy efficiency values are found to be 13.39% and 14.37%; 11.90% and 13.74%; 12.13% and 13.64% for the solar thermal power plants using PTC, LFR and ST technologies, respectively. In conclusion, it is seen that LFR technology presents the best performance with the combination of thermodynamic and economic metrics for the deployment of solar thermal power plants in the countries in sub-Saharan Africa like Cameroon.

scholarly journals Energy and exergy analysis of dry-steam geothermal power plant: Case study in kamojang geothermal power plant unit 2

2018 ◽  
Vol 197 ◽  
pp. 08018
Author(s):  
Nova Dany Setyawan ◽  
Nugroho Agung Pambudi ◽  
Frandhoni Utomo ◽  
Herman Saputro ◽  
Reza Adiprana ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Power Plant ◽  
Power Plants ◽  
Exergy Analysis ◽  
Research Unit ◽  
Geothermal Power Plant ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Geothermal Power ◽  
The Government

The Government of Indonesia is committed to realize a policy of 35,000 Megawatt (MW) of an additional supply of electricity within 5 years (2014-2019). The projection of this capacity is largely supported by fossil fuel power plants and a small portion of renewable energy. One of the renewable energy which currently has great potential in Indonesia is the geothermal. Therefore, improving the capacity of geothermal is needed to support the policy. The Kamojang is one of the largest geothermal power plant in Indonesia with an installed capacity of 235 MW from 5 generating units. The purposes of this research is to calculate the energy and exergy analysis at Kamojang geothermal power plant. To improve the capacity, exergy analysis can be used by employing the thermodynamic method. In this research, unit 2 of Kamojang's plant is employed. The analysis was examined by using the Engineering Equation Solver (EES) code. The results show the first law of efficiency was calculated at 19.03% and the second law of efficiency at 40.31%.

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