Energy and exergy analysis of a steam power plant in Jordan (original) (raw)
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Energy and Exergy Analysis of a Steam Power Plant in Sudan
African Journal of Engineering and Technology, 2021
In this study, the energy and exergy analysis of Garri 4 power plant in Sudan is presented. The primary objective of this paper is to identify the major source of irreversibilities in the cycle. The equipment of the power plant has been analyzed individually. Values regarding heat loss and exergy destruction have been presented for each equipment. The results confirmed that the condenser was the main source for energy loss (about 67%), while exergy analysis revealed that the boiler contributed to the largest percentage of exergy destruction (about 84.36%) which can be reduced by preheating the inlet water to a sufficient temperature and controlling air to fuel ratio.
Energy and exergy analysis of Montazeri Steam Power Plant in Iran
ScienceDirect, 2016
This paper aims at investigating steam cycle of Shahid Montazeri Power Plant of Isfahan with individual unit capacity of 200 MW. Using mass, energy, and exergy balance equations, all cycle equipment have been analyzed individually and energy efficiency, exergy efficiency, and irreversibility has been calculated for each of them as required. EES (Engineering Equation Solver) software is used for performing analyses. Values and ratios regarding heat drop and exergy loss have been presented for each equipment in individual tables. The results from the energy analysis show that 69.8% of the total lost energy in the cycle occurs in the condenser as the main equipment wasting energy, while exergy analysis introduces the boiler as the main equipment wasting exergy where 85.66% of the total exergy entering the cycle is lost.
International Journal of Engineering Research and Technology (IJERT), 2012
https://www.ijert.org/energy-and-exergy-analysis-of-a-boiler-with-different-fuels-like-indian-coal-imported-coal-and-l.s.h.s.-oil https://www.ijert.org/research/energy-and-exergy-analysis-of-a-boiler-with-different-fuels-like-indian-coal-imported-coal-and-l.s.h.s.-oil-IJERTV1IS8531.pdf Energy sector is one of the important areas in the economic development of any country. Meeting the growing energy demands at acceptable costs in various sectors like industries, commercial, transport, etc., is the challenge to the energy planner. The present work is an account of Energy and Exergy analysis of a Boiler in the captive power plant of “Nilkanth concast pvt ltdAnjar.” The captive power plant of nilkanth concast pvt ltd, Anjar consists of 50 MW capacities Turbine Generator set (2 Unit). The capacity of the each Turbine Generator set is 25 MW. The capacity of the each Boiler for the steam generation 180 T/hr. coal, NG, and Oil fired boiler supplied by B.H.E.L. (3 Unit) and NG and Oil fired boiler supplied by Thermax babcock wilcox(1 Unit). Some basic Concept regarding the Energy and Exergy are presented in the here. The theoretical analysis for simple process, such as those for a simple boiler is presented. The general overview of the Boiler Plant is discussed. The quantitative analysis of the plant and its equipment is carried out in. First the 1st law analysis for the system has been carried out. The analysis has been presented for the boiler. After completing the whole 1st law analysis of the Boiler plant, the 2nd law analysis has been presented. The results obtained by 1st and 2nd law analysis are compared in this section. Some assumption made during calculations is also presented here along with the explanation for such assumptions. Finally concludes the work and the suggestions for future work. Suitable computer programs are developed for both energy and exergy analysis of a Boiler plant. The analysis shows that the 1st law efficiency of Boiler Plant with different fuels like Indian coal, imported coal, (60% Imp + 40% Ind) coal and L.S.H.S oil are 76.54%, 83.03%, 80.60%, and 88.20% respectively and as well as exergetic (rational) efficiency of the Boiler Plant are 37%, 37.7%, 37.8% and 40.1% respectively.
مجلة أكاديمية الجبل للعلوم الأساسية والتطبيقية
In this study, an energy and exergy analysis of the Derna steam power plant in Libya is presented. This study aims to identify the components with high energy and exergy losses which are leading to a decrease in the performance of the power plant. The largest place losses can be figured out hence to subsequently ensure where the greatest margin for improvement would be incurred. The influence of different parameters, such as temperatures and pressure values, on this analysis, is also conducted via the so-called Engineering Equation Solver software (EES). In terms of energy, the condenser is found to majorly have the highest energy losses of approximately 103MW which is received by the environment whilst the boiler losses are recorded to be about 24MW. As far as exergy is concerned, the boiler system is found to have the highest percentage ratio of exergy destruction to overall exergy destruction of 88 %, followed by the turbine of 8% and then the condenser of 3%. In addition, the th...
Energy and Exergy Analysis of a 348.5 MW Steam Power Plant
Energy Sources, Part A: Recovery, Utilization, And Environmental Effects, 2010
In the present work, the energy and exergy analysis of Kostolac power plant in Serbia is presented. The primary objectives of this article are to analyze the system components separately and to identify and quantify the sites having the largest energy and exergy losses. The energy and exergy efficiency is calculated using the plant operating data from the plant at different loads. The load variation is studied with the data at 100% and 60% of full load. Moreover, the effects of the load variations are calculated in order to obtain a good insight into this analysis. The performance of the plant is estimated by a component-wise modeling, and a detailed break-up of energy and exergy losses for the considered plant has been presented. The results show that energy losses have mainly occurred in the condenser where 421 MW is lost to the environment while only 105.78 MW has been lost from the boiler. Nevertheless, the irreversibility rate of the boiler is higher than the irreversibility rates of the other components. The percentage ratio of the exergy destruction to the total exergy destruction was found to be maximum in the boiler system (88.2%) followed by the turbines (9.5%), and then the forced draft fan condenser (0.5%). In addition, the calculated thermal efficiency based on the lower heating value of fuel was 39% while the exergy efficiency of the power cycle was 35.77%.
Exergy Analysis of Coal-Based 2 X 7 MW Steam Power Plant
International Journal of Electrical, Energy and Power System Engineering
In this study, an analysis was conducted on a steam power plant system with a capacity of 2 x 7 MW based on coal. The coal fuel used by the majority of refined sizes is not in accordance with the recommendations of the American Society of Mechanical Engineers (ASME). The main objective of the study was to analyze the system components separately and to measure the exergy value of the components, covering the electrical energy so that it is known which equipment experiences the greatest energy loss as well as knowing the efficiency value of the equipment used. Efficiency and exergy are calculated using plant operation data. The results of the study found that the largest exergy destruction occurred in boilers, meaning that there was the largest energy loss in this section with a value of 37.34 MW (16.71%), while the destruction of the smallest exergy occurred in condensers of 0.58 MW (99.24%).
Energy and Exergy Analyses of Boiler and its Parts of Lakhra Coal Power Plant (FBC) Jamshoro
Noble International Journal of Scientific Research ISSN(e): 2521-0246 ISSN(p): 2523-0573 Vol. 01, No. 10, pp: 104-111, 2017, 2017
The energy and exergy analyses especially of boiler of 50 MW unit of lakhra power is demonstrated through EES software in this research paper because of its consistent, persistence and recurring failure even its minor failure renders whole power plant to remain shut down for indefinite period of time till its rectification, repairing, maintenance and replacing. However, the chief parts of boiler in the plant are fluidized bed combustion chamber, super heater, economizer and air preheater which are aimed at increasing overall efficiency and optimizing performance by proper utilizing supposed-to-be wastage like flue gas and its high temperature heat and energy potential. Through energy analysis the energy loss along with the first law efficiency of the parts have been computed and calculated which shows quantitative loss while for qualitative loss the exergy method has been employed to figure out second law efficiency of components of boiler, generation of entropy, irreversibility and destruction. Through the investigation it was witnessed that the most destructive parts of boiler is the combustor where uncontrolled chemical reactions and maximum loss and destruction, due to heat loss and radiation losses, take place where energy loss is 90% and exergy destruction is 55% succeeded by super heater where 5% energy loss occurs and 36% exergy destruction happens. The highest optimized part of the boiler is air preheater that has 78% and 79% energy and exergy efficiency respectively.
Exergy Analysis of 1 x 135 MW Jeneponto Steam Power Plant
2021
Exergy analysis is application of the second law thermodynamics which provides information about large exergy, exergy efficiency, destruction, and destruction efficiency in each component of PLTU so can be reference for improvement and optimization in an effort to reduce losses and increase efficiency. The exergy value obtained from calculating mass flowrate, enthalpy, ambient temperature, and entropy. The destruction value is obtained from difference between input exergy value and exergy output. The destruction exergy value from comparison between output exergy value to input exergy value, and destruction efficiency value from comparison of destruction value to total destruction value of PLTU components. The results showed that the largest exergy occurred in boilers, namely 778.225 MW in 2018, 788.824 MW in 2019, and 796.824 MW in 2020, lowest exergy value in CP was 0.160 MW in 2018, 0.176 MW in 2019, and 0.160 MW in 2020. The largest destruction occurred in boilers, namely 163.970...
Exergy and exergo-economic evaluation of Isfahan steam power plant
2013
The objective of this paper is to perform the exergy and exergo-economic analysis of Isfahan steam power plant. A simulation program is used for modelling the Isfahan steam power plant in Iran. The exergy balance is used to estimate the exergy destruction in each component of the plant. Moreover, the cost balance equations are solved to determine the cost of exergy destruction in each part of the Isfahan STPP. The highest exergy destruction has mainly occurred in boiler and preheater1&condenser by almost 360.65 MW and 38.81 MW, respectively. In addition, the cost destruction for boiler is about 15090.8 US$/h and for preheater1&condenser is 6056.57 US$/h. Furthermore, the effect of key parameters such as the main steam temperature, reheated steam temperature, condenser pressure and number of the feed water heaters on the cycle performance as well as the final cost of electricity is determined. In particular, by decreasing the condenser, pressure from 0.7 to 0.05 bar the final cost of...