Exergetic and Thermoeconomic Analysis of the “Villa de Reyes” Steam Power Plant Operating on Partial Load

2016 ◽  
Author(s):  
María D. Duran García ◽  
Juan A. Jiménez García ◽  
Bernd Weber
Keyword(s):  
Power Plant ◽  
Relation Extraction ◽  
Point Of View ◽  
Design Parameters ◽  
Energetic Efficiency ◽  
Steam Power ◽  
Total Load ◽  
Steam Power Plant ◽  
Partial Load ◽  
The Cost

In this paper a thermoeconomic and exergy analysis of a steam power plant located at Villa de Reyes, México is presented. This study is focused on the analysis on partial load of this plant. According to the steam power plant operation manual this plant is able to operate at 25%, 50%, 75% and 100% of the total load installed, and some design parameters are established for this operation loads. Nevertheless during this study it was observed that this parameters and operation loads conditions are not the most efficient from the energetic and exergetic point of view, and also, the values of the thermal parameters used for these operation loads were not the optimum. In this context the objective of this research was to design a model for the power plant simulation in order to determine the best design parameters and operation loads conditions for this particular facility. First of all the model was validated, with the information of the operation manual of the steam generator. Once the model was validated, it was achieved the thermal, exergetic and thermoeconomic analysis. As a result it was observed that the best operation load conditions are at 100%, 98.4%, 93.3% and 75.6%. Also some optimal values of air-gas relation, extraction pressure and drum pressure were found. It was observed that an energetic efficiency up to 35.5% and exergetic efficiency up to 29% may be achieved. Finally it was achieved the thermoeconomic analysis in order to determine the cost of the energetic and exergetic loses and identify the elements that produce the higher irreversibility.

scholarly journals Analysis and Optimization of Atmospheric Drain Tank of Lng Carrier Steam Power Plant

2020 ◽  
Vol 8 (8) ◽  
pp. 568
Author(s):  
Igor Poljak ◽  
Toni Bielić ◽  
Vedran Mrzljak ◽  
Josip Orović
Keyword(s):  
Power Plant ◽  
Exergy Efficiency ◽  
Point Of View ◽  
Outlet Temperature ◽  
Steam Power ◽  
Stream Flows ◽  
Steam Power Plant ◽  
Carrier Energy ◽  
Reduced Gradient ◽  
Condensate System

The atmospheric drain condensate system of a marine steam power plant is described and evaluated from the energetic and exergetic point of view at a conventional liquefied natural gas (LNG) carrier. Energy loss and exergy destruction rate were calculated for individual stream flows joined in an atmospheric drain tank with variations of the main turbine propulsion speed rate. The energy efficiency of joining streams was noted to be above 98% at all observed points as the atmospheric drain tank was the direct heater. The exergy efficiency of the stream flows into the drain tank was in the range of 80% to 90%. The exergy stream flow to the tank was modeled and optimized by the gradient reduced gradient (GRG) method. Optimization variables comprised contaminated and clean condensate temperature of the atmospheric drain tank and distillate water inlet to the atmospheric drain tank with respect to condensate outlet temperature. The optimal temperatures improves the exergy efficiency of the tank as direct heater, to about 5% in port and 3% to 4% when the LNG carrier was at sea, which is the aim of optimizing. Proposals for improvement and recommendations are given for proper plant supervision, which may be implemented in real applications.

scholarly journals Energy and Exergy Analysis of Steam Power Plant 3rd Unit PT PLN (PERSERO) Centre Unit Generation Tanjung Jati B Use BFP-T Modification Cycle

2019 ◽  
Vol 125 ◽  
pp. 13003
Author(s):  
MSK. Tony Suryo U ◽  
Eflita Yohana ◽  
Syarif Dwi Priyanto ◽  
Ignatius Apryando M. ◽  
Tauviqirrahman
Keyword(s):  
Power Plant ◽  
Exergy Analysis ◽  
Energetic Efficiency ◽  
Exergetic Efficiency ◽  
Steam Power ◽  
Steam Power Plant ◽  
Operation Process ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Long Operation

Steam power plant Generation of Tanjung Jati B 3rd unit has a capacity of 660 MW. The power plant operational in 2011, because of the long operation process, there will be a decrease in performance. The plant needs to be researched to analyze the performance and losses that occurs in the power plant. Because this also affects the environment if the efficiency of the power plant is high, it can reduce the use of coal. Because coal becomes air pollution and environmental pollution, which can cause acid rain, water pollution, and global warming. This research is used to analyze energy and exergy on the components of a steam power plant. From the results of this research, the largest of destruction exergy boiler is 881.08 MW and the exergetic efficiency is 48.66%. While the rate of the smallest destruction exergy in LPH 3 is 0.6 MW and the exergetic efficiency is 94.45%. The contribution of the largest Losses energy in the boiler is 231 MW and energetic efficiency is 87.05%. While the contribution of the smallest energy Losses in HPH 6 is 0.74 MW and energetic efficiency is 99.23%.

scholarly journals DAMPAK EKONOMI DAN SOSIAL BUDAYA PEMBANGKIT LISTRIK TENAGA UAP (PLTU) TERHADAP MASYARAKAT DI GAMPONG SUAK PUNTONG KABUPATEN NAGAN RAYA

2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Triyanto Triyanto
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Point Of View ◽  
Human Society ◽  
Religious Activities ◽  
Chi Square ◽  
Steam Power ◽  
Steam Power Plant ◽  
Cultural Life ◽  
Chi Square Tests

Anything that is in around of human society always has an influence on the human himself. Similarly, the existence of a steam power plant (PLTU) located in Gampong Suak Puntong Nagan Raya. According to preliminary observations, researcher founds data on the existence of steam power plants have worried the community where some buildings are cracked due to the vibration of the soil during construction, heated air, dust, and wastewater suspected to be the cause of the disease. However, this study examines its impact from an economic and socio-cultural point of view. The formulation of the problem are how is the influence of the existence of PLTU to welfare? and how is the influence of the existence of PLTU to socio-cultural life?.The results showed that PLTU has an effect on improving people's welfare in Suak Puntong. This is proved by Pearson Chi-Square value in Asymp column. Sig. lower than 0.05 so that H0 is rejected and H1 accepted. While the power plant has no influence on the socio-cultural life of the community, this is proved by the value of Pearson Chi-Square in all tables in the Asymp column. Sig. Higher than 0.05, except for the Chi-Square Tests in the steam power plant that had assisted in the construction of the mosque against the religious activities of the community worth 0.000 and less than 0.05. But in general the value of Chi-Square Tests is higher than 0.05 so that H0 is accepted and H1 is rejected.Keywords: PLTU, Suak Puntong, Nagan Raya, Social Culture,

Cracks on the Roots of Turbine Blades of the Low-Pressure Turbine in a Steam Power Plant

2015 ◽  
Vol 52 (4) ◽  
pp. 214-225 ◽  
Author(s):  
E. Plesiutschnig ◽  
R. Vallant ◽  
G. Stöfan ◽  
C. Sommitsch ◽  
M. Mayr ◽  
...  
Keyword(s):  
Power Plant ◽  
Turbine Blades ◽  
Low Pressure ◽  
Steam Power ◽  
Steam Power Plant ◽  
Low Pressure Turbine
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