{"title":"Exergetic Analysis of Steam Turbine Power Plant Operated in Chemical Industry","authors":"F. Hafdhi, T. Khir, A. Ben Yahia, A. Ben Brahim","volume":108,"journal":"International Journal of Computer and Systems Engineering","pagesStart":1468,"pagesEnd":1477,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10003334","abstract":"
An Energetic and exergetic analysis is conducted on a
\r\nSteam Turbine Power Plant of an existing Phosphoric Acid Factory.
\r\nThe heat recovery systems used in different parts of the plant are also
\r\nconsidered in the analysis. Mass, thermal and exergy balances are
\r\nestablished on the main compounds of the factory. A numerical code
\r\nis established using EES software to perform the calculations
\r\nrequired for the thermal and exergy plant analysis. The effects of the
\r\nkey operating parameters such as steam pressure and temperature,
\r\nmass flow rate as well as seawater temperature, on the cycle
\r\nperformances are investigated. A maximum Exergy Loss Rate of about 72% is obtained for the
\r\nmelters, followed by the condensers, heat exchangers and the pumps.
\r\nThe heat exchangers used in the phosphoric acid unit present
\r\nexergetic efficiencies around 33% while 60% to 72% are obtained for
\r\nsteam turbines and blower. For the explored ranges of HP steam
\r\ntemperature and pressure, the exergy efficiencies of steam turbine
\r\ngenerators STGI and STGII increase of about 2.5% and 5.4%
\r\nrespectively. In the same way optimum HP steam flow rate values,
\r\nleading to the maximum exergy efficiencies are defined.<\/p>\r\n","references":"[1] Ray T. K., Gupta A., Ganguly R. Exergy-based performance analysis for\r\nproper O&M decisions in a steam power plant. Energy Convers Manage\r\n2010;51:1333\u20131344.\r\n[2] Hou D., Shao S., Zhang Y., Liu S. L., Chen Y., Zhang S. S. Exergy\r\nanalysis of a thermal power plant using a modeling approach. Clean\r\nTech Policy 2012; 14:805\u2013813.\r\n[3] Regulagadda P., Dincer I., Naterer G. F. Exergy analysis of a thermal\r\npower plant with measured boiler and turbine losses. Appl Therm Eng\r\n2010; 30:970\u2013976.\r\n[4] Erdem H. H., Akkaya A. V., Cetin B., Dagdas A., Sevilgen S. H., Sahin\r\nB., Teke I., Gungor C., Atas S. Comparative energetic and exergetic\r\nperformance analyses for coal-fired thermal power plants in turkey. Int J\r\nTherm Sci 2009; 48:2179\u20132186.\r\n[5] Ghannadzadeh A., Hetreux R. T., Baudouin O., Baudet. P, Floquet P.,\r\nJoulia X. General methodology for exergy balance in ProSimPlus\u00ae\r\nprocess simulator. Energy 2012; 44:38\u201359.\r\n[6] Mol\u00e8s F. Thermodynamic analysis of a combined organic Rankine cycle\r\nand vapor compression cycle system activated with low temperature heat\r\nsources using low GWP fluids. Appl Therm Eng 2015; 87:444\u2013453.\r\n[7] Taner T. Optimisation processes of energy efficiency for a drying plant:\r\nA case of study for Turkey. Appl Therm Eng 2015; 80:247\u2013260.\r\n[8] Ali Bolatturk, Ahmet Coskun, Caglar Geredelioglu. Thermodynamic\r\nand exergoeconomic analysis of Cay\u0131rhan thermal power plant. Energy\r\nConvers and Manage 2015; 101:371-378.\r\n[9] Taillon J., Blanchard R. E., Exergy efficiency graphs for thermal power\r\nplants, Energy 2015; 88: 57-66.\r\n[10] Omendra Kumar Singh, S. C. Kaushik. Energy and exergy analysis and\r\noptimization of Kalina cycle coupled with a coal fired steam power\r\nplant. Appl Therm Eng 2013; 51:787-800.\r\n[11] A. Ganjehkaviri, M. N. Mohd jaafar, P. Ahmadi, H. Barzegaravval.\r\nModelling and optimization of combined cycle power plant based on\r\nexergoeconomic and environmental analyses. Appl Therm Eng 2014;\r\n67:566-578.\r\n[12] Gupta M. K., Kaushik S. C. Exergy analysis and investigation for\r\nvarious feed water heaters of direct steam generation solar-thermal\r\npower plant. Renew Energy 2010; 35:1228\u20131235.\r\n[13] Aljundi I. H. Energy and exergy analysis of a steam power plant in\r\nJordan. Appl Therm Eng 2009; 29:324\u2013328.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 108, 2015"}