In this work, in order to reach to low irreversibilities, the energy and exergy have been analyzed in the boiler system of Tabriz power plant. First, it has been done to decrease the irreversibility of system. Second, flow and efficiencies of energy and exergy of the mentioned system have been studied. In the boiler, the energy efficiencies based on lower and higher heating value of fuel are 91.54% and 86.17% respectively. In other hand, the exergy efficiency is 43.98%. Comparing with Rosen and et al., it is demonstrated that, results have a logical agreement with experimental data. Accordingly, the EES used code, have been validated. Furthermore, the gas fired steam power plant efficiency has been increased by the use of irreversibilities reduction and diminution of excess combustion air and/ or the stack-gas temperature. Finally, these have been concluded, overall energy and exergy efficiencies of Tabriz power plant increase 0.497% and 0.46%, respectively when the fraction of excess combustion air decreases from 0.4 to 0.15.Also these efficiencies increase 2.196% nearly when, the stack-gas temperature decreases from 159 to 97 °C.
| Published in | American Journal of Energy Engineering (Volume 3, Issue 4) |
| DOI | 10.11648/j.ajee.20150304.11 |
| Page(s) | 57-65 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Excess Air, Stack Gas, Exergy Efficiency, Energy Efficiency, Boiler, Tabriz Power Plant
| [1] | Rosen, M.A., Tang, R., Improving steam power plant efficiency through exergy analysis: effects of altering excess combustion air and stack-gas temperature, Int. J. Exergy, 5 (2008), No. 1, pp. 31–51 |
| [2] | Dincer, I., Al-Muslim, H., Thermodynamic analysis of reheat cycle steam power plants. Int.J. Energy Res, 25 (2001), pp. 727-739 |
| [3] | Gallo, W.L.R., Milanez. L.F., Choice of a reference state for exergetic analysis, Energy, 15 (1990), pp. 113–121 |
| [4] | Habib, M.A., Zubair, S.M., Second-law-based thermodynamic analysis of regenerative-reheat Rankine cycle power plants, Energy, 17 (1992), pp. 295–301 |
| [5] | Cihan, A., et al., Energy-exergy analysis and modernization suggestions for a combined-cycle power plant. Int. J. Energy Res., 30 (2006), pp. 115–126 |
| [6] | Song, T.W., et al., Exergybased performance analysis of the heavy-duty gas turbine in part-load operating conditions, Exergy, 2 (2002), 20, pp. 105–112 |
| [7] | ERC, In: How to save energy and money in boilers and furnace systems. Energy Res. Centre (ERC) (2004), University of Cape Town, South Africa |
| [8] | Jayamaha, Lal, In: Energy Efficient Building Systems, Hardbook. Mcgraw Hill education, Europe, 2008. |
| [9] | Cownden, R., et al., Exergy analysis of a fuel cell power system for transportation applications, Exergy, An Int. J. 1 (2001), pp. 112–121 |
| [10] | Assari, M. R., et al., Exergy Modeling and Performance Evaluation of Pulp and Paper Production Process of Bagasse, a Case Study, Thermal Science, 18 (2014), 4, pp. 1399-1412 |
| [11] | Thavamani, S., et al., Increasing Boiler Efficiency through Intelligent Combustion Optimization, Proceedings, 20th Nuclear Engineering and the ASME 2012 Power Conf., California, USA, 2012, Vol. 4, pp. 753-761 |
| [12] | Sonia, Y., et al., a centurial history of technological change and learning curves for pulverized coal-fired utility boilers. Energy, 3 (2008), pp. 1996–2005 |
| [13] | Grimaldi, C.N., Bidini, G., Using exergy analysis on circulating fluidised bed boilers, International Journal of Energy, Environment, Economics, 2 (1992), No. 3, pp.205–213. |
| [14] | Rosen, M.A., Dincer, I., Survey of thermodynamic methods to improve the efficiency of coal-fired electricity generation, Proc. Instn Mech. Engrs Part A: J. Power and Energy, 217 (2003a), pp.63–73. |
| [15] | Sciubba, E., Su, T.M., Second law analysis of the steam turbine power cycle: a parametric study, Computer-Aided Engineering of Energy Systems, ASME, AES-Vol. 2–3 (1986), pp.151–165. |
| [16] | [16] Rosen, M.A., Tang, R., Assessing and improving the efficiencies of a steam power plant using exergy analysis. Part 1: assessment, Int. J. Exergy, Vol. 3 (2006a), No. 4, pp.362–376. |
| [17] | Rosen, M.A., Tang, R., Assessing and improving the efficiencies of a steam power plant using exergy analysis. Part 2: improvements from modifying reheat pressure, Int. J. Exergy, Vol. 3 (2006b), No. 4, pp. 377–390. |
| [18] | Cengel, Y.A., Boles, M.A., Thermodynamics: An Engineering Approach, 5th ed., McGraw-Hill, Boston, 2006. |
| [19] | Moran, M.J., Shapiro, H.N., Fundamentals of Engineering Thermodynamics, 5th ed., Wiley, New York, 2003. |
| [20] | Rezac, P., Metghalchi, H., A brief note on the historical evolution and present state of exergy analysis, International Journal of Exergy, Vol. 1 (2004), pp. 426–437. |
| [21] | Kamimura, F., Method and apparatus for treating flue gases from coal combustion using precoat agent with heat exchange, Fuel and Energy Abstracts 38 (1997), pp. 449. |
| [22] | Kitto, J.B., Piepho, J.M., Making aging coal-fired boilers low-cost competitors, Power 139 (1995), No. 12, pp.21–26. |
APA Style
Sajjad Arefdehgani, Omid Karimi Sadaghiyani. (2015). Boiler Parametric Study of Thermal Power Plant to Opproach to Low Irreversibility. American Journal of Energy Engineering, 3(4), 57-65. https://doi.org/10.11648/j.ajee.20150304.11
ACS Style
Sajjad Arefdehgani; Omid Karimi Sadaghiyani. Boiler Parametric Study of Thermal Power Plant to Opproach to Low Irreversibility. Am. J. Energy Eng. 2015, 3(4), 57-65. doi: 10.11648/j.ajee.20150304.11
AMA Style
Sajjad Arefdehgani, Omid Karimi Sadaghiyani. Boiler Parametric Study of Thermal Power Plant to Opproach to Low Irreversibility. Am J Energy Eng. 2015;3(4):57-65. doi: 10.11648/j.ajee.20150304.11
Share This Article
Twitter
Linked In
Facebook
Copy
Download@article{10.11648/j.ajee.20150304.11,
author = {Sajjad Arefdehgani and Omid Karimi Sadaghiyani},
title = {Boiler Parametric Study of Thermal Power Plant to Opproach to Low Irreversibility},
journal = {American Journal of Energy Engineering},
volume = {3},
number = {4},
pages = {57-65},
doi = {10.11648/j.ajee.20150304.11},
url = {https://doi.org/10.11648/j.ajee.20150304.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajee.20150304.11},
abstract = {In this work, in order to reach to low irreversibilities, the energy and exergy have been analyzed in the boiler system of Tabriz power plant. First, it has been done to decrease the irreversibility of system. Second, flow and efficiencies of energy and exergy of the mentioned system have been studied. In the boiler, the energy efficiencies based on lower and higher heating value of fuel are 91.54% and 86.17% respectively. In other hand, the exergy efficiency is 43.98%. Comparing with Rosen and et al., it is demonstrated that, results have a logical agreement with experimental data. Accordingly, the EES used code, have been validated. Furthermore, the gas fired steam power plant efficiency has been increased by the use of irreversibilities reduction and diminution of excess combustion air and/ or the stack-gas temperature. Finally, these have been concluded, overall energy and exergy efficiencies of Tabriz power plant increase 0.497% and 0.46%, respectively when the fraction of excess combustion air decreases from 0.4 to 0.15.Also these efficiencies increase 2.196% nearly when, the stack-gas temperature decreases from 159 to 97 °C.},
year = {2015}
}
TY - JOUR T1 - Boiler Parametric Study of Thermal Power Plant to Opproach to Low Irreversibility AU - Sajjad Arefdehgani AU - Omid Karimi Sadaghiyani Y1 - 2015/06/03 PY - 2015 N1 - https://doi.org/10.11648/j.ajee.20150304.11 DO - 10.11648/j.ajee.20150304.11 T2 - American Journal of Energy Engineering JF - American Journal of Energy Engineering JO - American Journal of Energy Engineering SP - 57 EP - 65 PB - Science Publishing Group SN - 2329-163X UR - https://doi.org/10.11648/j.ajee.20150304.11 AB - In this work, in order to reach to low irreversibilities, the energy and exergy have been analyzed in the boiler system of Tabriz power plant. First, it has been done to decrease the irreversibility of system. Second, flow and efficiencies of energy and exergy of the mentioned system have been studied. In the boiler, the energy efficiencies based on lower and higher heating value of fuel are 91.54% and 86.17% respectively. In other hand, the exergy efficiency is 43.98%. Comparing with Rosen and et al., it is demonstrated that, results have a logical agreement with experimental data. Accordingly, the EES used code, have been validated. Furthermore, the gas fired steam power plant efficiency has been increased by the use of irreversibilities reduction and diminution of excess combustion air and/ or the stack-gas temperature. Finally, these have been concluded, overall energy and exergy efficiencies of Tabriz power plant increase 0.497% and 0.46%, respectively when the fraction of excess combustion air decreases from 0.4 to 0.15.Also these efficiencies increase 2.196% nearly when, the stack-gas temperature decreases from 159 to 97 °C. VL - 3 IS - 4 ER -
Information
Email: