Analysis of the evaporative towers cooling system of a coal-fired power plant
Апстракт
The paper presents a theoretical analysis of the cooling system of a 110 MW coal-fired power plant located in central Serbia, where eight evaporative towers cool down the plant. An updated research on the evaporative tower cooling system has been carried out to show the theoretical analysis of the tower heat and mass balance, taking into account the sensible and latent heat exchanged during the processes which occur inside these towers. Power plants which are using wet cooling towers for cooling condenser cooling water have higher design temperature of cooling water, thus the designed condensing pressure is higher compared to plants with a once-through cooling system. Daily and seasonal changes further deteriorate energy efficiency of these plants, so it can be concluded that these plants have up to 5% less efficiency compared to systems with once-through cooling. The whole analysis permitted to evaluate the optimal conditions, as far as the operation of the towers is concerned, and to... suggest an improvement of the plant. Since plant energy efficiency improvement has become a quite common issue today, the evaluation of the cooling system operation was conducted under the hypothesis of an increase in the plant overall energy efficiency due to low cost improvement in cooling tower system.
Кључне речи:
energy efficiency / cooling tower / condensing pressureИзвор:
Thermal Science, 2012, 16, S375-S385Издавач:
- Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
DOI: 10.2298/TSCI120426176L
ISSN: 0354-9836
WoS: 000313313300010
Scopus: 2-s2.0-84874809651
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Laković, Mirjana S. AU - Laković, Slobodan V. AU - Banjac, Miloš PY - 2012 UR - https://machinery.mas.bg.ac.rs/handle/123456789/1438 AB - The paper presents a theoretical analysis of the cooling system of a 110 MW coal-fired power plant located in central Serbia, where eight evaporative towers cool down the plant. An updated research on the evaporative tower cooling system has been carried out to show the theoretical analysis of the tower heat and mass balance, taking into account the sensible and latent heat exchanged during the processes which occur inside these towers. Power plants which are using wet cooling towers for cooling condenser cooling water have higher design temperature of cooling water, thus the designed condensing pressure is higher compared to plants with a once-through cooling system. Daily and seasonal changes further deteriorate energy efficiency of these plants, so it can be concluded that these plants have up to 5% less efficiency compared to systems with once-through cooling. The whole analysis permitted to evaluate the optimal conditions, as far as the operation of the towers is concerned, and to suggest an improvement of the plant. Since plant energy efficiency improvement has become a quite common issue today, the evaluation of the cooling system operation was conducted under the hypothesis of an increase in the plant overall energy efficiency due to low cost improvement in cooling tower system. PB - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd T2 - Thermal Science T1 - Analysis of the evaporative towers cooling system of a coal-fired power plant EP - S385 SP - S375 VL - 16 DO - 10.2298/TSCI120426176L ER -
@article{ author = "Laković, Mirjana S. and Laković, Slobodan V. and Banjac, Miloš", year = "2012", abstract = "The paper presents a theoretical analysis of the cooling system of a 110 MW coal-fired power plant located in central Serbia, where eight evaporative towers cool down the plant. An updated research on the evaporative tower cooling system has been carried out to show the theoretical analysis of the tower heat and mass balance, taking into account the sensible and latent heat exchanged during the processes which occur inside these towers. Power plants which are using wet cooling towers for cooling condenser cooling water have higher design temperature of cooling water, thus the designed condensing pressure is higher compared to plants with a once-through cooling system. Daily and seasonal changes further deteriorate energy efficiency of these plants, so it can be concluded that these plants have up to 5% less efficiency compared to systems with once-through cooling. The whole analysis permitted to evaluate the optimal conditions, as far as the operation of the towers is concerned, and to suggest an improvement of the plant. Since plant energy efficiency improvement has become a quite common issue today, the evaluation of the cooling system operation was conducted under the hypothesis of an increase in the plant overall energy efficiency due to low cost improvement in cooling tower system.", publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd", journal = "Thermal Science", title = "Analysis of the evaporative towers cooling system of a coal-fired power plant", pages = "S385-S375", volume = "16", doi = "10.2298/TSCI120426176L" }
Laković, M. S., Laković, S. V.,& Banjac, M.. (2012). Analysis of the evaporative towers cooling system of a coal-fired power plant. in Thermal Science Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 16, S375-S385. https://doi.org/10.2298/TSCI120426176L
Laković MS, Laković SV, Banjac M. Analysis of the evaporative towers cooling system of a coal-fired power plant. in Thermal Science. 2012;16:S375-S385. doi:10.2298/TSCI120426176L .
Laković, Mirjana S., Laković, Slobodan V., Banjac, Miloš, "Analysis of the evaporative towers cooling system of a coal-fired power plant" in Thermal Science, 16 (2012):S375-S385, https://doi.org/10.2298/TSCI120426176L . .