Iterative Thermal Design Modelling and Performance Analysis of Superheater-desuperheater System at a Steam Boiler Using Mathcad Software
Abstract
In this paper, iterative thermal design model of a superheater-desuperheater system mounted a steam boiler working at pressure of 7.5 bar(g) was completed using Mathcad and findings were interpreted with performance analysis. Aim of the desuperheater (atemperator) in the system is to reduce steam temperature to desired values at superheater outlet. Boiler system having Superheater-desuperheater was also investigated at load cases of %100, %80, %60, %50 and %40, and then, this model was prepared with system scenario containing a superheater without desuperheater in terms of boiler and superheater heat values. As a result of the study, it was determined that desuperheater addition has a positive effect on system heat capacity under proper load cases. Based on the study results, it was commented that superheater-desuperheater addition not only can be used because of construction limitations but can be preferred in order to increase boiler efficiency as well.
References
- [1] Topal O., "Bir Demir Çelik Fabrikasının Kojenerasyonu Matlab ile Modellenmesi", Bitirme Tezi, Yıldız Teknik Üniversitesi Elektrik-Elektronik Fakültesi Elektrik Mühendisliği Bölümü, İstanbul, (2007)[2] Kim J-S., Lee K-W., Kim J-E., Choi J-Y., Lee J-Y., "Numerical Analysis of Atomizing Desuperheater Control Valve for Power Plants", 6th International Symposium on the Fusion of Science and Technologies (ISFT2017), Jeju, 1-4, (2017)[3] Karuppiah T., Periasamy A., Rajkumar P., Muruganand S., "Desuperheater Temperature Control System Using Distributed Control System (DCS) ", International Journal on Recent and Innovation Trends in Computing and Communication, 01: 587-591, (2013)[4] Borzsony P., Sherikar S.V., "Advances in Desuperheating Technology for Reliable Performance of Combined Cycle Power Plants (CCPP)", Proceedings of PWR2005 ASME Power, Chicago, 1-9, (2005)[5] Bovat Jr P.M., "Computational Analysis of Water Atomization in Spray Desuperheaters of Steam Boilers", Yüksek Lisans, Rensselaer Polytechnic Institute, (2013) [6] Sunny J., Kumar G.S., "Design Optimization of Thermal Sleeves for Desuperheating Applications", International Journal For Ignited Minds, 04: 52-60, (2017) [7] Kouhikamali R., Hesami H., Ghavamian A., " Convective heat transfer in a mixture of cooling water and superheated steam ", International Journal of Thermal Sciences, 60: 205-2011, (2012)[8] Rahimi E., Torfeh S., Kouhikamali R., "Numerical study of counter-current desuperheaters in thermal desalination units", Desalination, 397: 140-150, (2016)[9] Ebrahimian V., Gorji-Bandpy M., "Two-dimensional modeling of water spray cooling in superheated steam", Thermal Science, 12: 79-88, (2008)[10] Cho B., Choi G., Uruno Y., Kim H., Chung J., Kim H., Lee K., "One-dimensional simulation for attemperator based on commissioning data of coal-fired steam power plant", Applied Thermal Engineering,113: 508-508, (2017)[11] Uruno Y., Choi G., Sung M., Chung J., Kim H., Lee K., "Transient analysis of attemperator enthalpy balance based on the commissioning data of a coal-fired steam power plant", Applied Thermal Engineering, 150: 1141-1158, (2019)[12] Zima W., "Simulation of dynamics of a boiler steam superheater with an attemperator", Proceedings of the Institution of Mechanical Engineers Part A Journal of Power and Energy, 220: 793-801, (2006)[13] Çengel Y.A., Boles M.A., "Thermodynamics : an engineering approach”, 8th Edition, McGraw-Hill Education, ISBN 978-0-07-339817-4, New York, (2015)[14] Münzinger F., "Dampfkraft", 3rd Edition, Springer-Verlag Berlin Heidelberg, ISBN 978-3-642-53056-2 (eBook), Berlin, (1949)[15] Holman J.P., "Heat Transfer”, 10th Edition, McGraw-Hill Book Co, ISBN 978–0–07–352936–3, New York, (2010)
Bir Buhar Kazanındaki Kızdırıcı – Atemperatör Sisteminin Mathcad Yazılımı ile İteratif Isıl Tasarım Modellemesi ve Performans Analizi
Abstract
Bu çalışmada, 7,5 bar(g) çalışma basıncına sahip bir buhar kazanına monte edilen bir kızdırıcı-atemperatör sisteminin iteratif ısıl tasarım modeli Mathcad yazılımı ile gerçekleştirilmiş ve elde edilen bulgular performans analizi ile yorumlanmıştır. Atemperatörün sistemdeki görevi kızdırıcı çıkışı buhar sıcaklığını istenilen sıcaklığa düşürmektir. Kızdırıcı-Atemperatör ikilisine sahip kazan sistemi; %100, %80, %60, %50 ve %40 yük koşulları altında incelenen bu sistem, atemperatörsüz bir kızdırıcıya sahip kazan sistemiyle de kazan ve kızdırıcı ısı kapasitesi açısından karşılaştırılmıştır. Bu çalışmalar sonucunda atemperatör eklentisinin, sistem ısı kapasitesine doğru yük şartları uygulandığında olumlu etki gösterdiği belirlenmiştir. Çalışma verilerine dayanarak, doğru yük şartları altındaki kızdırıcı-atemperatör eklentisinin yalnızca konstrüksiyon kısıtlamaları nedeniyle değil, aynı zamanda kazan verimini arttırmak amacıyla da kullanılabileceği yorumu yapılmıştır.
Keywords
References
- [1] Topal O., "Bir Demir Çelik Fabrikasının Kojenerasyonu Matlab ile Modellenmesi", Bitirme Tezi, Yıldız Teknik Üniversitesi Elektrik-Elektronik Fakültesi Elektrik Mühendisliği Bölümü, İstanbul, (2007)[2] Kim J-S., Lee K-W., Kim J-E., Choi J-Y., Lee J-Y., "Numerical Analysis of Atomizing Desuperheater Control Valve for Power Plants", 6th International Symposium on the Fusion of Science and Technologies (ISFT2017), Jeju, 1-4, (2017)[3] Karuppiah T., Periasamy A., Rajkumar P., Muruganand S., "Desuperheater Temperature Control System Using Distributed Control System (DCS) ", International Journal on Recent and Innovation Trends in Computing and Communication, 01: 587-591, (2013)[4] Borzsony P., Sherikar S.V., "Advances in Desuperheating Technology for Reliable Performance of Combined Cycle Power Plants (CCPP)", Proceedings of PWR2005 ASME Power, Chicago, 1-9, (2005)[5] Bovat Jr P.M., "Computational Analysis of Water Atomization in Spray Desuperheaters of Steam Boilers", Yüksek Lisans, Rensselaer Polytechnic Institute, (2013) [6] Sunny J., Kumar G.S., "Design Optimization of Thermal Sleeves for Desuperheating Applications", International Journal For Ignited Minds, 04: 52-60, (2017) [7] Kouhikamali R., Hesami H., Ghavamian A., " Convective heat transfer in a mixture of cooling water and superheated steam ", International Journal of Thermal Sciences, 60: 205-2011, (2012)[8] Rahimi E., Torfeh S., Kouhikamali R., "Numerical study of counter-current desuperheaters in thermal desalination units", Desalination, 397: 140-150, (2016)[9] Ebrahimian V., Gorji-Bandpy M., "Two-dimensional modeling of water spray cooling in superheated steam", Thermal Science, 12: 79-88, (2008)[10] Cho B., Choi G., Uruno Y., Kim H., Chung J., Kim H., Lee K., "One-dimensional simulation for attemperator based on commissioning data of coal-fired steam power plant", Applied Thermal Engineering,113: 508-508, (2017)[11] Uruno Y., Choi G., Sung M., Chung J., Kim H., Lee K., "Transient analysis of attemperator enthalpy balance based on the commissioning data of a coal-fired steam power plant", Applied Thermal Engineering, 150: 1141-1158, (2019)[12] Zima W., "Simulation of dynamics of a boiler steam superheater with an attemperator", Proceedings of the Institution of Mechanical Engineers Part A Journal of Power and Energy, 220: 793-801, (2006)[13] Çengel Y.A., Boles M.A., "Thermodynamics : an engineering approach”, 8th Edition, McGraw-Hill Education, ISBN 978-0-07-339817-4, New York, (2015)[14] Münzinger F., "Dampfkraft", 3rd Edition, Springer-Verlag Berlin Heidelberg, ISBN 978-3-642-53056-2 (eBook), Berlin, (1949)[15] Holman J.P., "Heat Transfer”, 10th Edition, McGraw-Hill Book Co, ISBN 978–0–07–352936–3, New York, (2010)
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Engineering |
| Journal Section | Research Article |
| Authors | |
| Publication Date | June 1, 2020 |
| Submission Date | February 27, 2019 |
| Published in Issue | Year 2020 |
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