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Spreyleme Yöntemi ile Soğutulan Yarı Kapalı Bir Gaz Çevriminin Modellenmesi ve Performansının İncelenmesi

Yıl 2021, Cilt: 4 Sayı: 2, 130 - 138, 31.12.2021

Öz

Güç üretiminin yanısıra soğutma ve temiz su eldesi sağlayan yeni nesil PoWER çevriminin performansı günümüzde incelemeye tabi olmaktadır. Bu çevrim temel olarak yüksek basnıçta geri beslemeli olarak çalışan HPRTE çevrimi ve buhar absorpsiyonlu soğutma çevrimi olan VARS çevriminin birleşimi olarak tasarlanmıştır. HPRTE sisteminde yakılan gazın bir kısmı sisteme geri kazanılarak verimden kazanç sağlanmakta ve faydalı atık ısı VARS elemanları tarafından kullanılmaktadır. Bu gaz çevrimin termal verimi yüksek basınç kompresörü girişinde akışkan sıcaklığı suyun donma sıcaklığı altına düşürülerek yükseltilebilir. Etilen glikol ve su karışımı gaz ortamına direkt olarak spreyleme yapılabilir. Bu sayede hem kurutma hem de soğutma işlemi yapılmış olur. Etilen glikol düşük buharlaşma basıncı olduğu için modellemede göz önüne alınmıştır. Çevrimlerin simülasyonu bilgisayar modeli ile yapılmakta olup soğutmanın sadece VARS tarafından ve VARS ile beraber spreyleme ile ortak yapıldığı durumları kıyaslamak için tasarlanmıştır. Geri beslemeli gaz çevriminde iki büyüklükte gaz motoru olduğu durum düşünülmüştür. Etilen glikol konsantrasyonunun yüzde 60 bileşende olduğu spreyleme yöntemi ile soğutmada orta ölçekte gaz motoru taşıyan sistemde termal verimin yüzde 2.2 oranında, küçük ölçekte gaz motoru taşıyan sistemde yüzde 2.7 oranında arttığı hesaplanmıştır.

Kaynakça

  • [1] Çengel, Y.A., M.A. Boles, and M. Kanoglu, Thermodynamics: An Engineering Approach. Boston: McGraw-Hill Higher Education, 2020.
  • [2] Smoot, L.D. and L.L. Baxter, ‘Fossil Fuel Power Stations—Coal Utilization’ in Encyclopedia of Physical Science and Technology (Third Edition), Academic Press, 2003, pp. 121-144.
  • [3] Anxionnaz, R., ‘Installation a turbines a gaz a circuit semi-ouvert.’ French Patent 999–133, 1945.
  • [4] Anxionnaz, R., ‘Improvements in or relating to gas turbine plant with semi-open circuit.’ British Patent 651–166, 1948.
  • [5] Gasparovic, N., ‘The Advantage of Semi-Closed Cycle Gas Turbines for Naval Ship Propulsion,’ Naval Engineers Journal, 1968.
  • [6] DeWitt, S.H. and W.B. Boyum, ‘Internally Fired Semi-Closed Cycle Gas Turbine Plant for Naval Propulsion,’ in ASME 1956 Gas Turbine Power Conference, 1956.
  • [7] Lear, W., A. Laganelli, and P. Senick, ‘High Pressure Regenerative Turbine Engine: 21st Century Propulsion,’ NASAjCR-2001-210675, Hanover, MD(United States), 2001.
  • [8] Khan, J.R., ‘Modeling and optimization of a novel pressurized CHP system with water extraction and refrigeration,’ International Journal of Energy Research, vol. 32, pp. 735-751, 2008.
  • [9] MacFarlane, R., et al., ‘System impact of H2O production and injection on a novel semi-closed cycle gas turbine,’ in 35th Aerospace Sciences Meeting and Exhibit, American Institute of Aeronautics and Astronautics, 1997.
  • [10] Lear, W.E. and S.A. Sherif, ‘Combined cooling and power plant with water extraction,’ US Patent, US7472550B2, 2009.
  • [11] Khan, J.R., et al., ‘Testing and Modeling of a Semi-Closed Gas Turbine Cycle Integrated With a Vapor Absorption Refrigeration System,’ in ASME 2006 International Mechanical Engineering Congress and Exposition, 2006, p. 137-148.
  • [12] Nemec, T.S. and W.E. Lear, ‘Thermodynamic Design Point Study of a Semi-Closed Recuperated Intercooled Gas Turbine Combined With a Rankine Bottoming Cycle,’ in ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, 1996.
  • [13] Boza, J.J., W.E. Lear, and S.A. Sherif, ‘Performance of a Novel Semiclosed Gas-Turbine Refrigeration Combined Cycle,’ Journal of Energy Resources Technology, vol. 130, 2008.
  • [14] Khan, J.R., ‘Modeling and experimentation of a novel pressurized CHP system with water extraction,’ International Journal of Energy Research, vol. 32 pp. 1030-1046, 2008.
  • [15] Ryu, C.J., ‘Modeling and control of a novel semi-closed gas turbine-absorption combined cycle,’ University of Florida, Gainesville, Fla, 2011.
  • [16] Boyce, M.P., Gas Turbine Engineering Handbook (Third Edition), Burlington: Gulf Professional Publishing, 2006.
  • [17] Soares, C., Gas Turbines: A Handbook of Air, Land, and Sea Applications, Boston : Butterworth-Heinemann, 2008.
  • [18] Chung, T.-W. and C.-M. Luo, ‘Vapor Pressures of the Aqueous Desiccants,’ Journal of Chemical & Engineering Data, vol. 44, pp. 1024-1027, 1999.
  • [19] Chen, S.-Y., A.N. Soriano, and M.-H. Li, ‘Densities and vapor pressures of mixed-solvent desiccant systems containing {glycol (diethylene, or triethylene, or tetraethylene glycol)+salt (magnesium chloride)+water},’ The Journal of Chemical Thermodynamics, vol. 42, pp. 1163-1167, 2010.
  • [20] Traverso, A., et al., ‘A Novel Web-Based Approach for Thermoeconomic Analysis and Optimization of Conventional and Innovative Cycles,’ in ASME Turbo Expo 2004: Power for Land, Sea, and Air, pp. 623-631, 2004.

Modelling and Performance Investigation of Semi-Closed Gas Turbine Cycle with Spray Cooling

Yıl 2021, Cilt: 4 Sayı: 2, 130 - 138, 31.12.2021

Öz

The performance of a novel system, Power, Water Extraction, and Refrigeration cycle (PoWER), has been under investigation recently which is a combination of high-pressure regenerative turbine engine cycle (HPRTE) and a vapor absorption refrigeration system cycle (VARS). After the burned gas expand in the turbine, some portion is mixed with the pressurized fresh air and taken back into the cycle. Some of the waste heat is used by VARS through several heat exchangers. By this way external cooling load can be efficiently obtained. The efficiency of the semi-closed gas cycle can be further improved by achieving below-freezing temperatures of pure water at the high-pressure compressor inlet. Solution of ethylene glycol and water can be directly sprayed into the gas stream to both dry and to lower the temperature of the gas flow simultaneously. The computer model of the PoWER cycle with simple VARS model by considering second-law thermal efficiency and glycol cycle are used to compare the thermal efficiencies of the system when cooling is only accomplished by VARS and cooling is accomplished with both VARS and spraying aqueous glycol solution into the gas stream. Ethylene glycol is used as desiccant since it has very low vapor pressure and has a relatively low freezing point. Two systems with gas engines in different scales are investigated for this purpose. By enabling spray cooling the overall thermal efficiency of the system with medium size engine can be increased by 2.2%, whereas the efficiency of the system with the small size engine can be increased by 2.7% by using glycol-water solution with 60% ethylene glycol concentration.

Kaynakça

  • [1] Çengel, Y.A., M.A. Boles, and M. Kanoglu, Thermodynamics: An Engineering Approach. Boston: McGraw-Hill Higher Education, 2020.
  • [2] Smoot, L.D. and L.L. Baxter, ‘Fossil Fuel Power Stations—Coal Utilization’ in Encyclopedia of Physical Science and Technology (Third Edition), Academic Press, 2003, pp. 121-144.
  • [3] Anxionnaz, R., ‘Installation a turbines a gaz a circuit semi-ouvert.’ French Patent 999–133, 1945.
  • [4] Anxionnaz, R., ‘Improvements in or relating to gas turbine plant with semi-open circuit.’ British Patent 651–166, 1948.
  • [5] Gasparovic, N., ‘The Advantage of Semi-Closed Cycle Gas Turbines for Naval Ship Propulsion,’ Naval Engineers Journal, 1968.
  • [6] DeWitt, S.H. and W.B. Boyum, ‘Internally Fired Semi-Closed Cycle Gas Turbine Plant for Naval Propulsion,’ in ASME 1956 Gas Turbine Power Conference, 1956.
  • [7] Lear, W., A. Laganelli, and P. Senick, ‘High Pressure Regenerative Turbine Engine: 21st Century Propulsion,’ NASAjCR-2001-210675, Hanover, MD(United States), 2001.
  • [8] Khan, J.R., ‘Modeling and optimization of a novel pressurized CHP system with water extraction and refrigeration,’ International Journal of Energy Research, vol. 32, pp. 735-751, 2008.
  • [9] MacFarlane, R., et al., ‘System impact of H2O production and injection on a novel semi-closed cycle gas turbine,’ in 35th Aerospace Sciences Meeting and Exhibit, American Institute of Aeronautics and Astronautics, 1997.
  • [10] Lear, W.E. and S.A. Sherif, ‘Combined cooling and power plant with water extraction,’ US Patent, US7472550B2, 2009.
  • [11] Khan, J.R., et al., ‘Testing and Modeling of a Semi-Closed Gas Turbine Cycle Integrated With a Vapor Absorption Refrigeration System,’ in ASME 2006 International Mechanical Engineering Congress and Exposition, 2006, p. 137-148.
  • [12] Nemec, T.S. and W.E. Lear, ‘Thermodynamic Design Point Study of a Semi-Closed Recuperated Intercooled Gas Turbine Combined With a Rankine Bottoming Cycle,’ in ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition, 1996.
  • [13] Boza, J.J., W.E. Lear, and S.A. Sherif, ‘Performance of a Novel Semiclosed Gas-Turbine Refrigeration Combined Cycle,’ Journal of Energy Resources Technology, vol. 130, 2008.
  • [14] Khan, J.R., ‘Modeling and experimentation of a novel pressurized CHP system with water extraction,’ International Journal of Energy Research, vol. 32 pp. 1030-1046, 2008.
  • [15] Ryu, C.J., ‘Modeling and control of a novel semi-closed gas turbine-absorption combined cycle,’ University of Florida, Gainesville, Fla, 2011.
  • [16] Boyce, M.P., Gas Turbine Engineering Handbook (Third Edition), Burlington: Gulf Professional Publishing, 2006.
  • [17] Soares, C., Gas Turbines: A Handbook of Air, Land, and Sea Applications, Boston : Butterworth-Heinemann, 2008.
  • [18] Chung, T.-W. and C.-M. Luo, ‘Vapor Pressures of the Aqueous Desiccants,’ Journal of Chemical & Engineering Data, vol. 44, pp. 1024-1027, 1999.
  • [19] Chen, S.-Y., A.N. Soriano, and M.-H. Li, ‘Densities and vapor pressures of mixed-solvent desiccant systems containing {glycol (diethylene, or triethylene, or tetraethylene glycol)+salt (magnesium chloride)+water},’ The Journal of Chemical Thermodynamics, vol. 42, pp. 1163-1167, 2010.
  • [20] Traverso, A., et al., ‘A Novel Web-Based Approach for Thermoeconomic Analysis and Optimization of Conventional and Innovative Cycles,’ in ASME Turbo Expo 2004: Power for Land, Sea, and Air, pp. 623-631, 2004.
Toplam 20 adet kaynakça vardır.

Ayrıntılar

Birincil Dil İngilizce
Konular Mühendislik, Makine Mühendisliği
Bölüm Araştırma Makaleleri
Yazarlar

Erman Kadir Öztekin 0000-0002-8036-7659

William E. Lear Bu kişi benim 0000-0002-0072-8443

Yayımlanma Tarihi 31 Aralık 2021
Yayımlandığı Sayı Yıl 2021 Cilt: 4 Sayı: 2

Kaynak Göster

APA Öztekin, E. K., & Lear, W. E. (2021). Modelling and Performance Investigation of Semi-Closed Gas Turbine Cycle with Spray Cooling. Bayburt Üniversitesi Fen Bilimleri Dergisi, 4(2), 130-138.
AMA Öztekin EK, Lear WE. Modelling and Performance Investigation of Semi-Closed Gas Turbine Cycle with Spray Cooling. Bayburt Üniversitesi Fen Bilimleri Dergisi. Aralık 2021;4(2):130-138.
Chicago Öztekin, Erman Kadir, ve William E. Lear. “Modelling and Performance Investigation of Semi-Closed Gas Turbine Cycle With Spray Cooling”. Bayburt Üniversitesi Fen Bilimleri Dergisi 4, sy. 2 (Aralık 2021): 130-38.
EndNote Öztekin EK, Lear WE (01 Aralık 2021) Modelling and Performance Investigation of Semi-Closed Gas Turbine Cycle with Spray Cooling. Bayburt Üniversitesi Fen Bilimleri Dergisi 4 2 130–138.
IEEE E. K. Öztekin ve W. E. Lear, “Modelling and Performance Investigation of Semi-Closed Gas Turbine Cycle with Spray Cooling”, Bayburt Üniversitesi Fen Bilimleri Dergisi, c. 4, sy. 2, ss. 130–138, 2021.
ISNAD Öztekin, Erman Kadir - Lear, William E. “Modelling and Performance Investigation of Semi-Closed Gas Turbine Cycle With Spray Cooling”. Bayburt Üniversitesi Fen Bilimleri Dergisi 4/2 (Aralık 2021), 130-138.
JAMA Öztekin EK, Lear WE. Modelling and Performance Investigation of Semi-Closed Gas Turbine Cycle with Spray Cooling. Bayburt Üniversitesi Fen Bilimleri Dergisi. 2021;4:130–138.
MLA Öztekin, Erman Kadir ve William E. Lear. “Modelling and Performance Investigation of Semi-Closed Gas Turbine Cycle With Spray Cooling”. Bayburt Üniversitesi Fen Bilimleri Dergisi, c. 4, sy. 2, 2021, ss. 130-8.
Vancouver Öztekin EK, Lear WE. Modelling and Performance Investigation of Semi-Closed Gas Turbine Cycle with Spray Cooling. Bayburt Üniversitesi Fen Bilimleri Dergisi. 2021;4(2):130-8.

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