Analysis of ejector expansion refrigeration cycle with two phase flow ejector

The aim of this study is to determine the operational characteristics of an ejector expansion refrigeration cycle (EERC) working with refrigerant R134a. A constant-area two phase flow ejector at critical mode is modeled to determine the effect of condenser pressure (Pcond) and evaporator pressure (Pevap) on the performance parameters of EERC: ejector expansion factor (EEF) and coefficient of performance (COP). Additionally, since it is possible to use the EERC for different cooling requirements, variation of COP and EEF with evap . Q is also investigated. For this purpose, a simulation program is developed using EES software. The two-phase/compressible fluid flow in the ejector is analyzed accounting for real gas behavior of the refrigerant. Extensive details of mathematical modeling and applied computational procedure are also presented in the study.

İki fazlı ejektör kullanan ejektörlü soğutma çevriminin analizi

Bu çalışmanın amacı, R134a soğutucu akışkan ile çalışan bir ejektör genleşme soğutma çevriminin (EERC) çalışma karakteristiklerinin belirlenmesidir. Kritik modda çalışan, iki fazlı ve sabit alanlı bir ejektör, yoğuşturucu basıncı (Pcond) ve buharlaştırıcı basıncının (Pevap), ejektör genleşme faktörü (EEF) ve performans katsayısı (COP) üzerindeki etkilerinin belirlenmesi için modellenmiştir. EERC'nin farklı soğutma yükü ihtiyaçlarında kullanılması mümkün olduğundan, COP ve EEF'’nin soğutma kapasitesi ( evap . Q )'ne bağlı değişimleri de incelenmiştir. Bu amaçla, EES programı kullanılarak bir simülasyon programı geliştirilmiştir. Ejektör içindeki iki fazlı/sıkıştırılabilir akış modellenirken soğutucunun gerçek gaz davranışı hesaba katılmıştır. Geliştirilen matematiksel model ve hesaplama prosedürü detayları ile sunulmuştur.

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J. Sarkar, "Geometric parameter optimization of ejector expansion refrigeration cycle with natural refrigerants," Int. J. Energy Res., vol. 34, pp. 84-94, 2010.

N. Lawrence and S. Elbel, "Experimental and analytical investigation of automotive ejector air conditioning cycles using lowpressure refrigerants," in Proceedings of Int. Air Conditioning and Refrigeration Conference, Purdue, West Lafayette, USA, 2012.

S. Gurulingam, A. Kalaisselvane and N. Alagumurthy, "Performance Improvement of Forced Draught Jet Ejector Using Constant Rate Momentum Change Method," International Journal of Engineering and Advanced Technology, vol. 2, pp. 149-153, 2012.

D. Li, "Investigation of An EjectorExpansion Device in A Transcritical Carbon Dioxide Cycle For Military Ecu Applications," West Lafayette, Indiana, USA, 2006.

B. J. Huang, J. M. Chang, C. P. Wang and V. A. Petrenko, "A 1-D analysis of ejector performance," Int. J. Refrig., vol. 22, pp. 354-364, 1999.

W. Chen, M. Liu, D. Chong, J. Yan, A. B. Little and Y. Bartosiewicz, "A 1D model to predict ejector performance at critical and sub-critical operational regimes," International Journal of Refrigeration, vol. 36, pp. 1750-1761, 2013.

L. Boumara and L. André, "Modeling of an ejector refrigerating system operating in dimensioning and off-dimensioning conditions with the working fluids R142b and R600a," Applied Thermal Engineering, vol. 29, p. 265–274, 2009.

B. J. Huang and J. M. Chang, "Empirical correlation for ejector design," International Journal of Refrigeration, vol. 22, p. 379– 388, 1999.

J. T. Munday and D. F. Bagster, "A new ejector theory applied to steam jet refrigeration," Ind. Engng Chem. Process Des. Dev., vol. 16, p. 442–449, 1977.

I. W. Eames, S. Aphornratana and H. Haider, "A theoretical and experimental study of a small-scale steam jet refrigerator," International Journal of Refrigeration, vol. 18, p. 378–386, 1995.

N. H. Gay, "Refrigerating System". US Patent 1,836,318, 1931.

C. A. Kemper, G. F. Harper and G. A. Brown, "Multiple-phase ejector refrigeration system". US Patent 3,277,660, 1966.

A. B. Newton, "Capacity control for multiple-phase ejector refrigeration systems". U.S. Patent 3,670,519, 1972.

A. B. Newton, "Control for multiple-phase ejector refrigeration systems". U.S. Patent 3,701,264, 1972.

A. A. Kornhauser, "The use of an ejector as a refrigerant expander," in Proc. of the 1990 USNC/IIR-Purdue Refrigeration Conference, West Lafayette, USA, 1990.

P. A. Domanski, "Theoretical Evaluation of the Vapor Compression Cycle With a Liquid-Line/ Suction-Line Heat Exchanger, Economizer, and Ejector," 1995. [Online]. Available: http://citeseerx.ist.psu.edu/viewdoc/downlo ad?doi=10.1.1.600.603&rep=rep1&type=pd f.

E. Nehdi, L. Kairouani and M. Bouzaina, "Performance analysis of the vapour compression cycle using ejector as expander," International Journal of Energy Research, vol. 31, pp. 364-375, 2007.

G. S. Harrell and A. A. Kornhauser, "Performance tests of a two phase ejector," in Proc. of 30th Intersociety Energy Conversion Engineering Conference, Orlando, FL, U.S.A., 1995.

M. Nakagawa, T. Matumi, H. Takeuchi and N. Kokubo, "Mixing of the confined jet of mist flow," JSME International Journal - Series B, vol. 39, pp. 381-386, 1996.

M. Nakagawa and H. Takeuchi, "Performance of two-phase ejector in refrigeration cycle," in Proc. of the 3rd International Conference on Multiphase Flow, Lyon, France, 1998.

S. Disawas and S. Wongwises, "M. Nakagawa and H. Takeuchi, “Performance of two-phase ejector in refrigeration cycle”, in Proc. of the 3rd International Conference on Multiphase Flow, Lyon, France, 1998.," International Journal of Refrigeration, vol. 27, p. 587–594, 2004.

S. Wongwises and S. Disawas, "Performance of the two-phase ejector expansion refrigeration cycle," International Journal of Heat and Mass Transfer, vol. 48, pp. 4282-4286, 2005.

P. Chaiwongsa and S. Wongwises, "Effect of throat diameters of the ejector on the performance of the refrigeration cycle using a two-phase ejector as an expansion device," International Journal of Refrigeration, vol. 30, pp. 601-608, 2007.

P. Chaiwongsa and S. Wongwises, "Experimental study on R-134a refrigeration system using a two-phase ejector as an expansion device," Applied Thermal Engineering, vol. 28, pp. 467-477, 2008.

A. Khalil, M. Fatouh and E. Elgendy, "Ejector design and theoretical study of R134a ejector refrigeration cycle," International Journal of Refrigeration, vol. 34, pp. 1684-1698, 2011.

C. Seckin, "Effect Of The Primary Nozzle Throat Diameter on The Cooling Performance of An Ejector Expansion Refrigeration Cycle with A Two Phase Ejector Under Critical Conditions," in Proc. of Istanbul International Conference On Progress In Applied Science, Istanbul, Turkey, 2017.

B. Tashtoush, A. Alshare and S. Al-Rifai, "Performance study of ejector cooling cycle at critical mode under superheated primary flow," Energy Convers. Manage., vol. 94, p. 300–310, 2015.

H. K. Ersoy and N. B. Sag, "Preliminary experimental results on the R134a refrigeration system using a two-phase ejector as an expander," International Journal of Refrigeration, vol. 43, pp. 97- 110, 2014.

N. B. Sag, H. K. Ersoy, A. Hepbasli and H. S. Halkaci, "Energetic and exergetic comparison of basic and ejector expander refrigeration systems operating under the same external conditions and cooling capacities," Energy Convers. Manage., vol. 90, p. 184–194, 2015.

R. Yapici, H. K. Ersoy, A. Aktoprakoglu, H. S. Halkaci and O. Yigit, "Experimental determination of the optimum performance of ejector refrigeration system depending on Ejector Area Ratio," International Journal of Refrigeration, vol. 31, p. 1183–1189, 2008.

E. D. Rogdakis and G. K. Alexis, "Investigation of ejector design at optimum operating condition," Energy Conver Mngmnt, vol. 41, p. 1841–1849, 2000.

M. Sokolov and D. Hershgal, "Enhanced ejector refrigeration cycles powered by low grade heat. Part 2. Design procedures," International Journal of Refrigeration, vol. 13, p. 357–363, 1990.

H. K. Abdel-Aal, A. S. Al-Zakri, M. ElSarha and M. E. El-Swify, "Other options of mass and energy input for steam jet refrigeration systems," ChemEngng J, vol. 45, p. 99–110, 1990.

A. Selvaraju and A. Mani, "Analysis of an ejector with environment friendly refrigerants," Appl. Therm. Eng., vol. 24, pp. 827-838, 2004.

J. Chen, H. Havtun and B. Palm, "Parametric analysis of ejector working characteristics in the refrigeration system," Appl. Therm. Eng., vol. 69, pp. 130-142, 2014.

K. Sumeru, H. Nasution and F. N. Ani, "A review on two-phase ejector as an expansion device in vapor compression refrigeration cycle," Renewable and Sustainable Energy Reviews, vol. 16, p. 4927–4937, 2012.

K. Chunnanond and S. Aphornratana, "Ejectors: applications in refrigeration technology," Renewable and Sustainable Energy Reviews, vol. 8, p. 129–155, 2004.

M. Ouzzane and Z. Aidoun, "Model development and numerical procedure for detailed ejector analysis and design," Appl. Therm. Eng., vol. 23, p. 2337–2351, 2003.

F. Liu and E. A. Groll, "Analysis of a Two Phase Flow Ejector For Transcritical CO2 Cycle," in Proc. of International Refrigeration and Air Conditioning Conference, Purdue, USA, 2008.

R. E. Henry and H. K. Fauske, "The twophase critical flow of one component mixtures in nozzles, orifices, and short tubes," Journal of Heat Transfer, vol. 93, pp. 179-187, 1971.

K. H. Ersoy, "Theoretical Investigation of Performance Characteristics of Ejector Refrigeration Systems (in Turkish)," Konya, Turkey, 1999.

Y. A. Cengel and M. A. Boles, Thermodynamics: An engineering approach, Boston: McGraw-Hill, 2001.

M. Hassanain, E. Elgendy and M. Fatouh, "Ejector expansion refrigeration system: Ejector design and performance evaluation," International Journal Journal of Refrigeration, vol. 58, pp. 1-13, 2015.

S. Elbel, "Experimental And Analytical Investigation of A Two-Phase Ejector Used For Expansion Work Recovery In A Transcritical R744 Air-Conditioning System," Urbana, USA, 2007.

K. Ameur, Z. Aidoun and M. Ouzzane, "Expansion of subcooled refrigerant in twophase ejectors with no flux induction," Experimental Thermal and Fluid Science, vol. 82, p. 424–432, 2017.

M. E. Ahammed, S. Bhattacharyya and M. Ramgopal, "Thermodynamic design and simulation of a CO2 based transcritical vapour compression refrigeration system with an ejector," International Journal of Refrigeration, vol. 45, pp. 177-188, 2014.

R. F. Tangren, C. H. Dodge and H. S. Seifert, "Compressibility Effects in Two-Phase Flow," Journal of Applied Physics, vol. 20, p. 637–645, 1949.

O. Brunin, M. Feidt and B. Hivet, "Comparison of the working domains of some compression heat pumps and a compression–absorption heat pump," International Journal Journal of Refrigeration, vol. 20, p. 308–318, 1997.
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi-Cover
  • ISSN: 1301-4048
  • Yayın Aralığı: Yılda 6 Sayı
  • Başlangıç: 1997
  • Yayıncı: Sakarya Üniversitesi Fen Bilimleri Enstitüsü