Ejector Design and Performance Evaluation for Ejector Expansion Refrigeration System
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Abstract
This study aims to design the two-phase flow ejector and to evaluate the Coefficient of Performance of ejector expansion refrigeration system. A mathematical model is developed to analyze the relationships among the operating conditions with the ejector sizes and the system COP, respectively. In this study, the refrigeration system having 3.5 kW of capacity is operated with condenser and evaporator temperature ranging from 35–55°C and 0–15°C, respectively and R32 is used as the working fluid. From the results, it was that varying the operating conditions strongly affects the required ejector sizes and the system COP. In addition, the relationships obtained from this study can be used as a guideline to design the ejector expansion refrigeration system.
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References
[2] H. Nasution and W. N. M. Hasan, “Potential electricity savings by variable speed control of compressor for air conditioning systems,” Clean Technologies and Environmental Policy, vol. 8, no. 2, pp. 105–1011, 2006.
[3] C. Aprea, R. Mastrullo, and C. Renno, “Experimental analysis of the scroll compressor performances varying its speed,” Applied Thermal Engineering, vol. 26, no.10, pp. 983–992, 2006.
[4] T. Q. Qureshi and S. A. Tassau, “Variable- speed capacity control in refrigeration system,” Applied Thermal Engineering, vol. 16, no.2, pp. 103–113, 1996.
[5] A. A. Kornhauser, “The use of an ejector as a refrigerant expander,” in Proceedings of the USN/IIR-Purdue refrigeration conference, USA, pp. 10–19, 1990.
[6] E. Nehdi, L. Kairouani, and M. Bouzaina, “Performance analysis of the vapor compression cycle using ejector as an expander,” International Journal Energy Research, vol. 31, no. 4, pp. 364–75, 2007.
[7] N. Billir and H. K. Ersoy, “Performance improvement of the vapour compression refrigeration cycle by a two-phase constant area ejector,” International Journal of Energy Research, vol. 33, no.5, pp. 469–480, 2009.
[8] 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.
[9] M. Hassanain, E. Elgendy, and M. Fatouh, “Ejector expansion refrigeration system: Ejector design and performance evaluation,” International Journal of Refrigeration, vol. 58, pp. 1–13, 2015.
[10] N. B. Sag and H. K. Ersoy, “Experimental investigation on motive nozzle throat diameter for an ejector expansion refrigeration system,” Energy Conversation and Management, vol. 124, pp. 1–12, 2016.
[11] Y. Li and J. Yu, “The effects of ejector geometry parameter and refrigerant charge amount on an ejector-expansion refrigeration system,” Applied Thermal Engineering, vol. 152, pp. 402–408, 2019.
[12] P. Chaiwongsa, “Effect of geometric parameters of ejector on the performance of refrigeration cycle using ejector as an expansion device,” M.S. thesis, Department of Mechanical Engineering, Faculty of Engineering King Mongkut’s University of Technology Thonburi, Bangkok, Thailand, 2005 (in Thai).
[13] 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 of Refrigeration, vol. 20, no. 5, pp. 308–318, 1997.
[14] R. Yapici and H. K. Ersoy, “Performance characteristics of the ejector refrigeration system based on the constant area ejector flow model,” Energy Conversion and Management, vol. 46, pp. 3117–3135, 2005.
[15] C. lin, C. Xu, B. Yue, C. Jiang, H. Omori, and J. Deng, “Experimental study on the separator in ejectorexpansion refrigeration system,” International Journal of Refrigeration, vol. 100, pp. 307–314, 2019.