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Performance Investigation of Two Two-Stage Trans-Critical Carbon Dioxide Refrigeration Cycles Ejector and Internal Heat Exchanger | ||
| Journal of Heat and Mass Transfer Research | ||
| مقاله 47، دوره 6، شماره 2 - شماره پیاپی 12، بهمن 2019، صفحه 75-84 اصل مقاله (1.22 M) | ||
| نوع مقاله: Full Length Research Article | ||
| شناسه دیجیتال (DOI): 10.22075/jhmtr.2018.1707.1152 | ||
| نویسندگان | ||
| AhmadReza Rahmati* 1؛ A. Gheibi2 | ||
| 1university of Kashan | ||
| 2university of kashan | ||
| تاریخ دریافت: 26 فروردین 1396، تاریخ بازنگری: 27 بهمن 1396، تاریخ پذیرش: 04 اسفند 1396 | ||
| چکیده | ||
| In the present work, the performances of improved two-stage multi inter-cooler trans- critical carbon dioxide (CO2) refrigeration cycles with ejector and internal heat exchanger have been examined. In the new improved cycles, an internal heat exchanger is append to the cycles. Also, second inter-cooler in improved cycles, cooled with the refrigeration of the cycle, so that in first cycle it is a branch of saturated vapour flow from separator and in second cycle it is a branch of supersaturated steam from internal heat exchanger as well. Results are validated against those available in the literature. Comparisons of the results indicate that there is an excellent agreement between them. The influences of important operational parameters in the cycle performance such as pressure of gas-cooler, temperature of evaporator and temperature of gas-cooler on the performance of cycle have been analysed. The obtained results present that if the cooling flow for second inter-cooler supply from saturated vapour from separator, maximum coefficient of performance can be improved 25% in comparison with the conventional cycle at the considered specific states for operation. | ||
| کلیدواژهها | ||
| Trans-critical؛ Refrigeration؛ Carbon dioxide؛ Multi inter-cooler؛ Internal heat exchanger | ||
| عنوان مقاله [English] | ||
| بررسی عملکرد دو سیکل تبرید گذربحرانی کربن دی اکسید دومرحله ای اصلاح شده با اجکتور و مبدل حرارتی میانی | ||
| کلیدواژهها [English] | ||
| کلمات کلیدی: گذر بحرانی, تبرید, کربن دی اکسید, خنک کن میانی, مبدل حرارتی میانی | ||
| مراجع | ||
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References
[1] Li. Peihua, J. J. J. Chen, S. Norris, “Review of flow condensation of CO2 as a refrigerant,” International Journal of Refrigeration, 72(2), (2016) pp 53-73.
[2] H. yuhala, J. Wang, et al., Denso Corporation in japan, Private Communication, Tsinghua in Beijing, China, (2004).
[3] A.A. Kornhauser, The use of an ejector as a refrigerant expander, Proceedings of the 1990 USNC/IIR-Purdue Refrigeration Conference, 10–19 (1990).
[4] P.A. Domanski, “Theoretical evaluation of vapor compression cycle with a liquid-line/suction-line heat exchanger, economizer, and ejector,” Nistir-5606, National Institute of Standards and Technology, March (1995).
[5] B. Tao, Y. Jianlin, Y. Gang, “Advanced exergy analyses of an ejector expansion trans-critical CO2 refrigeration system,” 126, (2016) pp.850-861.
[6] S. Disawas, S. Wongwises, “Experimental investigation on the performance of the refrigeration cycle using a two-phase ejector as an expansion device,” International Journal of Refrigeration 27, (2004) pp. 587–594.
[7] J.-q. Deng, P.-x. Jiang, T. Lu, W. Lu, “Particular characteristics of trans-critical CO2 refrigeration cycle with an ejector,” Applied Thermal Engineering 27, (2007) pp.381–388.
[8] M. Yari, “Performance analysis and optimization of a new two-stage ejector expansion trans-critical CO2 refrigeration cycle,” Int. J. Therm. Sci. 48, (2009) pp. 1997-2005.
[9] F. Eskandari Manjili, M.A. Yavari, “Performance of a new two-stage multi-intercooling trans-critical CO2 ejector refrigeration cycle,” International Journal of Applied Thermal Engineering, 40(4), (2012) pp. 202–209.
[10] Y. Huai, X. Guo, Y. Shi, “Experimental Study on Performance of Double-Throttling Device Trans critical CO2 Ejector Refrigeration System,” The 8th International Conference on Applied Energy – ICAE2016, (2017), pp. 5106-5113.
[11] E. Y. Abdellaoui, L. K. Kairouani, “Thermodynamic analysis of a new dual evaporator CO2 trans critical refrigeration cycle”, International Journal of Committee on Thermodynamics and Combustion of Polish Academy of Sciences 38, (2017) pp38-48.
[12] T. Bai, G. Yan, J. Yu, “Thermodynamics analysis of a modified dual-evaporator CO2 trans critical refrigeration cycle with two-stage ejector”, International Journal of Energy84, (2015) pp.325-335.
[13] S.M. Liao, T.S. Zhao, A. Jakobsen, “Correlation of optimal heat rejection pressures in trans-critical carbon dioxide cycles,” International Journal of Applied Thermal Engineering, 20 (9), (2000) pp. 831–841.
[14] M. Yari, M. Sirousazar, “Cycle improvements to ejector-expansion trans-critical CO2 two-stage refrigeration cycle”, International Journal of Energy Research, (2009). (DOI: 10.1002/er.1385).
[15] M. Goodarzi, A. Gheibi, “Performance analysis of a modified trans-critical CO2 refrigeration cycle,” Applied Thermal Engineering, 72(22), (2015)pp. 1118–1125.
[16] Y.A. Cengel, M.A. Boiles, Thermodynamics: An Engineering Approach, sixth ed. Mc Graw-Hill, Inc., (2007).
[17] A. Bejan, G. Tsats aronis, M. Moran, Thermal Design and Optimization, John Wiley and Sons, Inc., New York, NY, (1996).
[18] L. T. Chen, “A new ejector–absorber cycle to improve the COP of an absorption refrigeration system”. International Journal of Applied Energy 30, (1988) pp. 37–51. | ||
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