Numerical analysis of transcritical carbon dioxide compression cycle: a case study

  • Authors

    • Mohammad Mehdi keshtkar Head of Mechanical Engineering in IAUK
    2018-02-13
    https://doi.org/10.14419/jacst.v7i1.8827
  • Thermodynamic Analysis, Transcritical, Carbon Dioxide, Two-Stage Compression, Intercooler, Gas Cooler.
  • Abstract

    This study deals with thermodynamic investigation of a refrigeration compression cycle with carbon dioxide refrigerant and two stage compression. In this paper, the effect of intercooler in the two-stage compression system at different pressures of gas cooler is investigated. In addition, the performance of one stage compression cycle and two-stage compression cycle are compared and eventually, the performance of system is investigated under the influence of the change of variables such as gas cooler  pressure, isentropic efficiency of the compressors, the intercooling rate between the two stages of compression, the refrigerant gas cooler outlet temperature is examined. Due to evaporation temperature in the evaporator  and refrigeration capacity (kW) results show that the coefficient of performance in the two-stage compression with intercooler is increased compared to the single-stage compression cycle.

  • References

    1. [1] N. Agrawal, S. Bhattacharyya, Exergy assessment of an optimized capillary tube-based transcritical CO2 heat pump system. Int.Journal of Energy Research, 5 (2009) 1536-1543.

      [2] L. Cecchinato, M. Chiarello, M. Corradi, E. Fornasieri, S. Minetto, P. Stringari, Thermodynamic analysis of different two-stage transcritical carbon dioxide cycles. Int. Journal of Refrigeration, 32 (2009)1058-1067. https://doi.org/10.1016/j.ijrefrig.2008.10.001.

      [3] M.H. Kim, J. Pettersen, C.W. Bullard, Fundamental Process and System Design Issues in CO2 Vapor Compression Systems, Progress in Energy and Combustion 30 (2004) 119-174. https://doi.org/10.1016/j.pecs.2003.09.002.

      [4] A. Arora, N.K. Singh, S. Monga, O. Kumar, Energy and exergy analysis of a combined transcritical CO2 compression refrigeration and single effect H2O-LiBr vapour absorption system. Int. Journal Exergy, 9 (4) (2011) 42-49. https://doi.org/10.1504/IJEX.2011.043916.

      [5] M.M. Keshtkar, Effect of subcooling and superheating on performance of a cascade refrigeration system with considering thermo-economic analysis and multi-objective optimization, Journal of Advanced Computer Science & Technology, 5 (2) (2016) 42-47. https://doi.org/10.14419/jacst.v5i2.6217.

      [6] M.M. Keshtkar, P. Talebizadeh, Multi-objective optimization of cooling water package based on 3Eanalysis: A case study, Journal of Energy, 134 (2017) 840-849. https://doi.org/10.1016/j.energy.2017.06.085.

      [7] M.M. Keshtkar, Performance analysis of a counter flow wet cooling tower and selection of optimum operative condition by MCDM-TOPSIS method, Applied Thermal Engineering, 114 (2017) 776–784. https://doi.org/10.1016/j.applthermaleng.2016.12.043.

      [8] M.M. Keshtkar, P. Talebizadeh, Multi-Objective Optimization of a R744/R134a Cascade Refrigeration System: Exergetic, Economic, Environmental, and Sensitive Analysis (3ES), Journal of Thermal Engineering, 5 (2017) 1840-1849.

      [9] S.A. Klein, F.L. Alvarado, EES - Engineering Equation Solver, F-Chart Software, Middleton, 1995.

      [10] Lorentzen, G. The use of natural refrigerants: a complete solution to the CFC/HCFC predicament. Int. Journal of Refrigeration, 18 (1995) 190-197. https://doi.org/10.1016/0140-7007(94)00001-E.

      [11] K.B. Madsen, C.S. Poulsen, M. Wiesenfarth, Study of capillary tubes in a transcritical CO2 refrigeration system. Int. Journal of Refrigeration, 28 (2005) 1212-1218. https://doi.org/10.1016/j.ijrefrig.2005.09.009.

      [12] A.B. Pearson, Optimizing CO2 Systems. Proceedings of the 7th IIR Gustav Lorentzen Conference on Natural Working Fluids, Trondheim, Norway, 2006.

      [13] C. Rohrer, Transcritical CO2 Bottle Cooler Development, Proceedings of the 7th IIR Gustav Lorentzen Conference on Natural Working Fluids, Trondheim, Norway, 2006.

      [14] J.L.Yang, Y.T. Ma, S.C. Liu, Performance investigation of transcritical carbon dioxide two-stage compression cycle with expander. Energy, 32 (2007) 237–245. https://doi.org/10.1016/j.energy.2006.03.031.

      [15] A.E. Özgur, The performance analysis of a two-stage transcritical CO2 cooling cycle with various gas cooler pressures, Int. Journal of Energy Research, 32 (2008) 1309–1315. https://doi.org/10.1002/er.1425.

      [16] Y. Chen, J. Gu, The optimum high pressure for CO2 transcritical refrigeration systems with internal heat exchangers. Int. Journal of Refrigeration, 28 (2005) 1238–1249. https://doi.org/10.1016/j.ijrefrig.2005.08.009.

      [17] N. Agrawal, S. Bhattacharyya, J. Sarkar, Optimization of two-stage transcritical carbon dioxide heat pump cycles. Int. Journal of Thermal Sciences, 46 (2007) 180–187. https://doi.org/10.1016/j.ijthermalsci.2006.04.011.

      [18] M. Fatouh, M.E. Kafafy, Assessment of propane/commercial butane mixtures as possible alternatives to R134a in domestic refrigerators, Energy Conversion and Management, 47 (2006) 2644-2658. https://doi.org/10.1016/j.enconman.2005.10.018.

      [19] W.F. Stoecker, J.M.S. Jabardo, Refrigeration, 2th Edition, Edgard Blucher, Sao Paulo, 2002.

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  • How to Cite

    keshtkar, M. M. (2018). Numerical analysis of transcritical carbon dioxide compression cycle: a case study. Journal of Advanced Computer Science & Technology (JACST), 7(1), 1-6. https://doi.org/10.14419/jacst.v7i1.8827

    Received date: 2017-12-10

    Accepted date: 2018-01-08

    Published date: 2018-02-13