CFD simulation and exergy evaluation of geometrical characteristics effects of refrigeration tubes in a 3-fluid LAMEE

Zabihi, Aydin; Pourmahmoud, Nader

doi:10.22061/jcarme.2024.10051.2341

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	CFD simulation and exergy evaluation of geometrical characteristics effects of refrigeration tubes in a 3-fluid LAMEE
Journal of Computational & Applied Research in Mechanical Engineering (JCARME)
مقاله 8، دوره 14، شماره 1 - شماره پیاپی 27، مهر 2024، صفحه 111-128 اصل مقاله (1.26 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22061/jcarme.2024.10051.2341
نویسندگان
Aydin Zabihi؛ Nader Pourmahmoud^*
Mechanical Engineering Department, Urmia University, Urmia, Iran
تاریخ دریافت: 28 تیر 1402، تاریخ بازنگری: 08 اسفند 1402، تاریخ پذیرش: 14 اسفند 1402
چکیده
Cooling tubes are inserted into the desiccant dehumidifier liquid of a 3-fluid liquid-to-air membrane energy exchanger (LAMEE) to regulate the temperature of the dehumidifier liquid. As a result, the 3-fluid LAMEE's performance is significantly influenced by the refrigerated tubes. The numerical analysis of the present work shows that the number of chilled tubes and their inner diameter affect the effectiveness (total, latent, and sensible) rate of moisture removal, adequate cooling power, and exergy loss. Additionally, the dehumidifier liquid channel receives the addition of wavy cooling tubes for the first time. The relationship between wave height and wave length is known as wave steepness and its impact on efficiency and energy loss is also examined. Numerical studies show that the number and inner diameter of the cooling tubes have a direct correlation with the efficiency of the 3-fluid LAMEE. The improved the efficiency, the more cooled tubes there are and the larger their diameter. Furthermore, both exergy loss and without dimensions exergy loss increase with the quantity and diameter of refrigerated tubes. The sensible and latent effectiveness of the 3-fluid LAMEE is increased by the wavy refrigeration tubes as compared to straight tubes; the augmentation of the sensible and latent effectiveness increases with wave steepness.
کلیدواژه‌ها
3-fluid LAMEE؛ Refrigeration tubes؛ CFD؛ Exergy loss؛ Effectiveness

مراجع
[1] M.R. Abdel-Salam, R.W. Besant, C.J. Simonson, “Design and testing of a novel 3-fluid liquid-to-air membrane energy exchanger (3-fluid LAMEE) ”, Int. J. Heat Mass Transf., Vol.92, No.pp.312-329,(2016). [2] A. Kabeel, “Dehumidification and humidification process of desiccant solution by air injection”, Energy., Vol. 35, No. 12, pp. 5192-5201, (2010). [3] C. Liang, L. Zhang, L. Pei, “Performance analysis of a direct expansion air dehumidi fi cation system combined with membrane-based total heat recovery”, Energy., Vol. 35, No. 9, pp. 3891-3901, (2010). [4] D. Storle, M.R. Abdel-Salam, C.J. Simonson, “Energy performance comparison of a 3-fluid and 2-fluid liquid desiccant membrane air-conditioning systems in an office building”, Energy., Vol. 176, No. pp. 437-456, (2019). [5] S-M. Huang, M. Yang, B. Hu, S. Tao, F.G Qin, W. Weng, et al, “Performance analysis of an internally-cooled plate membrane liquid desiccant dehumidifier (IMLDD): An analytical solution approach”, Int. J. Heat Mass Transf., Vol. 119, No. pp. 577-585, (2018). [6] Z. Yang, R. Tao, H. Ni, K. Zhong, Z. Lian, “Performance study of the internally-cooled ultrasonic atomization liquid desiccant dehumidification system”, Energy., Vol. 175, No. pp. 745-757,(2019). [7] M.R. Abdel-Salam, R.W. Besant, C.J. Simonson, “Sensitivity of the performance of a flat-plate liquid-to-air membrane energy exchanger (LAMEE) to the air and solution channel widths and flow maldistribution”, Int. J. Heat Mass Transf., Vol. 84, No. pp. 1082-1100, (2015). [8] M. Seyed-Ahmadi, B. Erb, C.J. Simonson, R.W. Besant, “Transient behavior of run-around heat and moisture exchanger system. Part I: Model formulation and verification”, Int. J. Heat Mass Transf., Vol. 52, No. 15-16, pp. 6000-6011, (2009). [9] A. Vali, C.J. Simonson, R.W. Besant, G. Mahmood, “Numerical model and effectiveness correlations for a run-around heat recovery system with combined counter and cross flow exchangers”, Int. J. Heat Mass Transf., Vol. 52, No. 25-26, pp. 5827-5840, (2009). [10] S-M . Huang, L-Z. Zhang, K. Tang, L-X. Pei, “Fluid flow and heat mass transfer in membrane parallel-plates channels used for liquid desiccant air dehumidification”, Int. J. Heat Mass Transf., Vol. 55, No. 9-10, pp. 2571-2580, (2012). [11] D. Storle, M.R. Abdel-salam, N. Pourmahmoud, C.J. Simonson, “Performance Of The Dehumidification Cycle Of A 3-Fluid Liquid Desiccant Membrane Air-Conditioning System MSc”. Proc. of Building Simulation 15^th Conference of IBPSA, “International building Performance Simulation Association” San Francisco, CA, USA, pp. 2533–2539, (2017). [12] M. Rashidzadeh, N. Pourmahmoud, and C.J. Simonson,“ 3D computational fluid dynamics simulation of a 3-fluid liquid-to-air membrane energy exchanger (LAMEE)”, Appl. Therm. Eng., Vol. 153, No. pp. 501-512, (2019). [13] A.E. Kabeel, Mofreh H. Hamed, Z.M. Omara, S.W. Sharshir, “Experimental study of a humidification-dehumidification solar technique by natural and forced air circulation”, Energy., Vol. 68, No. pp. 218-228, (2014). [14] L-Z. Zhang, “Heat and mass transfer in a cross-flow membrane-based enthalpy exchanger under naturally formed boundary conditions”, Int. J. Heat Mass Transf., Vol. 50, No. 1-2, pp. 151-162, (2007). [15] H. Jafarian, H. Sayyaadi, F. Torabi, “Numerical modeling and comparative study of different membrane-based liquid desiccant dehumidifiers”, Energy Convers. Manag., Vol. 184, No. pp. 735-747, (2019). [16] J. Lin, S-M. Huang, R. Wang, K.J. Chua, “Thermodynamic analysis of a hybrid membrane liquid desiccant dehumidification and dew point evaporative cooling system”, Energy Convers. Manag., Vol. 156, No. pp. 440-458, (2018). [17] M.R. Conde, “Properties of aqueous solutions of lithium and calcium chlorides: formulations for use in air conditioning equipment design”, Int. J. Heat Mass Transf., Vol. 43, No. 4, pp. 367-382, (2004). [18] C. Simonson and R. Besant, “Energy wheel effectiveness: part I—development of dimensionless groups”, Int. J. Heat Mass Transf., Vol. 42, No. 12, pp. 2161-2170, (1999). [19] M.R. Abdel-Salam, R.W. Besant, C.J. Simonson, “Performance Definitions for Three-Fluid Heat and Moisture Exchangers”, J Heat Transfer., Vol. 139, No. 2, pp. 022003-1-022003-8, (2017). [20] S.M. Ghiaasiaan, Convective heat and mass transfer, 2^nd ed., Cambridge University Press; (2018). [21] H.B. Hemingson, C.J. Simonson, R.W. Besant, “Steady-state performance of a run-around membrane energy exchanger (RAMEE) for a range of outdoor air conditions”, Int. J. Heat Mass Transf., Vol. 54, No. 9-10, pp. 1814-1824, (2011). [22] A. Vali, Modeling a run-around heat and moisture exchanger using two counter/cross flow exchangers, PhD thesis, (2009). [23] M. Seyed Ahmadi, Modeling the transient behavior of a run-around heat and moisture exchanger system, PhD thesis, University of Saskatchewan, (2008). [24] H. Sadighi Dizaji, S. Jafarmadar, M. Hashemian, “The effect of flow, thermodynamic and geometrical characteristics on exergy loss in shell and coiled tube heat exchangers”, Energy., Vol. 91, No., pp. 678-684, (2015). [25] E.K. Akpinar, Y. Bicer, “Investigation of heat transfer and exergy loss in a concentric double pipe exchanger equipped with swirl generators”, Int. J. Therm. Sci., Vol. 44, No. 6, pp. 598-607, (2005). [26] E.K. Akpinar, “Evaluation of heat transfer and exergy loss in a concentric double pipe exchanger equipped with helical wires”, Energy Convers. Manag., Vol. 47, No. 18-19, pp. 3473-3486, (2006).
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CFD simulation and exergy evaluation of geometrical characteristics effects of refrigeration tubes in a 3-fluid LAMEE