Analysis of the effect of thermohydraulic irreversibility of processes in the cycle of a refrigeration machine with a non-azeotropic mixture of refrigerants
DOI:
https://doi.org/10.15587/2312-8372.2019.179131Keywords:
exergy analysis, non-azeotropic mixture, non-isothermal phase transition, hydraulic refrigerant circuitAbstract
The object of research is the effect of thermohydraulic irreversibility of energy processes in the cycle of a refrigeration machine using an ozone-safe non-azeotropic mixture as a refrigerant on its energy efficiency. One of the most problematic places during the development and design of such refrigeration machines is that, due to the peculiarities of the thermodynamic properties associated with the different chemical composition of the components, non-azeotropic mixtures are characterized by differences in the equilibrium concentrations of the components in the liquid and vapor phases. This property of non-azeotropic mixtures presents a certain difficulty for their effective application in refrigeration machines and heat pumps. During the study, modern methods of analysis and synthesis of thermodynamic systems are used, based on the application of the theoretical apparatus of technical thermodynamics, thermoeconomics, the theory of heat and mass transfer, as well as elements of the theory of systems engineering. The issue of assessing the energy efficiency of the cycles of refrigeration units operating on a non-azeotropic mixture of refrigerants is considered, taking into account the variability of the composition of the components of the mixture. A method has been developed for the formation of the composition of a multicomponent mixture, taking into account the influence of the non-isobarity of processes in the hydraulic circuit of the refrigerant circulation on the energy efficiency of the refrigeration machine. Based on a numerical experiment, the influence of changes in the concentrations of the components of the mixture R32, R125, R134a on the non-isothermal phase transition in the evaporator and condenser, as well as on pressure losses in the hydraulic circuit elements of an autonomous air conditioner, is established. The effect of friction at a temperature level below ambient temperature on the exergy efficiency of the refrigeration machine is analyzed. An advanced exergy analysis of the refrigeration cycle with a non-azeotropic mixture is carried out, as a result of which the avoidable and unavoidable, as well as the endogenous and exogenous components of the destruction of exergy in the elements are determined. The proposed method, due to its visibility, can significantly simplify the finding of the thermodynamic parameters of the refrigerant at the nodal points of the refrigeration machine cycle during numerical simulation.
References
- Cvetkov, O. B., Laptev, Iu. A. (2002). Teplofizicheskie aspekty ekologicheskikh problem sovremennoi kholodilnoi tekhniki. Khimiia i kompiuternoe modelirovanie. Butlerovskie soobscheniia, 10, 74–78.
- Babakin, B. S., Stefanchuk, V. I., Kovtunov, E. E. (2000). Alternativnye khladagenty i servis kholodilnykh sistem na ikh osnove. Moscow: Kolos, 160.
- Zheleznyi, V. P., Khliieva, O. Ya., Bykovets, N. P. (2004). Robochi tila kholodylnykh ustanovok. Kholod, 3, 22−25.
- Volodin, V. I., Zditoveckaia, S. V. (2005). Vliianie gidrodinamiki trakta obviazki teplovogo nasosa na ego teplovuiu effektivnost. Trudy BGTU. Ser. ІІІ. Khimiia i tekhnologiia neorganicheskikh veschestv, XIII, 166–169.
- Maake, W., Eckert, H.-Y., Cauchepin, J.-L. (1993). LE POHLMANN – Manuel technique du froid. Tome 1. Paris: Pyc Livres, 1174.
- Nimich, G. V., Mikhailov, V. A., Bondar, E. S. (2003). Sovremennye sistemy ventiliacii i kondicionirovaniia vozdukha. Kyiv: Avanpost Prim, 626.
- Mezenceva, N. N. (2011). Effektivnost raboty parokompressionnykh teplovykh nasosov na neazeotropnykh smesevykh khladagentakh. Teplofizika i aeromekhanika, 18 (2), 335–342.
- Kim, M., Kim, M. S., Kim, Y. (2004). Experimental study on the performance of a heat pump system with refrigerant mixtures composition change. Energy, 29, 1053–1068. doi: http://doi.org/10.1016/j.energy.2003.12.004
- Shaik, S. V., Babu, T. P. A. (2017). Theoretical Performance Investigation of Vapour Compression Refrigeration System Using HFC and HC Refrigerant Mixtures as Alternatives to Replace R22. Energy Procedia, 109, 235–242. doi: http://doi.org/10.1016/j.egypro.2017.03.053
- Ashok Babu, T. P., Samaje Vikas, V., Rajeev, R. (2006). Development of Zero ODP, Less TEWI, Binary, Ternary and Quaternary Mixtures to Replace HCFC-22 in Window Air-Conditioner. International Refrigeration and Air Conditioning Conference, 854, 1–8.
- Arora, A., Kaushik, S. C. (2008). Theoretical analysis of a vapour compression refrigeration system with R502, R404A and R507A. International Journal of Refrigeration, 31 (6), 998–1005. doi: http://doi.org/10.1016/j.ijrefrig.2007.12.015
- Kaushik, S. C., Bilga, P. S., Arora, A. (2016). Alternatives in Refrigeration and Air Conditioning. New Delhi: I. K. International Publishing House Pvt. Ltd, 420.
- Qureshi, B. A., Zubair, S. M. (2011). Performance degradation of a vapor compression refrigeration system under fouled conditions. International Journal of Refrigeration, 34 (4), 1016–1027. doi: http://doi.org/10.1016/j.ijrefrig.2011.02.012
- Dobrovicescu, A., Tsatsaronis, G., Stancu, D., Apostol, V. (2011). Consideration upon Exergy Destruction and Exergoeconomic Analysis of a Refrigerating System. Revista de Chimie, 62 (12), 1168–1174.
- Tarasova, V. A., Kharlampidi, D. Kh. (2013). The comparative analysis of the thermoeconomic models of cold exegetical cost formation. Industrial Gases, 6, 55–63.
- Morosuk, T., Tsatsaronis, G. (2009). Advanced exergetic evaluation of refrigeration machines using different working fluids. Energy, 34 (12), 2248–2258. doi: http://doi.org/10.1016/j.energy.2009.01.006
- Kelly, S., Tsatsaronis, G., Morosuk, T. (2009). Advanced exergetic analysis: Approaches for splitting the exergy destruction into endogenous and exogenous parts. Energy, 34 (3), 384–391. doi: http://doi.org/10.1016/j.energy.2008.12.007
- Vinarskii, M. S., Lure, M. V. (1975). Planirovanie eksperimenta v tekhnologicheskikh issledovaniiakh. Kyiv: Tekhnіka, 168.
- Lemmon, E. W., McLinden, M. O., Huber, M. L. (2002). NIST Reference Fluid Thermodynamic and Transport Properties – REFPROP Version 7.0. NIST Standard Reference Database 23. Boulder: National Institute of Standards and Technology, 155.
- Kim, Y. J., Park, I. S. (2000). Development of Performance-Analysis Program for Vapor-Compression Cycle based on Thermodynamic Analysis. Journal of Industrial and Engineering Chemistry, 6 (6), 385–394.
- Choi, J. Y., Kedzierski, M. A., Domanski, P. A. (2001). Generalized pressure drop correlation for evaporation and condensation in smooth and micro-fin tubes. Thermophysical Properties and Transfer Processes of New Refrigerants. Paderbom: IIR, 9–16.
- Bratuta, E. G., Kharlampidi, D. Kh., Sherstiuk, V. G. (2006). Vliianie neizobarnosti processov kondensacii i ispareniia na energeticheskie pokazateli kholodilnykh mashin i teplovykh nasosov. Eastern-European Journal of Enterprise Technologies, 3 (3 (21)), 91–93.
- Bratuta, E. G., Sherstiuk, V. G., Kharlampidi, D. Kh. (2007). Analiz vliianiia soprotivleniia soedinitelnykh truboprovodov kholodilnoi mashiny na ee effektivnost. Іntegrovanі tekhnologіi ta energozberezhennia, 1, 16–23.
- Tarrad, A. H., Abbas, A. K. (2010). Evolution of Proper Alternative Refrigerant for R22 in Air Conditioning System. Emirates Journal for engineering Research, 15 (2), 41–51.
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