Theoretical Study of the Load-Speed and Energy Characteristics of the Working Chamber Seals in the Unlubricated Rotary Vane Compressor with a New Tribological Scheme

Abstract

The paper presents results of analyzing the load-speed operating modes and friction power lossesin the working chamber tribo-couplings of the unlubricated rotary vane compressor with a new tribological scheme based on the developed mathematical model. It determines that the total friction power losses in the unlubricated compressor stage with the new tribological scheme are on average 10 times less than losses in a compressor stage of traditional design. The paper shows that the friction energy losses in the rotor slot of the unlubricated compressor stage with the new tribological scheme amount to 30--50 % of the total friction energy losses in the stage; and the friction power losses in the unloading rolling bearings amount to less than 2.5 % of the total friction power losses in the unlubricated compressor stage. Application of the new tribological scheme makes it possible to reduce the reaction forces acting along the plate and on the plate edge in the rotor slot by an average of 15 and 20--30 %. Average sliding speeds in the tribo-couplings of new design are no more than 3 m/s, which allows using the advanced polymer composite materials as the plate sealing materials. Rotor speed frequency, cylinder design parameters and antifriction properties of the sealing plate material have the highest impact on the power and load-speed operation modes of the working chamber friction units

Please cite this article in English as:

Kalashnikov A.M., Raikovskiy N.A., Sadvakasov D.Kh., et al. Theoretical study of the load-speed and energy characteristics of the working chamber seals in the unlubricated rotary vane compressor with a new tribological scheme. Herald of the Bauman Moscow State Technical University, Series Mechanical Engineering, 2025, no. 2 (153), pp. 84--103 (in Russ.). EDN: PECXBK

References

[1] Bianchi G., Rane S., Fatigati F., et al. Numerical CFD simulations and indicated pressure measurements on a sliding vane expander for heat to power conversion applications. Designs, 2019, vol. 3, no. 3, art. 31. DOI: https://doi.org/10.3390/designs3030031

[2] Jeon H.G., Oh S.D., Lee Y.Z. Friction and wear of the lubricated vane and roller materials in a carbon dioxide refrigerant. Wear, 2009, vol. 267, no. 5-8, pp. 1252--1256. DOI: https://doi.org/10.1016/j.wear.2008.12.097

[3] Aradau D., Costiuc L. Friction power in sliding vane type rotary compressors. International Compressor Engineering Conference, 1996, art. 1357, pp. 907--911.

[4] Hu Y., Xu J., Wan P., et al. A study on novel high efficiency vane compressor. International Compressor Engineering Conference, 2018, art. 2601.

[5] Vodicka V., Novotny V., Mascuch J. Wear behaviour of vanes for a rotary vane expander with various graphite materials under dry sliding conditions. Acta Polytech., 2018, vol. 58, no. 5, pp. 315--322. DOI: https://doi.org/10.14311/AP.2018.58.0315

[6] Davim J.P., Cardoso R. Effect of the reinforcement (carbon or glass fibres) on friction and wear behaviour of the PEEK against steel surface at long dry sliding. Wear, 2009, vol. 266, no. 7-8, pp. 795--799. DOI: https://doi.org/10.1016/j.wear.2008.11.003

[7] Elliott D.M., Fisher J., Clark D.T. Effect of counterface surface roughness and its evolution on the wear and friction of PEEK and PEEK-bonded carbon fibre composites on stainless steel. Wear, 1998, vol. 217, no. 2, pp. 288--296. DOI: https://doi.org/10.1016/s0043-1648(98)00148-3

[8] Orosz J., Kemp G., Bradshaw C. Performance and operating characteristics of a novel rotating spool compressor. International Compressor Engineering Conference, 2012, art. 2078.

[9] Bradshaw C., Orosz J., Kemp G., et al. Loss analysis of a rotating spool compressor based on high-speed pressure measurements. International Compressor Engineering Conference, 2014, art. 2271.

[10] Choo W.C., Ooi K.T. Analysis of the novel multi-vane revolving vane compressor --- investigation of vane chattering phenomenon through instantaneous working chamber pressure measurements. Int. J. Refrig., 2022, vol. 134, pp. 207--218. DOI: https://doi.org/10.1016/j.ijrefrig.2021.11.020

[11] Choo W.C., Ooi K.T. Analysis of the novel multi-vane revolving vane compressor --- theoretical modelling and experimental investigations. Int. J. Refrig., 2021, vol. 131, pp. 592--603. DOI: https://doi.org/10.1016/j.ijrefrig.2021.08.004

[12] Wang J., Liu Y., Chen Z., et al. Geometric model and pressurization analysis on a novel sliding vane compressor with an asymmetrical cylinder profile. Int. J. Refrig., 2021, vol. 129, pp. 175--183. DOI: https://doi.org/10.1016/j.ijrefrig.2021.04.032

[13] Sarip A.R., Musa M.N. Theoretical study of a novel multi vane rotary compressor. International Compressor Engineering Conference, 2012, art. 2094.

[14] Drozdov A.A., ed. Kompressornoe oborudovanie i GTU dlya gazotransportnoy sistemy. Sb. tr. konf. [Compressor equipment and GTUs for the gas transportation system. Conf. Proc.]. St. Petersburg, Politekh-Press, 2023. DOI: https://doi.org/10.18720/SPBPU/2/i23-275

[15] Shakya P., Ooi K.T. Introduction to coupled vane compressor: mathematical modelling with validation. Int. J. Refrig., 2020, vol. 117, pp. 23--32. DOI: https://doi.org/10.1016/j.ijrefrig.2020.01.027

[16] Kim R.H., Kim T.O., Chan W.K. Experimental study of an oil-free swing vane compressor. Int. J. Refrig., 2022, vol. 134, pp. 95--104. DOI: https://doi.org/10.1016/j.ijrefrig.2021.11.028

[17] Kuan T.A., Ooi K.T. Leakage study of a lubricant-free revolving vane compressor. Int. J. Refrig., 2021, vol. 124, pp. 122--133. DOI: https://doi.org/10.1016/j.ijrefrig.2020.12.017

[18] Ye F., Bianchi G., Rane S., et al. Analytical grid generation and numerical assessment of tip leakage flows in sliding vane rotary machines. Adv. Eng. Softw., 2021, vol. 159,art. 103030. DOI: https://doi.org/10.1016/j.advengsoft.2021.103030

[19] Wu J., Li J. Effect of part deformation on performance of a rotary compressor using propane under high temperature. Appl. Therm. Eng., 2021, vol. 194, art. 117145. DOI: https://doi.org/10.1016/j.applthermaleng.2021.117145

[20] Raykovskiy N.A., Chernov G.I., Kalashnikov A.M. Mathematical modeling of rotary vane compressors taking into account the mutual influence of tribological and operating parameters. J. Frict. Wear, 2023, vol. 44, no. 2, pp. 108--116. DOI: https://doi.org/10.3103/S1068366623020101

[21] Raykovskiy N.A., Chernov G.I., Evdokimov V.S., et al. Power loss analysis in a new oil-free rotary vane compressor: experimental investigation and mathematical modeling. Int. J. Refrig., 2024, vol. 160, pp. 298--311. DOI: https://doi.org/10.1016/j.ijrefrig.2024.01.027