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Recent Patents on Engineering

Author(s): Sun Jian, Peng Bin* and Zhu Bing Guo

DOI: 10.2174/1872212117666221028161158

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Numerical Investigation of the Influence of Different Suction and Discharge Ports on Scroll Expander Performance

Article ID: e281022210457 Pages: 18

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Abstract

Background: With the rapid consumption of non-renewable energy such as coal, oil and natural gas, the growing demand for environmental protection, the re-utilization of low-grade waste heat energy has become an important approach to improve energy utilization efficiency. As a new technology, organic Rankine cycle (ORC) power generation technology can make full use of and convert heat waste.

Objective: Both the suction and discharge pressures of the scroll expander have a certain influence on the output and motion characteristics of the orbiting scroll. By studying the position and arrangement of the suction and discharge ports of the expander, a theoretical basis can be provided for the design of these ports.

Methods: For the scroll expander using working fluid R134a, establishing the geometrical and three-dimensional models of the suction and discharge ports of the scroll expander with different positions and structures, based on the Computational Fluid Dynamics (CFD) method.

Results/Discussion: Through comprehensive comparison, it was found that the structure of the original suction pipe outperformed any of the other structures; the fluid flow in the original discharge pipe was more complicated, and the simplified model of the commonly used scroll mechanical discharge pipe had the optimal performance.

Conclusion: Compared with the original prototype SEI2, the suction port area is increased, and the suction port pulsation intensity coefficient and the suction pressure loss coefficient of the prototype SEI4 are reduced by 34.833% and 5.264% respectively, which can make the suction process of the expander more stable. Since the unilateral discharge ports Outlet3 and Outlet5 are located in the moving and static regions, respectively, there is a difference in the perturbation of the outlet fluid by the movable scroll, so that the gas pulsation intensity at Outlet3 is nearly double that of Outlet5.

Keywords: Organic rankine cycle, low-temperature waste heat utilization, scroll expander, numerical simulation, computational fluid dynamics, suction-discharge structure.

Graphical Abstract

[1]
D. Deshmukh, "A comprehensive review of waste heat recovery from a diesel engine using organic rankine cycle", Energy Rep., vol. 7, pp. 3951-3970, 2021.
[http://dx.doi.org/10.1016/j.egyr.2021.06.081]
[2]
P. Song, M. Wei, L. Shi, S.N. Danish, and C. Ma, "A review of scroll expanders for organic Rankine cycle systems", Appl. Therm. Eng., vol. 75, pp. 54-64, 2015.
[http://dx.doi.org/10.1016/j.applthermaleng.2014.05.094]
[3]
X. Luo, J. Wang, C. Krupke, and H. Xu, "Feasibility study of a scroll expander for recycling low-pressure exhaust gas energy from a vehicle gasoline engine system", Energies, vol. 9, no. 4, p. 231, 2016.
[http://dx.doi.org/10.3390/en9040231]
[4]
J. Rak, S. Pietrowicz, and Z. Gnutek, "3D numerical calculations of tangent leakages in scroll compressor during unsteady process", Prog. Comput. Fluid Dyn., vol. 17, no. 6, pp. 344-351, 2017.
[http://dx.doi.org/10.1504/PCFD.2017.088795]
[5]
B. Peng, L. Vincent, L. Arnaud, H.S. Zhang, and H.F. Gong, "Variable thickness scroll compressor performance analysis—Part I: Geometric and thermodynamic modeling", P. I. Mech. Eng. E-J. Pro., vol. 231, pp. 633-640, 2016.
[6]
B. Peng, L. Vincent, L. Arnaud, H.S. Zhang, and H.F. Gong, "Variable thickness scroll compressor performance analysis—Part II: Dynamic modeling and model validation", P. I. Mech. Eng. E-J. Pro., vol. 231, pp. 641-649, 2016.
[7]
Z. Pengcheng, P. Bin, and Z. Yubo, "Comprehensive analysis of geometric performance of circular involute variable thickness scroll compressor", Jixie Gongcheng Xuebao, vol. 56, no. 23, pp. 118-128, 2020.
[http://dx.doi.org/10.3901/JME.2020.23.118]
[8]
B. Peng, Y.H. Li, and S.X. Zhao, "Performance simulation for scroll expanders", Zhongguo Jixie Gongcheng, vol. 29, pp. 965-970, 2018.
[9]
B. Peng, and Y. Sun, "Investigation of mathematical modeling and experiment for variable thickness scroll compressor", Jixie Gongcheng Xuebao, vol. 51, no. 14, pp. 185-191, 2015.
[http://dx.doi.org/10.3901/JME.2015.14.185]
[10]
J.P. Sung, J.H. Boo, and E.G. Jung, "Transient thermodynamic modeling of a scroll compressor using R22 refrigerant", Energies, vol. 13, no. 15, p. 3911, 2020.
[http://dx.doi.org/10.3390/en13153911]
[11]
E. Oralli, I. Dincer, and C. Zamfirescu, "Modeling and analysis of scroll compressor conversion into an expander for rankine cycles", Int. J. Green Energy, vol. 12, no. 7, pp. 672-684, 2015.
[http://dx.doi.org/10.1080/15435075.2013.829776]
[12]
Z. Ma, H. Bao, and A.P. Roskilly, "Dynamic modelling and experimental validation of scroll expander for small scale power generation system", Appl. Energy, vol. 186, pp. 262-281, 2017.
[http://dx.doi.org/10.1016/j.apenergy.2016.08.025]
[13]
G. Cavazzini, F. Giacomel, G. Ardizzon, N. Casari, E. Fadiga, M. Pinelli, A. Suman, and F. Montomoli, "CFD-based optimization of scroll compressor design and uncertainty quantification of the performance under geometrical variations", Energy, vol. 209, p. 118382, 2020.
[http://dx.doi.org/10.1016/j.energy.2020.118382]
[14]
T. Itoh, M. Fujitani, and K. Takeda, "Investigation of discharge flow pulsation in scroll crompressors", In International Compressor Engineering Conference, Purdue, USA, 1994, p. 1056
[15]
D. Obidowski, M. Stajuda, and K. Sobczak, "Efficient multi-objective CFD-based optimization method for a scroll distributor", Energies, vol. 14, no. 2, p. 377, 2021.
[http://dx.doi.org/10.3390/en14020377]
[16]
N. Casari, E. Fadiga, M. Pinelli, S. Randi, A. Suman, and D. Ziviani, "Investigation of flow characteristics in a single screw expander: A numerical approach", Energy, vol. 213, p. 118730, 2020.
[http://dx.doi.org/10.1016/j.energy.2020.118730]
[17]
J. Wang, Y.X. Song, Y. Jiang, Q. Li, and D.H. Zhang, "Numerical simulations of internal flow fields for scroll compressors based on structured dynamic meshes", J. Eng. Thermophys., vol. 37, pp. 309-313, 2016.
[18]
J. Wang, S.J. Cui, H.Z. Feng, H.X. Li, and R.D. Sha, "Construction and simulation of an asymmetric twin-wrap profile for scroll compressor", J. Eng. Thermophys., vol. 42, pp. 386-392, 2021.
[19]
J. Wang, Y.X. Song, H.B. Zha, and Q. Li, "3D Numerical Simulation and study of discharge process for Scroll Compressor", J. Eng. Thermophys., vol. 37, pp. 766-769, 2016.
[20]
E.L.L. Pereira, and C.J. Deschamps, "A heat transfer correlation for the suction and compression chambers of scroll compressors", Int. J. Refrig., vol. 82, pp. 325-334, 2017.
[http://dx.doi.org/10.1016/j.ijrefrig.2017.05.033]
[21]
Q. Zhang, J. Feng, J. Wen, and X. Peng, "3D transient CFD modelling of a scroll-type hydrogen pump used in FCVs", Int. J. Hydrogen Energy, vol. 43, no. 41, pp. 19231-19241, 2018.
[http://dx.doi.org/10.1016/j.ijhydene.2018.08.158]
[22]
J. Wang, Q. Liu, C. Cao, Z. Wang, Q. Li, and Y. Qu, "Design methodology and geometric modeling of complete meshing profiles for scroll compressors", Int. J. Refrig., vol. 91, pp. 199-210, 2018.
[http://dx.doi.org/10.1016/j.ijrefrig.2018.05.011]
[23]
S. Sun, X. Wang, P. Guo, and Z. Song, "Investigation on the modifications of the suction flow passage in a scroll refrigeration compressor", Appl. Therm. Eng., vol. 170, p. 115031, 2020.
[http://dx.doi.org/10.1016/j.applthermaleng.2020.115031]
[24]
J. Sun, B. Peng, and B.G. Zhu, "The internal thermodynamic characteristics and performance test of the new oil-free scroll compressor", Jilin Daxue Xuebao, vol. 52, pp. 1-11, 2022.
[25]
J. Sun, B. Peng, and B.G. Zhu, "Numerical simulation and experimental study of oil-free double-warp air scroll compressor", J. Shanghai Jiaotong Univ., vol. 56, pp. 611-621, 2022.
[26]
J.C. Chang, C.W. Chang, T.C. Hung, J.R. Lin, and K.C. Huang, "Experimental study and CFD approach for scroll type expander used in low-temperature organic Rankine cycle", Appl. Therm. Eng., vol. 73, no. 2, pp. 1444-1452, 2014.
[http://dx.doi.org/10.1016/j.applthermaleng.2014.08.050]
[27]
S. Emhardt, G. Tian, P. Song, J. Chew, and M. Wei, "CFD analysis of the influence of variable wall thickness on the aerodynamic performance of small scale ORC scroll expanders", Energy, vol. 244, p. 122586, 2022.
[http://dx.doi.org/10.1016/j.energy.2021.122586]
[28]
S. Emhardt, G. Tian, P. Song, J. Chew, and M. Wei, "CFD modelling of small scale ORC scroll expanders using variable wall thicknesses", Energy, vol. 199, p. 117399, 2020.
[http://dx.doi.org/10.1016/j.energy.2020.117399]
[29]
E. Fadiga, N. Casari, A. Suman, and M. Pinelli, "Structured mesh generation and numerical analysis of a scroll expander in an open-source environment", Energies, vol. 13, no. 3, p. 666, 2020.
[http://dx.doi.org/10.3390/en13030666]
[30]
L. Li, L. Tao, Y. Gou, and S. Zhang, "Improvement and experimental study of scroll expander for organic rankine cycle", Energy Eng., vol. 117, no. 4, pp. 225-235, 2020.
[http://dx.doi.org/10.32604/EE.2020.010892]
[31]
A. Sun, J. Wang, G. Chen, J. Wang, S. Miao, D. Wang, Z. Wang, and L. Ma, "Study on effects of inlet resistance on the efficiency of scroll expander in micro-compressed air energy storage system", Energies, vol. 13, no. 18, p. 4617, 2020.
[http://dx.doi.org/10.3390/en13184617]
[32]
M. Wei, P. Song, B. Zhao, L. Shi, Z. Wang, and C. Ma, "Unsteady flow in the suction process of a scroll expander for an ORC waste heat recovery system", Appl. Therm. Eng., vol. 78, pp. 460-470, 2015.
[http://dx.doi.org/10.1016/j.applthermaleng.2015.01.010]
[33]
P. Song, M. Wei, Z. Liu, and B. Zhao, "Effects of suction port arrangements on a scroll expander for a small scale ORC system based on CFD approach", Appl. Energy, vol. 150, pp. 274-285, 2015.
[http://dx.doi.org/10.1016/j.apenergy.2015.04.046]
[34]
F. Fatigati, G. Di Giovine, and R. Cipollone, "Feasibility assessment of a dual intake-port scroll expander operating in an ORC-based power unit", Energies, vol. 15, no. 3, p. 770, 2022.
[http://dx.doi.org/10.3390/en15030770]
[35]
S. Jian, P. Bin, and Z. Bingguo, "Numerical simulation and experimental research of oil-free scroll air compressor based on CFD", Recent Pat. Mech. Eng., vol. 15, no. 3, pp. 328-339, 2022.
[http://dx.doi.org/10.2174/2212797614666210830154422]
[36]
J. Sun, B. Peng, and B. Zhu, "Performance analysis and test research of PEMFC oil-free positive displacement compressor for vehicle", Energies, vol. 14, no. 21, p. 7329, 2021.
[http://dx.doi.org/10.3390/en14217329]
[37]
H.K. Versteeg, and W. Malalasekera, An introduction to computational fluid dynamics: The finite volume method.., Pearson education: London, 2007.
[38]
S. Zheng, M. Wei, C. Hu, P. Song, and R. Tian, "Flow characteristics of tangential leakage in a scroll compressor for automobile heat pump with CO2", Sci. China Technol. Sci., vol. 64, no. 5, pp. 971-983, 2021.
[http://dx.doi.org/10.1007/s11431-020-1765-3]
[39]
S.H. Sun, X.W. Wang, P.C. Guo, K. Wu, and G.B. Liu, "Numerical analysis of the transient leakage flow in axial clearance of a scroll refrigeration compressor", P. I. Mech. Eng. E-J. Pro, vol. 236, pp. 1989-1996, 2019.
[40]
J. Wang, Y. Song, Q. Li, and D. Zhang, "Novel structured dynamic mesh generation for CFD analysis of scroll compressors", Proc. Inst. Mech. Eng., A J. Power Energy, vol. 229, no. 8, pp. 1007-1018, 2015.
[http://dx.doi.org/10.1177/0957650915601927]