Journal of Guangdong University of Technology ›› 2020, Vol. 37 ›› Issue (05): 105-110.doi: 10.12052/gdutxb.190150

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Numerical Simulation and Comparative Study of Liquid-vapor Separation of Organic Working Fluid in Liquid-Separation Headers

Li Yi-fan, Huang Kun-teng, Luo Xiang-long, Yang Zhi, Chen Jian-yong, Liang Ying-zong, Chen Ying   

  1. School of Material and Energy, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2019-12-05 Online:2020-09-17 Published:2020-09-17

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Abstract: In order to obtain the influence of different working fluids on the liquid-vapor separation in the liquid separation header, a numerical simulation was carried out with the same mass flow rate and vapor quality as the comparison benchmark. Based on the VOF(Volume of Fluid) multiphase model, the liquid-vapor separation among six working fluids was simulated. The property variables were density, viscosity and surface tension. The result demonstrated that the liquid-vapor separation state will change under the influence of liquid vapor density ration. In addition, it was found that R134a had the best performance in liquid-vapor separation, while R1234ze(E) could replace R134a well. The optimization direction of other working fluid to improve the performance of liquid-vapor separation was also given.

Key words: liquid-vapor separation, working fluid, liquid-vapor density ratio

CLC Number: 

  • O359.1
[1] ZHANG X, JIA L, PENG Q, et al. Experimental study of condensation heat transfer in a condenser with a liquid-vapor separator [J]. Applied Thermal Engineering, 2019, 152: 196-203
[2] LI J, HRNJAK P. Separation in condensers as a way to improve efficiency [J]. International Journal of Refrigeration, 2017, 79: 1-9
[3] 彭晓峰, 吴迪, 张扬. 高性能冷凝器技术原理与实践[J]. 化工进展, 2007, 26(1): 97-104
PENG X F, WU D, ZHANG Y. Applications and principle of high performance condensers [J]. Chemical Industry and Engineering Progress, 2007, 26(1): 97-104
[4] 彭晓峰, 吴迪, 王珍,等. 一种分段式汽液相变换热器:200820234130.1[P]. 2009-12-16.
[5] CHEN Y, HUA N, WU D. A comparative study of fin-and-tube heat exchangers with and without liquid-vapor separation in air conditioning units [J]. International Journal of Green Energy, 2014, 11(5): 488-499
[6] LUO X L, YI Z T, ZHANG B J, et al. Mathematical modelling and optimization of the liquid separation condenser used in organic Rankine cycle [J]. Applied Energy, 2017, 185: 1309-1323
[7] ZHONG T M, CHEN Y, HUA N, et al. In-tube performance evaluation of an air-cooled condenser with liquid-vapor separator [J]. Applied Energy, 2014, 136: 968-978
[8] 陈雪清, 陈颖, 莫松平. 多孔隔板气液分离联箱的实验研究[J]. 广东工业大学学报, 2014, 31(1): 12-17
CHEN X Q, CHEN Y, MO S P. An experimental study of gas-liquid separation headers with porous baffle [J]. Journal of Guangdong University of Technology, 2014, 31(1): 12-17
[9] TUO H F, HRNJAK P. Enhancement of vapor-liquid separation in vertical impact T-junctions for vapor compression systems with flash gas bypass [J]. International Journal of Refrigeration, 2014, 40: 43-50
[10] LI J, LIU Q, GE Z, et al. Optimized liquid-separated thermodynamic states for working fluids of organic rankine cycles with liquid-separated condensation [J]. Energy, 2017, 141: 652-660
[11] SU W, HWANG Y H, DENG S, et al. Experimental study on phase separation of refrigerant at horizontal T-junction [J]. International Journal of Multiphase Flow, 2018, 105: 217-233
[12] CAO Z, XU J L, SUN D L, et al. Numerical simulation of modulated heat transfer tube in laminar flow regime [J]. International Journal of Thermal Sciences, 2014, 75: 171-183
[13] LU P, ZHAO L, DENG S, et al. Simulation of two-phase refrigerant separation in horizontal T-junction [J]. Applied Thermal Engineering, 2018, 134: 333-340
[14] ZHENG M R, HAN D, HUANG L, et al. Experimental and numerical evaluation of plate type separator used in desalination [J]. Desalination, 2019, 450: 33-45
[15] CHEN J Y, LI Y H, DING R, et al. Comparative performance of air-conditioning systems with different refrigerant circuitries in liquid-separation condenser [J]. International Journal of Refrigeration, 2018, 92: 154-164
[16] ZHI L H, HU P, CHEN L X, et al. Multiple parametric analysis, optimization and efficiency prediction of transcritical organic Rankine cycle using trans-1, 3, 3, 3-tetrafluoropropene (R1234ze(E)) for low grade waste heat recovery [J]. Energy Conversion and Management, 2019, 180: 44-59
[17] YANG J Y, YE Z H, YU B B, et al. Simultaneous experimental comparison of low-GWP refrigerants as drop-in replacements to R245fa for Organic Rankine cycle application: R1234ze(Z), R1233zd(E), and R1336mzz(E) [J]. Energy, 2019, 173: 721-731
[18] EL HAJAL J, THOME J, CAVALLINI A. Condensation in horizontal tubes, part 1: Two-phase flow pattern map [J]. International Journal of Heat and Mass Transfer, 2003, 46(18): 3349-3363
[19] CHEN X Q, CHEN Y, MO S P. Experimental research of cold state operation of a gas-liquid separator with a seepage hole [J]. Journal of Engineering Thermophysics, 2014, 35(2): 333-337
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