石磊,赵亚珑,彭斌

• 1:兰州理工大学机电工程学院

摘要(Abstract)：

涡旋膨胀机作为有机朗肯循环（organic Rankine cycle,ORC）核心部件之一，其运行特性直接影响了ORC的性能。首先，建立了涡旋膨胀机的三维瞬态仿真模型，通过数值模拟的方法，系统地分析了不同工况下吸气压力、排气压力、转速和对涡旋膨胀机输出功率和等熵效率的影响；其次，分析了不同工况对涡旋膨胀机瞬态性能的影响，较为全面地分析了其中的机理；最后，通过实验室搭建的ORC低温余热无油发电系统试验台验证了数值模型的准确性，实验结果与数值模拟结果吻合良好，验证了数值模拟方法的可靠性和适用性。研究结果对涡旋膨胀机的设计和优化具有重要的参考价值。

关键词(KeyWords)： 有机朗肯循环;涡旋膨胀机;数值模拟;变工况;实验验证

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（51675254,51966009）;; 国家重点研发计划项目（SQ2020YFF042098）;; 甘肃省科技计划项目（20YF8GA057）;; 甘肃省优秀博士生项目（22JR5RA235）~~

作者(Author): 石磊,赵亚珑,彭斌

DOI: 10.19666/j.rlfd.202306095

参考文献(References)：

• [1] LIU B, LIU S, XUE B, et al. Formalizing an integrated decision-making model for the risk assessment of carbon capture, utilization, and storage projects:From a sustainability perspective[J]. Applied Energy, 2021, 303:117624.
• [2] HUANG M T, ZHAI P M. Achieving paris agreement temperature goals requires carbon neutrality by middle century with far-reaching transitions in the whole society[J]. Advances in Climate Change Research, 2021,12(2):281-286.
• [3] WU Z, CHEN L, FENG H, et al. Constructal thermodynamic optimization for a novel Kalina-organic Rankine combined cycle to utilize waste heat[J]. Energy Reports, 2021, 7:6095-6106.
• [4] SONG P, WEI M, SHI L, et al. A review of scroll expanders for organic Rankine cycle systems[J]. Applied Thermal Engineering, 2015, 75:54-64.
• [5]彭斌,蒋龙.变径基圆渐开线涡旋膨胀机几何及泄漏模型的研究[J].机械设计与制造, 2022(1):66-69.PENG Bin, JIANG Long. Study on the geometry and leakage model of a variable diameter base circle involute vortex expander[J]. Mechanical Design and Manufacture,2022(1):66-69.
• [6] GARG P, KARTHIK G M, KUMAR P, et al. Development of a generic tool to design scroll expanders for ORC applications[J]. Applied Thermal Engineering, 2016, 109:878-888.
• [7] FANTI G R, ROM?O D A, DE ALMEIDA R B, et al.Influence of flank clearance on the performance of a scroll expander prototype[J]. Energy, 2020, 193:116823.
• [8] ALSHAMMARI F, PESYRIDIS A, ELASHMAWY M.Turbine optimization potential to improve automotive Rankine cycle performance[J]. Applied Thermal Engineering, 2021, 186:116559.
• [9] GAO J, MA C, TIAN G, et al. Numerical investigations of an opposed rotary piston expander for the purpose of the applications to a small-scale Rankine cycle[J]. Applied Thermal Engineering, 2021, 182:116157.
• [10] EMHARDT S, SONG P, TIAN G, et al. CFD analysis of variable wall thickness scroll expander integrated into small scale ORC systems[J]. Energy Procedia, 2019, 158:2272-2277.
• [11] EMHARDT S, TIAN G, SONG P, et al. CFD modelling of small scale ORC scroll expanders using variable wall thicknesses[J]. Energy, 2020, 199:117399.
• [12] SINGH S, SINGH A, DASGUPTA M S. CFD modeling of a scroll work recovery expander for trans-critical CO2refrigeration system[J]. Energy Procedia, 2017, 109:146-152.
• [13] SONG P, WEI M, LIU Z, et al. Effects of suction port arrangements on a scroll expander for a small scale ORC system based on CFD approach[J]. Applied Energy, 2015,150:274-285.
• [14] DU Y, TIAN G, PEKRIS M. Unsteady and threedimensional computational fluid dynamics modelling of scroll expander for low-grade waste heat recovery transcritical carbon dioxide micro-scale power system[J].Energy Conversion and Management, 2023, 282:116857.
• [15] FENG Y Q, XU J W, HE Z X, et al. Numerical simulation and optimal design of scroll expander applied in a smallscale organic rankine cycle[J]. Energy, 2022, 260:124981.
• [16] SONG P, WEI M, ZHANG Y, et al. The impact of a bilateral symmetric discharge structure on the performance of a scroll expander for ORC power generation system[J]. Energy, 2018, 158:458-470.
• [17] LIU Z, WEI M, SONG P, et al. The fluid-thermal-solid coupling analysis of a scroll expander used in an ORC waste heat recovery system[J]. Applied Thermal Engineering, 2018, 138:72-82.
• [18] ZHANG H H, ZHANG Y F, FENG Y Q, et al. The parametric analysis on the system behaviors with scroll expanders employed in the ORC system:an experimental comparison[J]. Energy, 2023, 268:126713.
• [19] HSIEH J C, CHEN Y H, HSIEH Y C. Experimental study of an organic Rankine cycle with a variable-rotationalspeed scroll expander at various heat source temperatures[J]. Energy, 2023, 270:126956.
• [20] OH J, JEONG H, KIM J, et al. Numerical and experimental investigation on thermal-hydraulic characteristics of a scroll expander for organic Rankine cycle[J]. Applied Energy, 2020, 278:115672.
• [21] XI H, LI M J, ZHANG H H, et al. Experimental studies of organic Rankine cycle systems using scroll expanders with different suction volumes[J]. Journal of Cleaner Production, 2019, 218:241-249.
• [22] GAO P, JIANG L, WANG L W, et al. Simulation and experiments on an ORC system with different scroll expanders based on energy and exergy analysis[J].Applied Thermal Engineering, 2015, 75:880-888.
• [23] KOSMADAKIS G, MOUSMOULIS G, MANOLAKOS D, et al. Development of open-drive scroll expander for an organic Rankine cycle(ORC)engine and first test results[J]. Energy Procedia, 2017, 129:371-378.
• [24] LU Y, WANG Y, WANG L, et al. Experimental investigation of a scroll expander for power generation part of a resorption cogeneration[J]. Energy Procedia,2015, 75:1027-1032.
• [25] GIUFFRIDA A. A theoretical study on the performance of a scroll expander in an organic Rankine cycle with hydrofluoroolefins(HFOs)in place of R245fa[J]. Energy,2018, 161:1172-1180.