无油涡旋膨胀机性能实验研究
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摘要
基于涡旋膨胀机实验台,研究压力、扭矩等因素对膨胀机输出性能的影响。结果显示,增加入口压力,膨胀机转速增加,出口温度降低;增加扭矩导致转速减小和入口压力升高;质量流量随扭矩增加单调递减。转速较低时,膨胀机运行不平稳,导致其机械效率随转速下降更明显。转速为1500～2500 r/min时,其输出功率和机械效率均较高。该膨胀机在入口压力为0.53 MPa,扭矩为6 Nm为9 Nm时,达到最大机械效率为93.6%。
An expander testing rig was established to test the output performance of an oil-free scroll expander under various operation conditions. The results indicated that with the increase of the inlet pressure,the rotation speed increases and the outlet temperature decreases,respectively. Similarly,with the increase of torque,the decline of rotation speed and increase of inlet pressure are observed. Moreover,the air mass flow rate is found negatively correlated with the torque. The operation of the expander is not stable with a relative low rotation speed,and the decline of mechanical efficiency is more obvious. The scroll expander possesses its best performance by rotation speed ranges of1500-2500 r/min. The maximum output power of 1780 W can be reached by 0.53 MPa inlet pressure and 6 Nm torque.The maximum mechanical efficiency of 93.6% can be reached by 0.59 MPa inlet pressure and 9 Nm torque.
An expander testing rig was established to test the output performance of an oil-free scroll expander under various operation conditions. The results indicated that with the increase of the inlet pressure,the rotation speed increases and the outlet temperature decreases,respectively. Similarly,with the increase of torque,the decline of rotation speed and increase of inlet pressure are observed. Moreover,the air mass flow rate is found negatively correlated with the torque. The operation of the expander is not stable with a relative low rotation speed,and the decline of mechanical efficiency is more obvious. The scroll expander possesses its best performance by rotation speed ranges of1500-2500 r/min. The maximum output power of 1780 W can be reached by 0.53 MPa inlet pressure and 6 Nm torque.The maximum mechanical efficiency of 93.6% can be reached by 0.59 MPa inlet pressure and 9 Nm torque.
引文
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[2]魏莉莉,张于峰,穆永超,等.工质性质对有机朗肯循环低温发电系统影响的实验研究[J].太阳能学报,2014,35(12):2514—2518.[2] Wei Lili,Zhang Yufeng,Mu Yongchao,et al. Impact ofworking fluid on low-temperature energy conversionsystem using ORCs[J]. Acta Energiae Solaris Sinica,2014,35(12):2514—2518.
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[6]潘登.有机朗肯循环涡旋膨胀机性能实验研究[D].上海:同济大学,2013.[6] Pan Deng. Experimental research on the performance ofscroll expander used in ORC system[D]. Shanghai:Tongji University,2013.
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[8]潘登,高乃平,谢飞博,等.有机朗肯循环涡旋膨胀机性能试验研究[J].流体机械,2014,42(5):10—14.[8] Pan Deng,Gao Naiping,Xie Feibo,et al. Experimentalresearch on the performance of scroll expander used inorganic Rankine cycle[J]. Fluid Machinery,2014,42(5):10—14.
[9] Muhammad I,Muhammad U,Byung-Sik P,et al.Volumetric expanders for low grade heat and waste heatrecovery applications[J]. Renewable and SustainableEnergy Reviews,2016,57:1090—1109.
[10] Imran M, Usman M, Pard B-S, et al. Study onfundamental performance of scroll expander[J]. TheProceedings of the Japan Society of MechanicalEngineers,1988,54(506):2798—2803.
[11]郑敏之.涡卷式膨胀机的性能试验[J].压缩机技术,1991,3:1—5.[11] Zheng Minzhi. Experiment on the performance of scrollexpander[J]. Compressor Technology,1991,3:1—5.
[12]顾伟,孙绍芹,翁一武,等.采用涡旋膨胀机的低品位热能有机物朗肯循环发电系统实验研究[J].中国电机工程学报,2011,31(17):20—25.[12] Gu Wei, Sun Shaoqin, Weng Yiwu, et al.Experimental study on low grade heat driven organicRankine cycle[J]. Proceedings of the CSEE,2011,31(17):20—25.
[13]刘广彬,赵远扬,李连生,等.低温余热回收用涡旋膨胀机性能模拟研究[J].西安交通大学学报,2009,43(7):88—91.[13] Liu Guangbin,Zhao Yuanyang,Li Liansheng,et al.Simulation of scroll expander used in low-temperaturewaste heat recovery system[J]. Journal of Xi’anJiaotong University,2009,43(7):88—91.
[14] Lemort V,Quoilin S,Cuevas C,et al. Testing andmodeling a scroll expander integrated into an organicRankine cycle[J]. Applied Thermal Engineering,2009,29:3094—3102.
[15] Morini M,Pavan C,Pinelli M,et al. Analysis of ascroll machine for micro ORC applications by means ofa RE/CFD methodology[J]. Applied ThermalEngineering,2015,(1):132—140.
[16] Song Panpan,Wei Mingshan,Liu Zhen,et al. Effectsof suction port arrangements on a scroll expander for asmall scale ORC system based on CFD approach[J].Applied Energy,2015,50:274—285.
[17] Wu Zhu,Pan Deng,Gao Naiping,et al. Experimentaltesting and numerical simulation of scroll expander in asmall scale organic Rankine cycle system[J]. AppliedThermal Engineering,2015,87:529—537.
[2]魏莉莉,张于峰,穆永超,等.工质性质对有机朗肯循环低温发电系统影响的实验研究[J].太阳能学报,2014,35(12):2514—2518.[2] Wei Lili,Zhang Yufeng,Mu Yongchao,et al. Impact ofworking fluid on low-temperature energy conversionsystem using ORCs[J]. Acta Energiae Solaris Sinica,2014,35(12):2514—2518.
[3]高建强,孙鑫,曲振肖,等.太阳能超临界有机朗肯循环的工质选择和性能分析[J].太阳能学报,2015,36(8):2002—2007.[3] Gao Jianqiang,Sun Xin,Qu Zhenxiao,et al. Selectionof working fluid and performance analysis of solarsupercritical organic Rankine cycle[J]. Acta EnergiaeSolaris Sinica,2015,36(8):2002—2007.
[4] Hung T C. Waste heat recovery of organic Rankine cycleusing dry fluids[J]. Energy Conversion andManagement,2001,42(5):539—553.
[5]刘强,段远源,宋鸿伟.生物质直燃有机朗肯循环热电联产系统的热力性能分析[J],中国电机工程学报,2013,33(26):60—67.[5] Liu Qiang,Duan Yuanyuan,Song Hongwei. Thermalperformance analysis of a biomass-fired organic Rankinecycle[J]. Proceedings of the CSEE,2013,33(26):60—67.
[6]潘登.有机朗肯循环涡旋膨胀机性能实验研究[D].上海:同济大学,2013.[6] Pan Deng. Experimental research on the performance ofscroll expander used in ORC system[D]. Shanghai:Tongji University,2013.
[7] Huang C T,Shai T Y,Wang S K. A review of organicRankine cycles(ORCs)for the recovery of low gradewaste heat[J]. Energy,1997,22:661—667.
[8]潘登,高乃平,谢飞博,等.有机朗肯循环涡旋膨胀机性能试验研究[J].流体机械,2014,42(5):10—14.[8] Pan Deng,Gao Naiping,Xie Feibo,et al. Experimentalresearch on the performance of scroll expander used inorganic Rankine cycle[J]. Fluid Machinery,2014,42(5):10—14.
[9] Muhammad I,Muhammad U,Byung-Sik P,et al.Volumetric expanders for low grade heat and waste heatrecovery applications[J]. Renewable and SustainableEnergy Reviews,2016,57:1090—1109.
[10] Imran M, Usman M, Pard B-S, et al. Study onfundamental performance of scroll expander[J]. TheProceedings of the Japan Society of MechanicalEngineers,1988,54(506):2798—2803.
[11]郑敏之.涡卷式膨胀机的性能试验[J].压缩机技术,1991,3:1—5.[11] Zheng Minzhi. Experiment on the performance of scrollexpander[J]. Compressor Technology,1991,3:1—5.
[12]顾伟,孙绍芹,翁一武,等.采用涡旋膨胀机的低品位热能有机物朗肯循环发电系统实验研究[J].中国电机工程学报,2011,31(17):20—25.[12] Gu Wei, Sun Shaoqin, Weng Yiwu, et al.Experimental study on low grade heat driven organicRankine cycle[J]. Proceedings of the CSEE,2011,31(17):20—25.
[13]刘广彬,赵远扬,李连生,等.低温余热回收用涡旋膨胀机性能模拟研究[J].西安交通大学学报,2009,43(7):88—91.[13] Liu Guangbin,Zhao Yuanyang,Li Liansheng,et al.Simulation of scroll expander used in low-temperaturewaste heat recovery system[J]. Journal of Xi’anJiaotong University,2009,43(7):88—91.
[14] Lemort V,Quoilin S,Cuevas C,et al. Testing andmodeling a scroll expander integrated into an organicRankine cycle[J]. Applied Thermal Engineering,2009,29:3094—3102.
[15] Morini M,Pavan C,Pinelli M,et al. Analysis of ascroll machine for micro ORC applications by means ofa RE/CFD methodology[J]. Applied ThermalEngineering,2015,(1):132—140.
[16] Song Panpan,Wei Mingshan,Liu Zhen,et al. Effectsof suction port arrangements on a scroll expander for asmall scale ORC system based on CFD approach[J].Applied Energy,2015,50:274—285.
[17] Wu Zhu,Pan Deng,Gao Naiping,et al. Experimentaltesting and numerical simulation of scroll expander in asmall scale organic Rankine cycle system[J]. AppliedThermal Engineering,2015,87:529—537.