基于Huntorf CAES工厂系统热力学分析
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摘要
本文基于德国Huntorf压缩空气储能(CAES)工厂的运行参数,利用Aspen Plus软件建模对CAES系统参数进行热力学分析。从研究结果知,降低级间冷却温度可以减少压缩机组电耗,降低储气室温度可以增加储气量,提高周期内发电量。通过高压透平机进口压力的梯级利用可以提高系统的循环效率RTE,提高低压透平机入口温度可以提高压缩空气的焓值及发电能力。通过回收低压透平机排气余热预热高压透平机压缩空气入口温度可以提高储能系统RTE,与Huntorf工厂的运行数据相比,最多可节约燃料40%。
In this study, the thermodynamic characteristics of the compressed air energy storage system(CAES) are investigated based on the operation parameters of the Huntorf CAES plant with Aspen Plus. We can get know from the simulation results that power consumption of the compressor train can be reduced with lower cooling temperature between the compressors. More power is generated with the same CAES with lower temperature of the compressed air storage cavern because of more enthalpy of compressed air are storage in the cavern with low temperature. Round trip efficiency(RTE) of the system can be improved with gradient utilization of the entrance pressure of the high pressure(HP) turbine. The enthalpy of the compressed air is raised with high HP turbine entrance temperature. More power is generated with the compressed air with much more enthalpy.The RTE of the system can be improved obviously by means of recovering the waste heat from the exhaust air from the low pressure(LP) turbine to preheat the compressed air before entering the HP turbine for generating power. More than 30% of the fuel can be saved with the Huntorf plant with the same capacity if the waste heat is recovered effectively.
In this study, the thermodynamic characteristics of the compressed air energy storage system(CAES) are investigated based on the operation parameters of the Huntorf CAES plant with Aspen Plus. We can get know from the simulation results that power consumption of the compressor train can be reduced with lower cooling temperature between the compressors. More power is generated with the same CAES with lower temperature of the compressed air storage cavern because of more enthalpy of compressed air are storage in the cavern with low temperature. Round trip efficiency(RTE) of the system can be improved with gradient utilization of the entrance pressure of the high pressure(HP) turbine. The enthalpy of the compressed air is raised with high HP turbine entrance temperature. More power is generated with the compressed air with much more enthalpy.The RTE of the system can be improved obviously by means of recovering the waste heat from the exhaust air from the low pressure(LP) turbine to preheat the compressed air before entering the HP turbine for generating power. More than 30% of the fuel can be saved with the Huntorf plant with the same capacity if the waste heat is recovered effectively.
引文
[1] BARBOUR, WILSON E, RADCLIFFE I A G, et al. A Review of Pumped Hydro Energy Storage Development in Significant International Electricity Markets[J]. Renewable and Sustainable Energy Reviews, 2016,(61):421-432
[2] BARNES F S,BUDD D A, LIM M, et al. Compressed Air Energy Storage(CAES)[J]. Mechanical Storage, 2015,1(1):1-26
[3] GARVEY S D, PIMM A. Compressed Air Energy Storage[J]. Storing Energy, 2016, 1(1):1-25
[4]李小仨,钱则刚,杨启超,等.压缩空气储能技术现状分析[J].流体机械,2013, 41(8):40-44LI Xiaosan, QIAN Zegang, YANG Qichao, et al. Technique Summarize and Efficiency Analysis of Compressed Air Energy Storage[J]. Fluid Machinery, 2013, 41(8):40-44
[5]张新敬.压缩空气储能系统若干问题的研究[D].中国科学院研究生院(工程热物理研究所),2011ZHANG Xinjing. Investigation on Compressed Air Energy Storage System[D]. Graduate University of the Chinese Academy of Sciences, 2011
[6] CHEN Haisheng, CONG Thangnogic, YANG Wei, et al.Progress in Electrical Energy Storage System:A Critical Review[J]. Progress in Natural Science, 2009, 19(3):291-312
[7] GUO Chaobin, PAN Lehua, ZHANG Keni, et al. Comparison of Compressed Air Energy Storage Process in Aquifers and Caverns Based on the Huntorf CAES plant[J]. Applied Energy, 2016, 181:342-356
[8] GUO Huang, XU Yunjie, CHEN Haisheng, et al. Thermodynamic Analytical Solution and Exergy Analysis for Supercritical Compressed Air Energy Storage System[J].Applied Energy, 2017:199:96-106
[9] GUO Huan, XU Yujie, CHEN Haisheng, et al. Thermodynamic Characteristics of a Novel Supercritical Compressed Air Energy Storage System[J]. Energy Conversion and Management, 2016, 1-5:167-177
[10] JI Wei, ZHOU Yuan, SUN Yue, et al. Thermodynamie Analysis of a Novel Hybrid Wind-solar-compressed Air Energy Storage System[J]. Energy Conversion and Management, 2017, 142:176-187
[11] KANTHARAJ B, GARVEY S, PIMM A. Thermodynamic Analysis of a Hybrid Energy Storage System Based on Compressed Air and Liquid Air[J]. Sustainable Energy Technologies and Assessments, 2015, 11:159-164
[2] BARNES F S,BUDD D A, LIM M, et al. Compressed Air Energy Storage(CAES)[J]. Mechanical Storage, 2015,1(1):1-26
[3] GARVEY S D, PIMM A. Compressed Air Energy Storage[J]. Storing Energy, 2016, 1(1):1-25
[4]李小仨,钱则刚,杨启超,等.压缩空气储能技术现状分析[J].流体机械,2013, 41(8):40-44LI Xiaosan, QIAN Zegang, YANG Qichao, et al. Technique Summarize and Efficiency Analysis of Compressed Air Energy Storage[J]. Fluid Machinery, 2013, 41(8):40-44
[5]张新敬.压缩空气储能系统若干问题的研究[D].中国科学院研究生院(工程热物理研究所),2011ZHANG Xinjing. Investigation on Compressed Air Energy Storage System[D]. Graduate University of the Chinese Academy of Sciences, 2011
[6] CHEN Haisheng, CONG Thangnogic, YANG Wei, et al.Progress in Electrical Energy Storage System:A Critical Review[J]. Progress in Natural Science, 2009, 19(3):291-312
[7] GUO Chaobin, PAN Lehua, ZHANG Keni, et al. Comparison of Compressed Air Energy Storage Process in Aquifers and Caverns Based on the Huntorf CAES plant[J]. Applied Energy, 2016, 181:342-356
[8] GUO Huang, XU Yunjie, CHEN Haisheng, et al. Thermodynamic Analytical Solution and Exergy Analysis for Supercritical Compressed Air Energy Storage System[J].Applied Energy, 2017:199:96-106
[9] GUO Huan, XU Yujie, CHEN Haisheng, et al. Thermodynamic Characteristics of a Novel Supercritical Compressed Air Energy Storage System[J]. Energy Conversion and Management, 2016, 1-5:167-177
[10] JI Wei, ZHOU Yuan, SUN Yue, et al. Thermodynamie Analysis of a Novel Hybrid Wind-solar-compressed Air Energy Storage System[J]. Energy Conversion and Management, 2017, 142:176-187
[11] KANTHARAJ B, GARVEY S, PIMM A. Thermodynamic Analysis of a Hybrid Energy Storage System Based on Compressed Air and Liquid Air[J]. Sustainable Energy Technologies and Assessments, 2015, 11:159-164