工质物性变量化的梯形循环一般性热力学规律
|
摘要
基于前期研究提出的梯形循环及其理论模型,建立工质饱和线形状(饱和液线斜率、饱和气线斜率与临界温度)及物性的自变量数学关系,进而建立循环性能(净输出功、热效率等)与工质饱和线及物性的数学模型,从理论角度研究工质性质对循环性能影响的一般性热力学规律,得到循环性能分别随工质的干、湿、等熵性质和工质饱和线斜率、临界温度、雅克比数及定压比热的变化规律。
Based on the trapezoidal cycle and theoretical model established before,the relationships and mathematical formulas of the saturated line shape(saturation liquid line slope,saturated gas line slope and critical temperature)and properties of the working fluids to be as variables are built;then,the mathematical model of the cycle performances(net power output,thermal efficiency,etc.)with the saturation line and properties of the working fluid is established. The general thermodynamic principles of the working fluid properties influencing on the cycle performances was studied theoretically. The general principles of the cycle performances with the properties of working fluids including dry,wet and isentropic and the saturated line shape,critical temperature,Jakob number,specific heat,etc. are obtained,respectively.
Based on the trapezoidal cycle and theoretical model established before,the relationships and mathematical formulas of the saturated line shape(saturation liquid line slope,saturated gas line slope and critical temperature)and properties of the working fluids to be as variables are built;then,the mathematical model of the cycle performances(net power output,thermal efficiency,etc.)with the saturation line and properties of the working fluid is established. The general thermodynamic principles of the working fluid properties influencing on the cycle performances was studied theoretically. The general principles of the cycle performances with the properties of working fluids including dry,wet and isentropic and the saturated line shape,critical temperature,Jakob number,specific heat,etc. are obtained,respectively.
引文
[1]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.[1]Gao Jianqiang,Sun Xin,Qu Zhenxiao,et al.Selection of working fluid and performance analysis of solar supercritical organic Rankine cycle[J].Acta Energiac Solaris Sinica,2015,36(8):2002-2007.
[2]倪渊,赵良举,刘朝,等.非共沸混合工质ORC对低焓地热能的深度利用[J].太阳能学报,2014,35(9):1670-1676.[2]Ni Yuan,Zhao Liangju,Liu Chao,et al.Deeply recovery of low-enthalpy geothermal resources by organic Rankine cycles with non-azeotropic mixtures[J].Acta Energiac Solaris Sinica,2014,35(9):1670-1676.
[3]严雨林,王怀信,郭涛.中低温地热发电有机朗肯循环系统性能的实验研究[J].太阳能学报,2013,34(8):1360-1365.[3]Yan Yulin,Wang Huaixin,Guo Tao.Experimental study of performance of organic Rankine cycle system for low/moderate temperature geothermal power generation[J].Acta Energiac Solaris Sinica,2013,34(8):1360-1365.
[4]张红光,贝晨,杨富斌,等.ORC系统蒸发器性能分析及其对柴油机性能影响[J].太阳能学报,2016,37(2):462-468.[4]Zhang Hongguang,Bei Chen,Yang Fubin,et al.Performance analysis and influence of evaporator on diesel engine characteristics used in organic Rankine cycle(ORC)system[J].Acta Energiac Solaris Sinica,2016,37(2):462-468.
[5]严家禄.低温热能发电方案中选择工质和确定参数的热力学原则和计算[J].工程热物理学报,1982,3(1):1-7.[5]Yan Jialu.Thermodynamic principles and formulas for choosing working fluids and parameters in designing power plant of low temperature heat[J].Journal of Engineering Thermophysics,1982,3(1):1-7.
[6]王辉涛,王华,龙恩深,等.低温废气余热驱动有机朗肯循环的优化[J].太阳能学报,2013,34(7):1183-1189.[6]Wang Huitao,Wang Hua,Long Enshen,et al.Parameter optimization of the low-temperature exhaust gas waste heat powered organic Rankine cycle[J].Acta Energiac Solaris Sinica,2013,34(7):1183-1189.
[7]He Chao,Liu Chao,Gao Hong,et al.The optimal evaporation temperature and working fluids for subcritical organic Rankine cycle[J].Energy,2012,38(1):136-143.
[8]He Chao,Liu Chao,Zhou Mengtong,et al.A new selection principle of working fluids for subcritical organic Rankine cycle coupling with different heat sources[J].Energy,2014,68(15):283-291.
[9]Wang Dongxiang,Ling Xiang,Peng Hao.Costeffectiveness performance analysis of organic Rankine cycle for low grade heat utilization coupling with operation condition[J].Applied Thermal Engineering,2013,58(1-2):571-584.
[10]Wang Dongxiang,Ling Xiang,Peng Hao,et al.Efficiency and optimal performance evaluation of organic Rankine cycle for low grade waste heat power generation[J].Energy,2013,50(1):343-352.
[11]Chen H,Goswami D Y,Stefanakos E K.A review of thermodynamic cycles and working fluids for the conversion of low-grade heat[J].Renewable&Sustainable Energy Reviews,2010,14(9):3059-3067.
[12]Maizza V,Maizza A.Working fluids in non-steady flows for waste energy recovery systems[J].Applied Thermal Engineering,1996,16:579-590.
[13]Yamamoto T,Furuhata T,Arai N,et al.Design and testing of the organic Rankine cycle[J].Energy,2001,26(3):239-251.
[14]Liu Botau,Chien Kuohsiang,Wang Chichuan.Effect of working fluids on organic Rankine cycle for waste heat recovery[J].Energy,2004,29(8):1207-1217.
[15]Li Xinguo.A trapezoidal cycle with theoretical model based on organic Rankine cycle[J].International Journal of Energy Research,2016,40(12):1624-1637.
[16]李新国,翟哲.梯形循环及模拟有机朗肯循环的理论研究[J].太阳能学报,2018,39(10):2737-2744.[16]Li Xinguo,Zhai Zhe.Trapezoidal cycle and theoretical study to simulate the organic rankine cycle[J].Acta Energiac Solaris Sinica,2018,39(10):2737-2744.
[17]H?rvig J,S?rensen K,Condra T J.Guidelines for optimal selection of working fluid for an organic Rankine cycle in relation to waste heat recovery[J].Energy,2016,96:592-602.
[2]倪渊,赵良举,刘朝,等.非共沸混合工质ORC对低焓地热能的深度利用[J].太阳能学报,2014,35(9):1670-1676.[2]Ni Yuan,Zhao Liangju,Liu Chao,et al.Deeply recovery of low-enthalpy geothermal resources by organic Rankine cycles with non-azeotropic mixtures[J].Acta Energiac Solaris Sinica,2014,35(9):1670-1676.
[3]严雨林,王怀信,郭涛.中低温地热发电有机朗肯循环系统性能的实验研究[J].太阳能学报,2013,34(8):1360-1365.[3]Yan Yulin,Wang Huaixin,Guo Tao.Experimental study of performance of organic Rankine cycle system for low/moderate temperature geothermal power generation[J].Acta Energiac Solaris Sinica,2013,34(8):1360-1365.
[4]张红光,贝晨,杨富斌,等.ORC系统蒸发器性能分析及其对柴油机性能影响[J].太阳能学报,2016,37(2):462-468.[4]Zhang Hongguang,Bei Chen,Yang Fubin,et al.Performance analysis and influence of evaporator on diesel engine characteristics used in organic Rankine cycle(ORC)system[J].Acta Energiac Solaris Sinica,2016,37(2):462-468.
[5]严家禄.低温热能发电方案中选择工质和确定参数的热力学原则和计算[J].工程热物理学报,1982,3(1):1-7.[5]Yan Jialu.Thermodynamic principles and formulas for choosing working fluids and parameters in designing power plant of low temperature heat[J].Journal of Engineering Thermophysics,1982,3(1):1-7.
[6]王辉涛,王华,龙恩深,等.低温废气余热驱动有机朗肯循环的优化[J].太阳能学报,2013,34(7):1183-1189.[6]Wang Huitao,Wang Hua,Long Enshen,et al.Parameter optimization of the low-temperature exhaust gas waste heat powered organic Rankine cycle[J].Acta Energiac Solaris Sinica,2013,34(7):1183-1189.
[7]He Chao,Liu Chao,Gao Hong,et al.The optimal evaporation temperature and working fluids for subcritical organic Rankine cycle[J].Energy,2012,38(1):136-143.
[8]He Chao,Liu Chao,Zhou Mengtong,et al.A new selection principle of working fluids for subcritical organic Rankine cycle coupling with different heat sources[J].Energy,2014,68(15):283-291.
[9]Wang Dongxiang,Ling Xiang,Peng Hao.Costeffectiveness performance analysis of organic Rankine cycle for low grade heat utilization coupling with operation condition[J].Applied Thermal Engineering,2013,58(1-2):571-584.
[10]Wang Dongxiang,Ling Xiang,Peng Hao,et al.Efficiency and optimal performance evaluation of organic Rankine cycle for low grade waste heat power generation[J].Energy,2013,50(1):343-352.
[11]Chen H,Goswami D Y,Stefanakos E K.A review of thermodynamic cycles and working fluids for the conversion of low-grade heat[J].Renewable&Sustainable Energy Reviews,2010,14(9):3059-3067.
[12]Maizza V,Maizza A.Working fluids in non-steady flows for waste energy recovery systems[J].Applied Thermal Engineering,1996,16:579-590.
[13]Yamamoto T,Furuhata T,Arai N,et al.Design and testing of the organic Rankine cycle[J].Energy,2001,26(3):239-251.
[14]Liu Botau,Chien Kuohsiang,Wang Chichuan.Effect of working fluids on organic Rankine cycle for waste heat recovery[J].Energy,2004,29(8):1207-1217.
[15]Li Xinguo.A trapezoidal cycle with theoretical model based on organic Rankine cycle[J].International Journal of Energy Research,2016,40(12):1624-1637.
[16]李新国,翟哲.梯形循环及模拟有机朗肯循环的理论研究[J].太阳能学报,2018,39(10):2737-2744.[16]Li Xinguo,Zhai Zhe.Trapezoidal cycle and theoretical study to simulate the organic rankine cycle[J].Acta Energiac Solaris Sinica,2018,39(10):2737-2744.
[17]H?rvig J,S?rensen K,Condra T J.Guidelines for optimal selection of working fluid for an organic Rankine cycle in relation to waste heat recovery[J].Energy,2016,96:592-602.