太阳能与地热能耦合发电系统性能研究  

THEMODYNAMICS ANALYSIS OF A HYBRID SOLAR-GEOTHERMAL POWER GENERATION SYSTEM

作　　者：李君[1] 朱家玲[1] 崔志伟[1] 李金永[2] Li Jun;Zhu Jialing;Cui Zhiwei;Li Jinyong(Key Laboratory of Efficient Utilization of Low and Medium Grade Energy,MOE,Tianjin University,Tianjin300350,China;Third Oil Production Plant of North China Oilfield,Cangzhou062450,China)

机构地区：[1]天津大学中低温热能高效利用教育部重点实验室,天津300350 [2]华北油田第三采油厂,沧州062450

出　　处：《太阳能学报》2018年第11期2997-3004,共8页Acta Energiae Solaris Sinica

基　　金：天津市应用基础与前沿技术研究计划(重点项目)(15JCZDJC32000)

摘　　要：建立一种太阳能-地热能耦合ORC(organic Rankine cycle)电站模型,通过Matlab对系统热力学性能进行仿真计算,在拉萨地区太阳能辐射强度和环境温度条件下,逐时计算单独地热电站和太阳能-地热能耦合电站的净输出功和热效率。夏至、冬至日的逐时计算结果表明,耦合电站比单独空气冷却地热ORC电站的性能更优,可弥补白昼环境温度升高的不利影响;耦合电站的净输入功和热效率随太阳集热器聚光器面积的增大而增大。夏季环境温度较高,加入太阳能对电站热力性能的改善比冬季更为明显。A model of hybrid solar-geothermal ORC power generator is developed.The thermodynamics property is simulated by calculating the net power output and the thermal efficiency of the standalone geothermal and the solargeothermal hybrid power plant,respectively,under under the solar irradiance and environment temperature condition of Lhasa by Matlab.The calculation results on summer and winter solstices hour by hour indicate that hybrid system achieves higher optimal net power output and thermal efficiency than the standalone geothermal station and offsets the disadvantages resulted by the temperature increase during the daytime.The net power output and the thermal efficiency of the hybrid system increase as the area of the solar collector increases.The thermodynamics property of the power plant is improved more prominently in summer than in winter by adding solar energy,owing to the high environment temperature.

关 键 词：太阳能 地热能 仿真模拟 朗肯循环 多热源耦合 

分 类 号：TK523[动力工程及工程热物理—热能工程]