太阳能有机朗肯循环系统模拟与热力学性能分析
郭俊兴¹，穆永超^1，2，张杰¹，张鹏飞¹，罗景辉^1，2
（1.河北工程大学能源与环境工程学院，河北 邯郸 056038；2.河北省暖通空调工程技术创新中心，河北 邯郸 056038）
摘要： 针对太阳能集热器出口水温为80 ～ 96 ℃的有机朗肯循环（Organic Rankine Cycle，ORC）系统，选用有机工质
BY-3，利用EES （Engineering Equation Solver，工程方程求解器）对系统进行仿真模拟，并对系统发电功率、净发电效
率、火用效率等主要热力学性能进行了研究分析。研究表明：在80 ～ 96 ℃温度范围内，系统蒸发压力、蒸发温度、蒸发器
吸热功率、系统发电功率、系统净发电效率与热源温度呈正相关；系统的火用效率随着热源温度的升高先增大后减小。当热
源温度为86 ℃时，系统的火用效率达到最大值0.314；此时，系统蒸发压力为1.06 MPa，冷凝压力为0.55 MPa；蒸发温度
为68.13  ℃，冷凝温度为42.13  ℃；蒸发器吸热功率为455 kW，系统发电功率为18.940 kW，工质泵耗电功率为1.323 kW，
系统净发电效率为0.038 7。
关键词： 有机朗肯；热力学性能；发电功率；净发电效率；火用效率
中图分类号： TK114      文献标志码： A      文章编号： 2095-0802-(2023)10-0044-04
Solar Organic Rankine Cycle System Simulation and Thermodynamic Performance
GUO Junxing¹, MU Yongchao^1,2, ZHANG Jie¹, ZHANG Pengfei¹, LUO Jinghui^1,2
(1. School of Energy and Environmental Engineering, Hebei University of Engineering, Handan 056038, Hebei, China; 2. Hebei
HVAC Technology Innovation Center, Handan 056038, Hebei, China)
Abstract: For the organic Rankine cycle (ORC) system with the outlet water temperature of 80 - 96 ℃of the solar collector, the
organic working medium BY-3 was selected to simulate the system using EES, and the main thermodynamic properties of the
system, such as power generation, net power generation efficiency, and exergy efficiency were studied and analyzed. The research
shows that in this temperature range of 80 - 96 ℃, the system evaporation pressure, evaporation temperature, evaporator heat
absorption power, system power generation, and system net power generation efficiency are positively correlated with the heat
source temperature; the exergy efficiency of the system first increases and then decreases with the increase of the heat source
temperature. When the heat source temperature is 86 ℃, the efficiency of the system reaches its maximum value of 0.314; at this
point, the evaporation pressure of the system is 1.06 MPa, and the condensation pressure is 0.55 MPa; the evaporation temperature
is 68.13 ℃, and the condensation temperature is 42.13 ℃; the heat absorption power of the evaporator is 455 kW, the power
generation power of the system is 18.940 kW, the power consumption of the working fluid pump is 1.323 kW, and the net power
generation efficiency of the system is 0.038 7.

Key words: organic Rankine; thermodynamic performance; power generation; net generation efficiency; exergy efficiency