TY - JOUR
T1 - Multi-objective optimization and grey relational analysis on configurations of organic Rankine cycle
AU - Wang, Y. Z.
AU - Zhao, J.
AU - Wang, Y.
AU - An, Q. S.
N1 - Publisher Copyright:
© 2016 Elsevier Ltd
PY - 2017/3/5
Y1 - 2017/3/5
N2 - Concerning the comprehensive performance of organic Rankine cycle (ORC), comparisons and optimizations on 3 different configurations of ORC (basic, regenerative and extractive ORCs) are investigated in this paper. Medium-temperature geothermal water is used for comparing the influence of configurations, working fluids and operating parameters on different evaluation criteria. Different evaluation and optimization methods are adopted in evaluation of ORCs to obtain the one with the best comprehensive performance, such as exergoeconomic analysis, bi-objective optimization and grey relational analysis. The results reveal that the basic ORC performs the best among these 3 ORCs in terms of comprehensive thermodynamic and economic performances when using R245fa and driven by geothermal water at 150 °C. Furthermore, R141b shows the best comprehensive performance among 14 working fluids based on the Pareto frontier solutions without considering safe factors. Meanwhile, R141b is the best among all 14 working fluids with the optimal comprehensive performance when regarding all the evaluation criteria as equal by using grey relational analysis.
AB - Concerning the comprehensive performance of organic Rankine cycle (ORC), comparisons and optimizations on 3 different configurations of ORC (basic, regenerative and extractive ORCs) are investigated in this paper. Medium-temperature geothermal water is used for comparing the influence of configurations, working fluids and operating parameters on different evaluation criteria. Different evaluation and optimization methods are adopted in evaluation of ORCs to obtain the one with the best comprehensive performance, such as exergoeconomic analysis, bi-objective optimization and grey relational analysis. The results reveal that the basic ORC performs the best among these 3 ORCs in terms of comprehensive thermodynamic and economic performances when using R245fa and driven by geothermal water at 150 °C. Furthermore, R141b shows the best comprehensive performance among 14 working fluids based on the Pareto frontier solutions without considering safe factors. Meanwhile, R141b is the best among all 14 working fluids with the optimal comprehensive performance when regarding all the evaluation criteria as equal by using grey relational analysis.
KW - Exergoeconomic analysis
KW - Geothermal resource
KW - Grey relational analysis
KW - Multi-objective optimization
KW - Organic Rankine cycle
UR - http://www.scopus.com/inward/record.url?scp=85006054892&partnerID=8YFLogxK
U2 - 10.1016/j.applthermaleng.2016.10.075
DO - 10.1016/j.applthermaleng.2016.10.075
M3 - Article
AN - SCOPUS:85006054892
SN - 1359-4311
VL - 114
SP - 1355
EP - 1363
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
ER -