Optimal Design of Organic Rankine Cycle Driven by Low-Temperature Waste Heat
The exergy analysis of ORC unit driven by lowtemperature waste heat was performed and an intuitive approach with simple impressions was developed to calculate the performances the ORC unit. Parameter optimization was conducted with turbine inlet temperature simplified as the variable and exergy efficiency or power output as the objective function by means of Penalty Function and Golden Section Searching algorithm based on the formulation of the optimization problem. The power generated by the optimized ORC unit can be nearly as twice as that generated by a conventional ORC unit. In addition, cycle parametric analysis was performed to examine the effects of thermodynamic parameters on the cycle performances such as thermal efficiency and exergy efficiency. It is proven that performance of ORC unit is mainly effected by the thermodynamic property of working fluid, the waste heat temperature, the pinch point temperature of the evaporator, the specific heat capacity of the heat carrier and the turbine inlet temperature under a given environment temperature.
Waste heat recovery Organic Rankine Cycle Optimization Working fluid Exergy Pinch point
WANG Huitao WANG Hua GE Zhong
Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction, Ministry of Education Kunming University of Science and Technology, Kunming, 650093, China
国际会议
吉林
英文
1621-1626
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）