A graphical criterion for working fluid selection and thermodynamic system comparison in waste heat recovery

作者：Xi Huan; Li Ming Jia; He Ya Ling^*; Tao Wen Quan

来源：Applied Thermal Engineering, 2015, 89: 772-782.

DOI：10.1016/j.applthermaleng.2015.06.050

• Waste heat recovery (WHR)
• Organic Rankine cycle (ORC)
• Graphical criterion
• Working fluid selection
• System comparison
• Multi-objectives genetic algorithm (MOGA)

In the present study, we proposed a graphical criterion called CE diagram by achieving the Pareto optimal solutions of the annual cash flow and exergy efficiency. This new graphical criterion enables both working fluid selection and thermodynamic system comparison for waste heat recovery. It's better than the existing criterion based on single objective optimization because it is graphical and intuitionistic in the form of diagram. The features of CE diagram were illustrated by studying 5 examples with different heat-source temperatures (ranging between 100 degrees C to 260 degrees C), 26 chlorine-free working fluids and two typical ORC systems including basic organic Rankine cycle(BORC) and recuperative organic Rankine cycle (RORC). It is found that the proposed graphical criterion is feasible and can be applied to any closed loop waste heat recovery thermodynamic systems and working fluids.

• 出版日期2015-10-5
• 单位西安交通大学