THERMOECONOMIC ANALYSIS OF ORGANIC RANKINE CYCLE BASED ON DIFFERENT ECONOMIC INDICATORS
Xinxin Zhang, Xiaoyu Yang, Jingfu Wang
Session: Poster session & Welcome drinks
Session starts: Wednesday 13 September, 17:30
Xinxin Zhang (Beijing University of Technology)
Xiaoyu Yang (Beijing University of Technology)
Jingfu Wang (Beijing University of Technology)
The organic Rankine cycle(ORC) is a popular technology used in waste heat recovery and low-grade heat utilization. However, the application of ORC is subject to limitation on some occasions due to its high investment cost. In this paper, the ORC used for recovering the waste heat of flue gas was studied and cost model of ORC was established with detailed calculation. Two organic working fluids, R123 and R245fa, were selected for conducting the analysis. Five economic indicators, including average investment of the system, annual net earning, dynamic payback period, return on investment, and power generation cost, were used as the basis for analyzing the variation effect of the flue gas inlet temperature, evaporation temperature, and condensation temperature on the above five economic indicators. The study found that among all these five indicators, R245fa has four prevailing indicators while R123 has only one. Therefore, R245fa can be a good working fluid.