PERFORMANCE AND PARAMETRIC ANALYSIS ON ORGANIC RANKINE CYCLE FOR WASTE HEAT RECOVERY
The performance analysis of an organic Rankine cycle (ORC) system using different working fluid driven by waste heat is presented. The mass flow rate of waste heat is 69.5kg/s and minimum temperature difference between waste heat and working fluids is 5.5℃. The results show that as the turbine pressure increases, there is an optimal pressure where the net work and exergy efficiency of ORC system is maximal. The optimal pressure increases with normal boiling point for same kind of working fluid. Among the several researched working fluids, R236ea gives maximal exergy efficiency and net output for the same pinch point. When waste heat temperature is 150℃, the optimal pressure for R236ea is 1.3MPa and the maximum net power is 662kW. Pinch point is a dominant parameter and the net output of ORC system decreases with increasing pinch point. With the increase of waste heat temperature, the optimal turbine inlet pressure increases almost linearly. Therefore, choosing a proper working fluid, pinch point as well as appropriate turbine inlet pressure can improve the system performance effectively.
Zhiqi Wang Naijun Zhou Jing Guo Daohui Tong
School of Energy Science and Engineering tral South University Changsha, Hunan China 410083 Institut School of Energy Science and Engineering Central South University Changsha, Hunan China 410083
国际会议
The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)
北京
英文
415-420
2010-10-19（万方平台首次上网日期，不代表论文的发表时间）