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Xiaojing Lv

Xiaojing Lv

Shanghai Jiao Tong University, China

Title: Performance analysis of an IT-SOFC/GT hybrid system using gasified biomass fuel under different operating modes

Biography

Biography: Xiaojing Lv

Abstract

This work elaborates the load performance and safe characteristic of an intermediate-temperature solid oxide fuel cell (IT-SOFC) and a gas turbine (GT) hybrid system using gasified biomass fuel under different operating modes. Three operating modes are adopted to investigate the off-design performance. And some malfunction restrictions of components (such as fuel cell thermal crack, compressor surge, reformer carbon deposition) are also considered for the effect of operating mode. Results show that the hybrid system has a high efficiency 60.78% at the design point using wood chip gas, which is an interesting reference for distributed power stations. The system output load changes almost from 46% to 120% when it is operating with Modes A and C, however, the compressor surge is occurred easily with Mode A. When with Mode B, the system has a rather wider load range than that of above two operation situations, but its performance variation is very complicated. The system performance will be affect by the too low turbine inlet temperature and carbon deposition phenomenon occurred in the reformer when in low load operation. The system can’t operate safely because the turbine is damaged easily by the too high inlet temperature when in high load operation. The results further illustrate that, the designer or the user should pay attention to the matching relationship between too much flow rate and flow characteristics for turbine and compressor, when the high load output is required

Recent Publications:

  1. Xiaojing Lv, Chenghong Gu, Xing Liu, Yiwu Weng. Effect of gasified biomass fuel on load characteristics of an intermediate-temperature solid oxide fuel cell and gas turbine hybrid system [J]. International Journal of Hydrogen Energy, 2016, 44:9563–9576.
  2. Xiaojing Lv, Xing Liu, Chenghong Gu, Yiwu Weng. Determination of safe operation zone for an intermediate temperature solid oxide fuel cell and gas turbine hybrid system [J]. Energy, 2016, 99: 91-102.
  3. Xiaojing Lv, Chaohao Lu, Yuzhang Wang, Yiwu Weng. Effect of operating parameters on a hybrid system of intermediate-temperature solid oxide fuel cell and gas turbine [J]. Energy, 2015, 91: 10-19.
  4. Xiaojing Lv, Chaohao Lu，Xinjian Zhu，Yiwu Weng. Safety Analysis of a SOFC/GT Hybrid System Fuelled with Gasified Biomass [J]. Journal of Fuel Cell Science Technology, 2015, 12:011008-1-011008-6.
  5. Xiaojing Lv, Chaohao Lu, Xinjian Zhu, Yiwu Weng. Effect of Steam on the Performance of an IT-SOFC/GT Hybrid System [C]. Proceeding of the ASME 2015 Power Conference. Power Energy2015-49076.