%A Yinglun GUO,Fuqiang XI,Ruizhi SU,Guoxiang LI,Zeting YU %T TRCC series system based on LNG cold energy and fuel cellwaste heat utilization %0 Journal Article %D 2019 %J Journal of Shandong University(Engineering Science) %R 10.6040/j.issn.1672-3961.0.2019.154 %P 52-57 %V 49 %N 5 %U {http://gxbwk.njournal.sdu.edu.cn/CN/abstract/article_1862.shtml} %8 2019-10-20 %X

A cogeneration system based on solid oxide fuel cell (SOFC for short) and transcritical carbon dioxide cycle (TRCC for short) was proposed. The transcritial carbon dioxide cycle was used to recover the exhaust heat of the SOFC while utilizing the LNG refrigeration capacity. The mathematical model of the system was established, and the influence of parameter changes on system performance was analyzed. The results showed that under the design conditions, the thermal efficiencies of SOFC, TRCC, and the whole system were 64.2%, 22.4%, and 74.1%, respectively. The system thermal efficiency increased with the inlet temperature of the fuel cell and decreased with the increase of the steam-carbon ratio. The thermal efficiency increased as the turbine inlet pressure to the TRCC increased.